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Wacker Neuson WL 50 Operator's Manual

Manual is about: Wheel loader

Summary of WL 50

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    Operator’s manual wheel loader wl 50 www.Wackerneuson.Com.

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    December 08 edition.

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    You have opted for a wacker neuson loader – thank you very much for putting your trust in us. Your wacker neuson loader is a powerful product with robust technology and a wide range of applications to aid you in your day-to-day work. In order to familiarize yourself with your loader in a quick, comp...

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    Contents 2 table of contents preface ............................................................................................................................................................... 7 1 basic information ....................................................................................

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    Contents 3 w l 50 2.6 final decommissioning / dismantling .................................................................................................... 28 2.7 safety labels used ......................................................................................................................

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    Contents 4 5.1 before starting up ................................................................................................................................. 58 5.1.1 fueling ..........................................................................................................................

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    Contents 5 w l 50 5.4.8 precaution measures for various temperature conditions ...................................................................116 5.5 optional equipment ..............................................................................................................................1...

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    Contents 6 10.7.6 servicing the hydraulic system ........................................................................................................... 188 10.7.7 servicing the axles....................................................................................................................

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    Pr e face 7 w l 50 preface this operator’s manual describes how to operate and service the loader. It provides operating and maintenance personnel with the necessary knowledge of the loader‘s functional characteristics in order to allow them to operate, diagnose, maintain and repair the loader safel...

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    Basic infor m ation 8 each new user must be instructed before using the loader for the first time. Instructions for using the operator’s manual: read the operator’s manual carefully before starting • up the loader observe all the safety instructions • follow the regulations and laws applicable at th...

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    Basic infor m ation 9 w l 50 notes about this operator’s manual 1.1 the specifications, illustrations, weight information and technical data are not binding and correspond to the state of the art at the time of printing. We must reserve the right to make changes without prior notice in the area of d...

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    Basic infor m ation 10 explanation of the symbols used in this operator’s manual 1.2 to ensure safe operation and maintenance of the wheel loader, it is necessary that you follow all the instructions in this operator’s manual. The following symbols and the signal words danger, warning, caution, noti...

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    Basic infor m ation 11 w l 50 warranty and liability 1.3 observe the following points: do not make any changes to the wheel loader. • use only wacker neuson- approved attachments for • your loader. The loader many only be started up, operated and ser- • viced as described in the operator’s manual. U...

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    Basic infor m ation 12 the loader is used to dislodge and load material by moving the loader forward, taking into account the safety instructions / regulations and time periods listed by wacker neuson in the operator’s manual. One work cycle consists of picking up, lifting, transporting and unloadin...

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    Basic infor m ation 13 w l 50 the wheel loader shall not be employed for any of the fol- lowing work activities: lifting or transporting people • using it as a working platform • using it to lift or transport loads without providing work • equipment for it pulling trailer loads • operating after the...

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    Basic sa fet y instruc tions 14 basic safety instructions 2 use the loader and attachments only as intended and • in serviceable condition. Observe the operating instructions described in this • operator’s manual and all applicable work site safety regulations. Observe the permissible payloads. • wh...

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    Basic sa fet y instruc tions 15 w l 50 organizational measures 2.1 the following safety instructions are directed at the operator / user of the loader. Always keep the operator’s manual in the compartment • provided for it. As a supplement to the operator’s manual, universally • valid legal and othe...

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    Basic sa fet y instruc tions 16 if worn or damaged parts need replacement, use only • wacker neuson replacement parts to ensure optimum performance and safety. Inspect hydraulic hoses and fittings prior to the start of • each work shift. Correct any observed leaks or abrasion issues before operating...

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    Basic sa fet y instruc tions 17 w l 50 selection and qualification of personnel / basic duties 2.2 personnel being trained, educated, instructed or partici- • pating in a general training program may only work on or with the machine under constant supervision of an experienced, authorized supervisor...

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    Basic sa fet y instruc tions 18 safety instructions for certain operating phases 2.3 if the wheel loader does not respond as expected to the • operator command or exhibits a malfunction, stop the machine, contact the supervisor and restore the machine to serviceable condition before resuming operati...

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    Basic sa fet y instruc tions 19 w l 50 when driving on public roads, lanes and squares, ob- • serve the valid road traffic regulations and put the loader into a condition permissible for the road beforehand. As a matter of principle, turn on the lights when trav- • eling on public roads to increase ...

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    Basic sa fet y instruc tions 20 safety instructions for other operating modes 2.3.2 these safety instructions refer to special tasks relating to the use of the loader and servicing tasks - as well as emergency maintenance during operation or work concerning disposal of the auxiliary and operating ma...

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    Basic sa fet y instruc tions 21 w l 50 use lifting devices to raise and support parts and as- • semblies exceeding 10 kg (22 lbs) weight during repair and replacement activity. Use only osha approved devices to perform the lifting operation and verify that the lifting devices are in serviceable cond...

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    Basic sa fet y instruc tions 22 should it be necessary to remove safety devices during • setup, servicing or repairs, reinstall and check the safety devices immediately after finishing the work and verify that the devices perform correctly. Replace the rops (roll over protective structure) or • fops...

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    Basic sa fet y instruc tions 23 w l 50 safety instructions for particular hazards 2.4 forklift attachment 2.4.1 warning personal injury hazard. Falling objects can strike the operator. Do not transport large bales or packaged goods ► without a fops (operator canopy or cabin). Ensure that large loads...

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    Basic sa fet y instruc tions 24 warning electric shock hazard. The operator of the wheel loader can be killed if the wheel loader comes in contact with electrical wires. Keep the loader and attachment tools at a suf- ► ficient distance from overhead power lines and other electrical lines of more tha...

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    Basic sa fet y instruc tions 25 w l 50 electrical power 2.4.3 regularly check the loader‘s electrical equipment. De- • fects, such as loose plug connections or cables with burnt insulation, shall be replaced before resuming op- eration. If an electrical malfunction is discovered, stop the wheel • lo...

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    Basic sa fet y instruc tions 26 gas, dust, steam, smoke 2.4.5 diesel engine exhaust emissions are toxic in concen- • trated amounts. Do not operate the wheel loader in en- closed spaces or inadequately ventilated spaces. Determine and follow regulations regarding safe opera- • tion at the specific w...

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    Basic sa fet y instruc tions 27 w l 50 notice use the appropriate fuel for climate temperature ranges to avoid engine stoppage from fuel gell- ing. Noise 2.4.8 all the loader‘s sound-proofing devices must be in their • protection position during operation. If necessary, the operator must wear person...

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    Basic sa fet y instruc tions 28 transporting and towing / restarting 2.5 instructions are provided in this operator’s manual for • towing, loading and transporting the wheel loader safely without machine damage. The towing machine shall be capable of towing the wheel • loader. The loading and transp...

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    Basic sa fet y instruc tions 29 w l 50 safety labels used 2.7 maintain all safety message labels on the machine in a legible manner. If a safety label becomes dam- aged or illegible, replace it with a new label avail- able from your wacker neuson dealer or at www. Wackerneuson.Com. Fig. 3 location o...

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    Basic sa fet y instruc tions 30 safety label 3 warning personal injury hazard from falling equipment. Never stand in the unsecured danger area. Use the safety supports. Safety label 1 warning do not stand near the loader during operation. Do not go under the loader lift arms when raised. Safety labe...

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    Basic sa fet y instruc tions 31 w l 50 safety label 5 important remove the starting key and read the repair manual before proceeding with any work activity on the wheel loader. Safety label 6 important lubricate the center joint daily before beginning work. Refer to your opera- tor’s manual for more...

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    Basic sa fet y instruc tions 32 safety label 12 warning personal injury hazard. The wheel loader can injure people on the work site who are in the danger zone. Keep personnel away from the wheel loader during operation! Safety label 11 warning pinching/crushing hazard. Avoid the ar- ticulation area ...

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    Basic sa fet y instruc tions 33 w l 50 safety label 14 warning safety label 13 warning 15 psi 1 bar if the rops / fops protective structures are damaged, they can not serve their protective function. Never drill or weld the rops / fops protective structures. Refer to operator’s manual. Hot liquids o...

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    Basic sa fet y instruc tions 34 safety devices 2.8 fire extinguisher 2.8.1 a fire extinguisher can be installed to operator cab rail to the right of the operator ‘s seat. (fig. 4). Rotating beacon 2.8.2 (optional equipment) fig. 5 attaching the rotat- ing beacon the receptacle for the rotating beaco...

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    Basic sa fet y instruc tions 35 w l 50 seat belt 2.8.3 before starting the engine: adjust the seat to provide comfortable access • to all control ranges. Examine the seat belt webbing for any mechani- • cal or chemical damage and replace if neces- sary. Inspect all seat belt hardware for functional-...

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    Basic sa fet y instruc tions 36 emergency exit 2.8.4 fig. 7 emergency exit the cab door on the left side of the machine fac- ing the forward direction of travel is the primary access system to the operator station. The right hand access is a secondary opening intended for emergency use only. Backup ...

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    Basic sa fet y instruc tions 37 w l 50 battery disconnect switch 2.8.6 disconnect the battery from the electrical system by rotating the key counter-clockwise. In an emergency, the discon- nect switch can be used to disconnect the battery from the electrical system. Disconnecting the battery from th...

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    Basic sa fet y instruc tions 38 loader lift arm locking system 2.8.7 activate the loader lift arms locking system by switching the rocker switch (fig. 9). Switch the rocker switch (fig. 9) to position 1: • the locking system is switched on. – switch the rocker switch (fig. 9) to position 0: • the lo...

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    Technical data 39 w l 50 technical data 3 technical description 3.1 the loader consists of the vehicle frame, the drive and the axles. The vehicle frame contains all the drive and control units for the standard configuration. The vehicle frame con- sists of the front carriage with the loader lift ar...

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    Technical data 40 hydraulics the loader has two hydraulic systems supplied by a hy- draulic fluid reservoir: - hydrostatic drive - steering and working hydraulics the hydrostatic drive consists of an axial piston variable displacement pump, which drives an axial piston motor. The axial piston variab...

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    Technical data 41 w l 50 electrical system the electrical system operates at 12 volts and the electrical circuits are protected by fuses to prevent overload damage to the system and its components. Equipment the loading equipment consists of the loader lift arms with an integrated mechanical or hydr...

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    Technical data 42 weight specifications operating weight 4835 kg 10659 lb permissible total weight 5680 kg 12522 lb permissible axle load per axle 4260 kg 9391 lb permissible payload with shovel 1263 kg 2784 lb permissible payload with pallet fork 1270 kg 2800 lb hydraulics driving hydraulics flow r...

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    Technical data 43 w l 50 product identification number plates 3.3 a product identification number plate is attached to the loader on the right side of the front carriage (fig. 10). It lists the following information: manufacturer • year built • vehicle id • type • engine power • axle loads • operati...

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    Technical data 44 dimensions 3.4 dimensions fig. 11.

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    Technical data 45 w l 50 *in the event of deviating tires or reversed wheel rims the dimensions will change dimensions with 405/70 r18 em tires item designation value a overall length with standard shovel 5417 mm 213.3 inch a‘ overall length without shovel 4545 mm 178.9 inch b axle center to shovel ...

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    Description of the indicator, warning and control elements 46 description of the indicator, warning and control elements 4 operating elements and instruments 4.1 fig. 12 operating elements 2 3 4 5 6 7 8 10 11 1 9.

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    Description of the indicator, warning and control elements 47 w l 50 item designation 1 steering wheel turning knob 2 instrument panel 3 steering wheel 4 accelerator 5 operating lever for load arm / drive 6 operating lever for optional hydraulics 7 operating lever for parking brake 8 operator’s seat...

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    Description of the indicator, warning and control elements 48 control and warning lights fig. 13 1 3 2 1 0 control and warning indicator lights 4.2 if the indicator lights do not illuminate properly • at the starting sequence, repair the malfunction before operating the machine. If an indicator ligh...

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    Description of the indicator, warning and control elements 49 w l 50 item designation function symbol 1 heater indicator light illuminates during preheating 2 indicator light for electrical connection on loader lift arms (optional equipment) illuminates when electrical connection is switched on. 3 w...

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    Description of the indicator, warning and control elements 50 if the indicator lights do not illuminate properly • at the starting sequence, repair the malfunction before operating the machine. If an indicator light illuminates during operation, • move the machine to a safe place, lower the loader a...

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    Description of the indicator, warning and control elements 51 w l 50 item designation function symbol 9 indicator light for main beam illuminates when the main beam is switched on * 10 warning light for engine oil pressure illuminates when engine oil pressure is too low 11 indicator light for parkin...

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    Description of the indicator, warning and control elements 52 indicator devices 4.3 item designation function 1 engine tem- perature shows the diesel engine‘s temperature 2 tachometer shows the diesel engine‘s rpm 3 hour meter adds up the loader‘s operating time. Plan your service work and inspectio...

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    Description of the indicator, warning and control elements 53 w l 50 switches / rotary switches 4.4 item designation function 1 combination switch switches lighting and signal horn on/off 2 rotary switch, tem- perature control to adjust the temperature of the heater fan 3 rotary switch, heater fan c...

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    Description of the indicator, warning and control elements 54 rocker switches 4.5 1 3 2 1 0 fig. 16 rocker switches 1 1 2 3 4 5 6 7 8 9 10 fig. 17 rocker switches 2.

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    Description of the indicator, warning and control elements 55 w l 50 item designation function symbol 1 no function available for optional equipment 2 rocker switch for hazard warning lights switches hazard warning lights on/off 3 rocker switch, air conditioning system switches the air conditioning ...

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    Description of the indicator, warning and control elements 56 rocker switches 11 12 13 14 15 16 fig. 18 rocker switches 3.

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    Description of the indicator, warning and control elements 57 w l 50 item designation function symbol 11 rocker switch for front headlights switches front headlights on/off 12 rocker switch for rear headlights switches rear headlights on/off 13 rocker switch, rear-window wiper / back washer system (...

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    Ope r ating a nd ope r ation 58 operating and operation 5 before starting up 5.1 fueling 5.1.1 only operate the loader from the operator’s • seat. Observe osha safety regulations. • arrange for training with an experienced opera- • tor. Practice operating the wheel loader in a remote flat area to be...

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    Ope r ating a nd ope r ation 59 w l 50 the diesel reservoir is located on the left side of the rear of the loader. Access the reservoir‘s filler neck by opening the engine enclosure (fig. 19). Unscrew the cap from the filler neck. • fuel the loader‘s reservoir through the filler neck. • carefully re...

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    Ope r ating a nd ope r ation 60 before entering the cab check that the loader is clean and undamaged. • check that the handles and steps are in good condition • and clean. Check that the cab windows are in good condition and • clean. Check that all safety components are present and fully • functiona...

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    Ope r ating a nd ope r ation 61 w l 50 check: engine oil level • hydraulic fluid level • coolant level • fuel level • check the condition of the tires, looking for abrasion, • cuts or wear. Check the tire pressure! Ensure that the tires are inflated to the proper pressure (see tire pres- sure table)...

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    Ope r ating a nd ope r ation 62 doors and windows 5.1.3 the cab has one door on the left and one on the right. The right-hand door is intended for use as an emergency exit. Open the cab door from the outside by pulling the door • opener (fig. 20/1). Open the door from the inside by pulling the unloc...

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    Ope r ating a nd ope r ation 63 w l 50 the side windows can be opened and locked in this po- sition. Open and close the side windows using the lever (fig. 21). Arrest the side window by locking it in the holder (fig. • 22). Activate lever item 1 to release the window arrest (fig. • 22). Fig. 21 wind...

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    Ope r ating a nd ope r ation 64 the doors can also be opened together with the side window and locked in this position. Arrest the door by locking it in the holder (fig. 23). • activate lever item 1 to release the door arrest (fig. • 24). Fig. 23 door arrest 1 fig. 24 release door arrest.

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    Ope r ating a nd ope r ation 65 w l 50 adjusting the operator’s seat 5.1.4 you can adjust the operator’s seat to fit your height and posture. This keeps your muscles relaxed and prevents you from tiring while working. Adjust the seat so that you can comfortably reach the levers and pedals with your ...

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    Ope r ating a nd ope r ation 66 fig. 26 adjusting the opera- tor’s seat 1 5 6 3 high middle low 2 4 height adjustment: 1. The seat height can be adjusted to three different positions. Lift the seat out of its lowest position until it engages in the middle position. Lift the seat further in order to ...

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    Ope r ating a nd ope r ation 67 w l 50 lengthwise adjustment of the seat separately 3. From the steering console: adjust the seat in the lengthwise direction by pushing the locking lever upwards. After the adjustment, the locking lever must click into place in the desired position. The op- erator’s ...

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    Ope r ating a nd ope r ation 68 adjusting the steering column 5.1.5 you can adjust the position of the steering column lengthwise so that it fits your height and posture. Operate the adjustment lever (fig. 27). 1. Adjust the steering column as needed. 2. Let go of the adjustment lever. 3. Warning pe...

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    Ope r ating a nd ope r ation 69 w l 50 seat belt 5.1.6 warning personal injury hazard. Not wearing the seat belt, or operating with a dam- aged seat belt, can result in injury to the opera- tor. Make sure seat belt and buckle stay clean. ► before operation check function of seat belt ► and buckle. R...

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    Ope r ating a nd ope r ation 70 buckling the seat belt sit back in the operator seat, so that your entire back is 1. Touching the seat. Place the seat belt over your lap. 2. Seat belt must not be twisted. 3. Insert the seat belt tab item 1 into the opening in belt 4. Buckle item 3 until it clicks. I...

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    Ope r ating a nd ope r ation 71 w l 50 warning personal injury or property damage hazard. Adjusting the seat belt while the wheel loader is in operation can cause inadvertent control move- ments. Do not adjust the seat belt while the wheel ► loader is in operation. Stop the machine first and then ad...

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    Ope r ating a nd ope r ation 72 starting up 5.2 warning possibility of injury or equipment damage from in- operable lights or individual functions. Do not drive the loader if the entire lighting sys- ► tem or individual functions are not working. The warning and indicator lights display fault mes- s...

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    Ope r ating a nd ope r ation 73 w l 50 switch the lighting, turn signal and forward warning device functions on and off with the lever (fig. 30/2). Push the lever away from the operator: 1. The right turn signal is activated. – pull the lever towards the operator: 2. The left turn signal is activate...

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    Ope r ating a nd ope r ation 74 wipers and windshield washer system 5.2.2 switch the front windshield wiper and windshield washer system on/off with the lever item 1 (fig. 31) to the left of the steering wheel. Twist the rotary switch to position 1: • the windshield wiper switches on in level 1. – t...

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    Ope r ating a nd ope r ation 75 w l 50 switch the rear windshield wiper and windshield washer system on/off with the rocker switch item 13 (fig. 31). Move the switch item 13 into position 1: • the rear windshield wiper switches on. – with your finger, move the interlock item a in the switch • item 1...

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    Ope r ating a nd ope r ation 76 headlights and rotating beacon 5.2.3 the loader is equipped with headlights and taillights. Warning personal injury or property damage hazard. Work- ing and driving lights can blind passing motorists. Do not drive on public roads with working lights ► illuminated. Con...

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    Ope r ating a nd ope r ation 77 w l 50 the rotating beacon use the yellow rotating beacon according to local regulations. (optional equipment) if you want to use a rotating beacon, mount it on the fastener provided (fig. 5). The switch for operating the rotating beacon is located in the cab above th...

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    Ope r ating a nd ope r ation 78 ventilation and heating of the cab 5.2.4 ventilation ventilate the cab by means of the fan with the heating switched off, or by means of the doors and windows. The doors and windows must be locked in open condition (fig. 22 and 23): heating temperature use the left re...

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    Ope r ating a nd ope r ation 79 w l 50 ventilation outlets you can use the outlets (fig. 35) to control air flow into cab. In cold weather, warm air supply keeps the windows free of ice and heats the cab in the process. Fig. 35 ventilation outlets air conditioning system the air conditioning system ...

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    Ope r ating a nd ope r ation 80 perform the 1. »before entering the cab« checks prior to starting the engine (see the chapter »operation«). Adjust the operator’s seat and the steering column as 2. Needed. Adjust the rear view mirror / exterior mirror. 3. Put on your 4. Seat belt. Before starting the...

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    Ope r ating a nd ope r ation 81 w l 50 starting the engine 5.2.6 check that no one is in the loader‘s danger • area. Do not use ether as a starting aid. • do not use the loader if the »starter inhibitor« • does not function. Only start the loader from the operator’s seat. • due to the high viscosity...

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    Ope r ating a nd ope r ation 82 push the foot accelerator. 1. Starting: 2. Put in the key - level 0 = no operating voltage. • turn the key to the right - level i = operating voltage; • the indicator lights (oil pressure, alternator) must be illuminated turn the key to the right against spring pressu...

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    Ope r ating a nd ope r ation 83 w l 50 if the engine does not start attempt to start the loader for a maximum of 20 sec- • onds. Wait one minute. • repeat the starting process. • if the engine will not start after two attempts, look for • the cause in the malfunction table (»troubleshooting and emer...

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    Ope r ating a nd ope r ation 84 propulsion operation 5.3 description of the propulsion hydraulics see »hydraulics« section of 3.1 technical description on page 40. Preparation for travel in public traffic 5.3.1 secure the attachment: 1. Ensure that the bucket has been emptied and has been – lowered ...

  • Page 87

    Ope r ating a nd ope r ation 85 w l 50 travel speed 5.3.2 warning personal injury hazard from tipping or roll-over incidents. To avoid tipping and roll-over incidents: keep the loader lift arms and bucket load as ► low as practical keep the loading site level. ► match the speed to working conditions...

  • Page 88

    Ope r ating a nd ope r ation 86 changing travel directions use the slide switch item 1 (fig. 38) to change the loader‘s travel direction. After the engine has been started, the gear changer is in neutral position. Travel direction switch in middle position: • gear changer in neutral – push the trave...

  • Page 89

    Ope r ating a nd ope r ation 87 w l 50 changing speeds the loader has an overdrive and a crawler gear. Use the button item 2 (fig. 38) to shift the loader‘s gears. After start- ing the engine, overdrive is automatically activated. Press the button: • the loader shifts from overdrive to crawler gear....

  • Page 90

    Ope r ating a nd ope r ation 88 braking and stopping to change the traveling speed independently of the en- gine speed, you can push the braking-inching pedal on the operator’s platform next to the steering column. The first part of the pedal‘s path adjusts the travel back down, then the brake syste...

  • Page 91

    Ope r ating a nd ope r ation 89 w l 50 changing the travel direction stopping and parking 5.3.3 reduce the travel speed until the loader has come to 1. A halt. Move the travel direction switch in the other direction. 2. Push the accelerator so that the loader starts moving. 3. Stop the machine in a ...

  • Page 92

    Ope r ating a nd ope r ation 90 work operation 5.4 before starting to work with the loader: survey the work area to determine if people, • vehicles and obstacles are in the immediate work area. Do not start work until the work area is clear. Constantly survey the area during working op- • eration to...

  • Page 93

    Ope r ating a nd ope r ation 91 w l 50 each time before starting work examine the loader for visible defects prior to each work • shift. Check the functioning of the operating equipment. • check the functioning of the brakes and warning de- • vices. Report any defects to the supervisor and, when cha...

  • Page 94

    Ope r ating a nd ope r ation 92 operating lever for loader lift arms 5.4.1 use the multi-function lever to control the movements of the loader lift arms item a (fig. 39). The multi-function lever is located on the right next to the operator’s seat. Keep the loader lift arms and attachment as low • a...

  • Page 95

    Ope r ating a nd ope r ation 93 w l 50 float position ( ) press the multi-function lever item a (fig. 39) forward • across the resistance until it engages: the float position engages. – pull back the multi-function lever item a across the re- • sistance: the float position disengages. – loader lift ...

  • Page 96

    Ope r ating a nd ope r ation 94 before traveling from worksite to worksite over • extended distances, engage the loader lift arm lock after selecting the height for the travel arms for the travel segment. Do not release the loader lift arm lock until start- • ing the work cycle, or after parking the...

  • Page 97

    Ope r ating a nd ope r ation 95 w l 50 you can activate the loader lift arms hydraulic connections (fig.43) using the control lever for the optional hydraulics item z (fig.41). You can also activate the hydraulic locking mechanism of the quick-change system for the attachments with the control lever...

  • Page 98

    Ope r ating a nd ope r ation 96 if the valve lever is set at »hydraulic locking mechanism«, you can actuate the hydraulic locking mechanism via the control lever for the optional hydraulics item z (fig. 41): move the control lever for the optional hydraulics back- • wards (l): the tool attachment is...

  • Page 99

    Ope r ating a nd ope r ation 97 w l 50 detent mechanism for the optional hydraulics this function allows you to operate the optional hydraulic connections in continuous use. This function is necessary for certain attachments powered by a hydraulic motor that necessitates continuous use (e.G. Broom)....

  • Page 100

    Ope r ating a nd ope r ation 98 activating the optional hydraulics using the button you can activate the hydraulic connections on the loader lift arms (fig. 43) using the buttons for the optional hydraulics item 1 and item 2 (fig. 44). You can also activate the hydraulic locking mechanism of the qui...

  • Page 101

    Ope r ating a nd ope r ation 99 w l 50 12v 1 2 fig. 44 button for optional hydraulics 1 2 depressurized return line for some attachments, a depressurized return line is re- quired. The connection for the depressurized return line is located on the front left of the load arm (fig. 45). The connection...

  • Page 102

    Ope r ating a nd ope r ation 100 differential lock 5.4.4 activate the differential lock using the button, item 1, on the multi-function lever (fig. 46). With the differential lock engaged, both wheels on the axle can transmit torque in- creasing traction on slippery surfaces. Depress the button item...

  • Page 103

    Ope r ating a nd ope r ation 101 w l 50 fig. 46 switch for differen- tial lock 1 12v 1.

  • Page 104

    Ope r ating a nd ope r ation 102 changing attachments 5.4.5 this operator’s manual describes only the use of the fol- lowing attachments: light cargo buckets • earth buckets • earth buckets with digging teeth • if you wish to use optional attachments with your loader, please observe the following: c...

  • Page 105

    Ope r ating a nd ope r ation 103 w l 50 before assembly, start-up or maintenance, read the 1. Operator’s manual for the relevant attachment. Practice using the attachment before working with it the 2. First time. Familiarize yourself ahead of time with all the functions and control elements. The loa...

  • Page 106

    Ope r ating a nd ope r ation 104 coupling of attachments environmental note hydraulic oil is hazardous to the environment. Do not allow it to be released uncontrollably into the environment. Warning personal injury hazard. Falling attachments can strike people. Always switch the ► three-way valve (f...

  • Page 107

    Ope r ating a nd ope r ation 105 w l 50 fig. 47 switching the three- way valve hydraulic connection hydraulic locking mecha- nism nicht unter last schalten do not operate under load ne pas changer de vitesse sous charge quitar la presión antes de cambiar.

  • Page 108

    Ope r ating a nd ope r ation 106 for hydraulically activated attachments: screw the attachment‘s quick couplers to the appropri- 8. Ate connections of the attachment hydraulic lines on the loader lift arms. Check that there are no leaks in the attachment‘s hy- 9. Draulic system and the quick coupler...

  • Page 109

    Ope r ating a nd ope r ation 107 w l 50 fig. 48 coupling the hydraulic locking mechanism 2 1 3 4 rocker switch for relieving pressure in the optional hydraulics uncoupling attachments lower the attachment until it is firmly resting on • a hard surface. Close attachments with movable components • suc...

  • Page 110

    Ope r ating a nd ope r ation 108 lower the attachment. 1. Press the »relieve pressure« button (fig. 48) to depres- 2. Surize the lines for the attachment hydraulics. Disconnect the hydraulic couplers and place covers over 3. The exposed ends to exclude foreign material. Place the hydraulic hoses ove...

  • Page 111

    Ope r ating a nd ope r ation 109 w l 50 bucket 5.4.6 function the light cargo bucket / earth bucket attachments are in- tended for loosening, picking up, transporting and dumping materials. Attaching the bucket read the chapter »changing attachments« (section 5.4.5, page 102). Operating element oper...

  • Page 112

    Ope r ating a nd ope r ation 110 operation when dumping the bucket and loading vehicles, you can perform two work movements at the same time if necessary, e.G. Lifting and dumping or lowering and curling to load. To do so it is necessary to overlay the movement on the control lever (fig. 49). 0 = ne...

  • Page 113

    Ope r ating a nd ope r ation 111 w l 50 use the level indicator (fig. 50) in order to assess more effectively the curl position of the attachment from the op- erator’s seat. With the attachment in a horizontal position, mark the place on the tipping cylinder on which the level indicator is located w...

  • Page 114

    Ope r ating a nd ope r ation 112 loading work lower the bucket to pick up loose material so that it is paral- lel to the ground and move it into the material to be loaded. Here the driving speed should correspond to the type of material and the respective working conditions (fig. 51). Working with t...

  • Page 115

    Ope r ating a nd ope r ation 113 w l 50 now raise the loader lift arms slightly so that the weight is on the loader‘s front axle. This is to avoid excess wheel slip. You can also manually restrict wheel slip by inching. To fill the bucket, curl the bucket as shown in fig. 52 as the loader arms are s...

  • Page 116

    Ope r ating a nd ope r ation 114 excavation work soft material: lower the bucket to the ground to lift out soft material and tilt the bucket forward until you have a digging angle. If you start driving the loader forward now, the bucket‘s digging edge will break into the ground. Now make the tilting...

  • Page 117

    Ope r ating a nd ope r ation 115 w l 50 tip-overs 5.4.7 if the machine tips over, or in the event of an ex- treme slope condition, take the following steps to avoid engine damage: stop the engine as quickly as practical to avoid • damage from lubrication starvation. Do not operate the engine or mach...

  • Page 118

    Ope r ating a nd ope r ation 116 at low outside temperatures precaution measures for various temperature conditions 5.4.8 at high outside temperatures take the following precautions at high temperatures to pre- vent the loader from being damaged: regularly check the cooling system: • keep the engine...

  • Page 119

    Ope r ating a nd ope r ation 117 w l 50 take the following precautions at low temperatures to pre- vent the loader from being damaged and to make the loader easier to start: use the proper coolant mix. • use engine lubricating oil of the proper viscosity • class. Use diesel fuel for low temperatures...

  • Page 120

    Ope r ating a nd ope r ation 118 optional equipment 5.5 activate the loader lift arm damper control to im- prove ride quality and stability during travel with the loader. Disengage the damper control before at- tempting to use the loader for loading operations. Before engaging the damper feature, ve...

  • Page 121

    Ope r ating a nd ope r ation 119 w l 50 loader lift arm damper activation move the rocker switch item 2 into position 2: • the indicator light in the switch is illuminated damping is engaged. Do not actuate the loader lift arm, – bucket or attachment control. Move the rocker switch item 2 into posit...

  • Page 122

    Ope r ating a nd ope r ation 120 electrical connector on the loader lift arms activate the electrical connector on the lift arms (fig 57) by depressing the switch 2 designated in fig 58. The electrical connector on the loader lift arm is used to connect attachments for which certain functions must b...

  • Page 123

    Ope r ating a nd ope r ation 121 w l 50

  • Page 124

    Towing a nd tr a nsporting 122 towing and transporting 6 towing 6.1 warning personal injury or equipment damage hazards from improper towing. Do not attempt to tow the machine if the steering system or brake system is not serviceable. Loss of control ► during towing can occur. Load the wheel loader ...

  • Page 125

    Towing a nd tr a nsporting 123 w l 50 towing equipment notice towing the wheel loader can damage the hydro- static propulsion system unless the following con- ditions are met: do not tow the wheel loader more than 500 meters (0.3 miles). Do not exceed 2 km/h (1.2 mph) during the towing operation. Tr...

  • Page 126

    Towing a nd tr a nsporting 124 disconnecting the drive (bypass- switching) warning possibility of personal injury or equipment dam- age. An unsecured operator station can move or tip unexpectedly during a towing operation. Do not attempt towing the wheel loader until the ► operator cab/platform has ...

  • Page 127

    Towing a nd tr a nsporting 125 w l 50 to tow the loader, it is necessary that you disconnect the drive. In this case the travel transmission is switched on to free wheeling. For this purpose the variable displacement pump has incorporated high pressure relief valves with bypass function. Tilt the op...

  • Page 128

    Towing a nd tr a nsporting 126 transporting 6.2 articulation frame lock personal injury hazard. Install the articulation frame lock slowly and carefully to reduce the risk of in- jury. The articulation frame lock is stored on the front frame of the wheel loader as illustrated in fig 61. It is secure...

  • Page 129

    Towing a nd tr a nsporting 127 w l 50 articulation frame lock installed fig. 61 articulation frame lock articulation frame lock storage posi- tion 1.

  • Page 130

    Towing a nd tr a nsporting 128 clean the wheel loader to reduce the hazard of dirt and debris falling from the machine during transport. Clean the wheel loader tires, loading ramp and transport vehicle load deck to reduce the slipping hazard during loading. Use a transport vehicle rated to carry the...

  • Page 131

    Towing a nd tr a nsporting 129 w l 50 use the attachment points (fig. 63) that are marked with labels (fig. 62) indicating the lifting points. Rotate the eyelets on the rear attachment points by loosening the mounting screws. Retighten the mounting screws after rotating the eyelets into lifting posi...

  • Page 132

    Towing a nd tr a nsporting 130 notice failure to securely bind the loader to the transport can cause the loader to shift. This can lead to insta- bility in the behavior of the transport or the wheel loader being lost from the transport. Confirm that the articulation frame lock is correctly installed...

  • Page 133

    Towing a nd tr a nsporting 131 w l 50 use the attachment points (fig. 65) marked with labels (fig. 64) to tie down the loader. Fig. 64 tie down point label rear fig. 65 tie down points front.

  • Page 134

    Towing a nd tr a nsporting 132 fig. 66 tying down the loader.

  • Page 135

    Low e ring loade r ar ms 133 w l 50 lowering loader arms 7 emergency lowering for loaders with electri- cally unlockable lowering brake valves if the engine fails: switch the starting key on (indicator lights must il- 1. Luminate). Activate the switch for float position item 1 (fig. 67). 2. Lower th...

  • Page 136

    Relieving residual pressure in the hydraulic system 134 relieving residual pressure in the hydraulic system 8 proceed as follows to reduce the residual pressure in the hydraulic circuits (adhere to the order of the individual work steps): lower the loader lift arms as far as 1. They will go. Stop th...

  • Page 137

    Relieving residual pressure in the hydraulic system 135 w l 50 fig. 68 reducing residual pressure illustration 1 illustration 2 opening the load holding control valves warning personal injury hazard. A fine jet of hydraulic fluid under high pressure can pierce the skin. Seek medical assistance immed...

  • Page 138

    Relieving residual pressure in the hydraulic system 136 for loaders with load holding control valves on the lifting and attachment cylinder, open the valves (fig. 69). Unscrew the nuts item 1 1. Unscrew the screw item 2 until the loader lift arms slowly 2. Lowers. Should the loader lift arms not low...

  • Page 139

    Securing the loade r 137 w l 50 securing the loader 9 the following instructions apply to stopping and parking the loader after daily operation, transport- ing the loader and to all servicing, inspection and repair work. Place the loader on an even, dry surface that can sup- • port sufficient weight...

  • Page 140

    Se rvicing a nd inspec tion 138 servicing and inspection 10 basic safety instructions for servicing and inspection 10.1 operator’s manual perform servicing and inspection work only if you have • read and understood the operator’s manual. Observe the basic safety instructions and all the warning • si...

  • Page 141

    Se rvicing a nd inspec tion 139 w l 50 securing the loader and attachment perform servicing and inspection work only if the loader is secured as described in the chapter »securing • the loader«. Crushing hazard. An improperly supported loader lift arm may fall unexpectedly. • do not perform maintena...

  • Page 142

    Se rvicing a nd inspec tion 140 tools use diagnostic and repair tools that are in serviceable • condition and have been calibrated regularly to ensure accuracy. Consult the repair manual for recommended special tools necessary to safely complete the repair task. Cleaning clean the machine before att...

  • Page 143

    Se rvicing a nd inspec tion 141 w l 50 residual pressure in the hydraulic system personal injury hazard. Pressurized jets of fluid can penetrate human skin. • in the event that oil penetrates the skin, seek immediate medical attention to reduce the risk of infection and • complications from infectio...

  • Page 144

    Se rvicing a nd inspec tion 142 threaded connections, pipes, hydraulic hoses warning personal injury hazard. Pressurized jets of fluid can penetrate human • skin. In the event that oil penetrates the skin, seek • immediate medical attention to reduce the risk of infection and complications from infe...

  • Page 145

    Se rvicing a nd inspec tion 143 w l 50 batteries explosion hazard. A rapidly discharged battery vents explosive gas- es. Do not use open flames or smoke near batter- • ies. -use particular caution to vent the battery storage area well to avoid gas accumulation. Follow jump start procedures to reduce...

  • Page 146

    Se rvicing a nd inspec tion 144 electrical system always observe the correct order when disconnecting • the battery. Disconnecting: first the negative pole and then the posi- - tive pole. Connecting: first the positive pole and then the nega- - tive pole. Always disconnect the battery before working...

  • Page 147

    Se rvicing a nd inspec tion 145 w l 50 after maintenance after completing maintenance and inspection work, al- • ways reattach all the safety devices. Do not start the engine until the loader is no longer being • worked on and everyone has left the danger area. Only start the engine from the operato...

  • Page 148

    Se rvicing a nd inspec tion 146 servicing and inspection intervals 10.2 daily servicing perform the following tasks: clean the machine • clean the air filter • check for general damage • check the coolant level/condition • check the engine oil level/condition • check the engine leakage • check the h...

  • Page 149

    Se rvicing a nd inspec tion 147 w l 50 weekly servicing perform the following tasks: clean fuel filter for the presettling reservoir (if present) • check axles for leaks • check hydraulic fluid cooler and water radiator for leaks • and dirt check exterior condition of the radiators, i.E. The hos- • ...

  • Page 150

    Se rvicing a nd inspec tion 148 first inspection after 50 operating hours tasks to be performed (check) 50 hours inspection check the transmission, engine and hydraulic system for leaks check the hydraulic, engine coolant and engine oil coolers for dirt check the coolant level and antifreeze check t...

  • Page 151

    Se rvicing a nd inspec tion 149 w l 50 tasks to be performed (check) 50 hours inspection check the electrical system check the foot brake and parking brake, adjust if necessary check the hydraulic steering check the lighting system (if present) check the idle speed check the valve clearance, adjust ...

  • Page 152

    Se rvicing a nd inspec tion 150 inspection after 500 operating hours tasks to be performed (check) 500 hours inspection check transmission, engine and hydraulic system for leaks check the hydraulics, water and hydraulic fluid radiators for dirt check the coolant level and antifreeze check the tensio...

  • Page 153

    Se rvicing a nd inspec tion 151 w l 50 tasks to be performed (check) 500 hours inspection check the acid level of the battery check: instruments, indicators + audible warning devices check the electrical system check the foot brake and parking brake, adjust if necessary check the hydraulic steering ...

  • Page 154

    Se rvicing a nd inspec tion 152 tasks to be performed (check) 500 hours inspection set the valve clearance change the hydraulic fluid change the hydro return filter change the hydro pressure filter change the oil in the transfer case change the oil in the axles are all the grease nipples lubricated?...

  • Page 155

    Se rvicing a nd inspec tion 153 w l 50 inspection intervals maintenance and inspection personnel must have specialized knowledge of servicing and inspection work on the loader. Follow the operator’s manual for the engine. Perform the maintenance work listed in the inspec- tion schedule depending on ...

  • Page 156

    Se rvicing a nd inspec tion 154 work to be performed operating hours: 250, 750, 1000, 1250, 1750, 2000, 2250, 2750, 3000, etc. Operating hours: 1500, 2500, 3500, 4500, etc. Monthly annually check transmission, engine and hydraulic system for leaks x x x x check the hydraulic and water radiators for ...

  • Page 157

    Se rvicing a nd inspec tion 155 w l 50 work to be performed operating hours: 250, 750, 1000, 1250, 1750, 2000, 2250, 2750, 3000, etc. Operating hours: 1500, 2500, 3500, 4500, etc. Monthly annually check the lighting system – (if present) x x x x check the exhaust system x x check the hinge pins and ...

  • Page 158

    Se rvicing a nd inspec tion 156 work to be performed operating hours: 250, 750, 1000, 1250, 1750, 2000, 2250, 2750, 3000, etc. Operating hours: 1500, 2500, 3500, 4500, etc. Monthly annually check rops/fops structures x x check the condition of the tires and the tire pressure x x x x change the engin...

  • Page 159

    Se rvicing a nd inspec tion 157 w l 50 work to be performed operating hours: 250, 750, 1000, 1250, 1750, 2000, 2250, 2750, 3000, etc. Operating hours: 1500, 2500, 3500, 4500, etc. Monthly annually check all the oil levels x x inspect according to the accident prevention regulations x x valve clearan...

  • Page 160

    Se rvicing a nd inspec tion 158 lubrication schedule 10.3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 fig. 70 points of lubrication.

  • Page 161

    Se rvicing a nd inspec tion 159 w l 50 item point of lubrication nipples 13 bearing for reversing lever [1] 14 tie rod, front [1] 15 cab tipping cylinder (under the cab) [2] 16 drive shaft, rear [1] 17 center pivot bearing, top (remote lubrication) [1] 18 steering cylinder, rear (remote lubrication)...

  • Page 162

    Se rvicing a nd inspec tion 160 cleaning the loader 10.4 warning burn hazard. High pressure water at the maximum recommended temperature (80°c (176°f)) will cause severe burns and is extremely hazardous if contact is made with the eyes. Wear protective clothing and safety goggles ► while cleaning th...

  • Page 163

    Se rvicing a nd inspec tion 161 w l 50 environmental note avoid environmental damage. Clean the loader only in a suitable place where the waste water can be collected in an ecologically sound manner. Collect contaminated waste water and dispose of it in an ecologically sound manner. When the loader ...

  • Page 164

    Se rvicing a nd inspec tion 162 general safety check 10.5 check: all steel parts for damaged and loose screws/bolts, par- • ticularly the rops structure, the condition of the seat belt, • the quick-change system for the attachments, • that all the hinge pins are in the correct position and are • sec...

  • Page 165

    Se rvicing a nd inspec tion 163 w l 50 specifications and filling quantities 10.6 item capacity in liters / gallons fluid / grease nipple specification fuel reservoir 90 23.78 diesel fuel #1 or #2, see engine manual engine oil with filter 10,5 2.77 engine oil sae 10 w 40 ambient temper- ature -20°c ...

  • Page 166

    Se rvicing a nd inspec tion 164 maintenance and inspection work 10.7 preparation for maintenance and inspection 10.7.1 work opening the engine enclosure perform maintenance and inspection work only if the loader is secured as described in section 9, page 137 »securing the loader«. The operator cab/p...

  • Page 167

    Se rvicing a nd inspec tion 165 w l 50 unlock the engine enclosure lock by pulling the opener – on the left behind the operator‘s seat item 1 (fig. 71). Lift the engine enclosure. For lifting, use the handle to – the right or the left of the engine enclosure item 2 (fig. 71). The engine enclosure lo...

  • Page 168

    Se rvicing a nd inspec tion 166 tilting the operator’s platform warning improperly tilting the cab can cause personal injury or damage to equipment. Before tilting the cab remove loose objects from ► the cab to avoid control/indicator damage. Close and confirm that the doors are latched ► do not att...

  • Page 169

    Se rvicing a nd inspec tion 167 w l 50 fig. 72 position of the cab mounting bolts fig. 73 tilting the cab 1 2 3.

  • Page 170

    Se rvicing a nd inspec tion 168 lowering the operator’s platform: move the switch lever for the pump item 3 (fig. 73) to 1. The left (arrow pointing downwards). Put the pump lever item 1 (fig. 73) into the intended 2. Opening in the hand pump item 2 (fig. 73). Release the locking of the operator’s p...

  • Page 171

    Se rvicing a nd inspec tion 169 w l 50 servicing the engine 10.7.2 checking the engine oil level warning shearing, pinching, and crushing hazards exist when the engine is running. Do not open the engine enclosure until the en- ► gine has stopped. Burn hazard. The engine, engine exhaust and cooling s...

  • Page 172

    Se rvicing a nd inspec tion 170 stop the loader on a horizontal surface and set the park- 1. Ing brake. Lower the loader lift arms and attachment to the ground 2. Or working surface. Stop the engine. 3. Wait until the engine has cooled and the dipstick is com- 4. Fortable to touch. Open the engine e...

  • Page 173

    Se rvicing a nd inspec tion 171 w l 50 changing the engine oil warning burn hazard. The operating oil temperature in the diesel engine is more than 93°c (200°f). Skin contact with hot oil will result in severe burns. Stop the engine and wait until the engine oil ► drain plug is comfortable to touch ...

  • Page 174

    Se rvicing a nd inspec tion 172 bring the engine to operating temperature and allow to 1. Cool until the drain plug is comfortable to touch. Stop the loader on a horizontal surface and set the park- 2. Ing brake. Lower the loader lift arm and attachment to the ground 3. Or working surface. Stop the ...

  • Page 175

    Se rvicing a nd inspec tion 173 w l 50 changing the engine oil filter warning burn hazard. The operating oil temperature in the diesel engine is more than 93°c (200°f). Skin contact with hot oil will result in severe burns. Stop the engine and wait until the engine oil ► drain plug is comfortable to...

  • Page 176

    Se rvicing a nd inspec tion 174 the engine oil filter is located on the left side of the engine (fig. 77). Put a receptacle for draining oil under the engine oil 1. Filter. Unscrew the engine oil filter item 1 (fig. 77): 2. Clean the sealing surface of the filter holder item 2 (fig. 3. 77). Lightly ...

  • Page 177

    Se rvicing a nd inspec tion 175 w l 50 servicing the fuel system 10.7.3 warning personal injury hazard. Moving engine components can crush or cut. Hot engine components can cause serious burns. Do not open the engine enclosure until the en- ► gine stops. Do not touch engine components until they hav...

  • Page 178

    Se rvicing a nd inspec tion 176 servicing the water separator place a receptacle under the water separator item 1 1. (fig. 79). Unscrew the drain plug from the inspection glass item 2. A (fig. 79). The collected water now runs out. 3. Retighten the drain plug when the collected water has 4. Run out....

  • Page 179

    Se rvicing a nd inspec tion 177 w l 50 changing the fuel pre-filter the fuel pre-filter item 2 (fig. 78) can only be re- placed in conjunction with the entire housing. Place a receptacle under the fuel pre-filter. 1. Remove the hose clamps from the fuel pre-filter. 2. Disconnect the fuel hoses. 3. R...

  • Page 180

    Se rvicing a nd inspec tion 178 venting the fuel system fill the fuel reservoir. 1. Open the engine enclosure. 2. Pump with the hand-feed pump (fig. 81) until you feel 3. Resistance. Then pump 3 or 4 more times. The engine can now be started. 4. Fig. 81 fuel hand-feed pump.

  • Page 181

    Se rvicing a nd inspec tion 179 w l 50 servicing the air filter system 10.7.4 the loader is equipped with a dry air filter for filtering the engine intake air. The dry air filter consists of a main filter and a safety filter element. To access the dry air filter, open the engine enclosure. Warning c...

  • Page 182

    Se rvicing a nd inspec tion 180 air filter dust valve check if the outlet slot on the dust valve item 1 (fig. 82) is clear. Remove dust accumulation by pinching the valve. Check main air filter element / clean / replace clean or replace the main filter element item 1 (fig. 83) during inspections or ...

  • Page 183

    Se rvicing a nd inspec tion 181 w l 50 remove the fasteners on the cover item 2 (fig. 82) and 1. Take off the cover. Remove the main filter element item 1 (fig. 83). Do not 2. Remove the safety filter element in the process. Perform a visual inspection of the intake manifold be- 3. Tween the filter ...

  • Page 184

    Se rvicing a nd inspec tion 182 servicing the cooling system 10.7.5 the radiator is installed behind the diesel engine (fig. 86). One part cools the hydraulic fluid, while the other part cools the engine. Warning crushing/shearing hazard. Moving engine parts can crush and cut. Do not open the engine...

  • Page 185

    Se rvicing a nd inspec tion 183 w l 50 the temperature indicator light item 6 (fig. 13, page 48) is connected to two temperature sensors. One is located on the engine (fig. 84), the other on the hydraulic oil reservoir (fig. 85). To ascertain whether the engine or hydraulic oil (or both) have become...

  • Page 186

    Se rvicing a nd inspec tion 184 checking the coolant level / refilling the coolant warning burn hazard. Hot fluid (exceeding 93°c (200°f)) will spray un- der pressure. Contact with skin will cause severe burns. Do not remove the radiator cap if the engine is ► at operating temperature. Poison hazard...

  • Page 187

    Se rvicing a nd inspec tion 185 w l 50 check the coolant level at regular intervals. If you look into the radiator opening (fig. 86) from above, the radiator fins should be covered with coolant. Make sure that enough antifreeze is always present in the coolant, even in summer, as antifreeze also pre...

  • Page 188

    Se rvicing a nd inspec tion 186 after the coolant has drained completely, flush the system with clear water and making certain to capture the drained liquid in a container. Correctly reattach the lower radiator hose. 1. Mix new coolant using equal parts of clean tap water 2. And new antifreeze. Pour...

  • Page 189

    Se rvicing a nd inspec tion 187 w l 50 cleaning the cooling system clean the dirty radiator with compressed air (fig. 88). You can also clean heavily contaminated radiators with water under high pressure. Clean the engine‘s radiator • the hydraulic fluid cooler • the alternator (with compressed air ...

  • Page 190

    Se rvicing a nd inspec tion 188 servicing the hydraulic system 10.7.6 warning crushing/shearing hazard. Moving engine parts can crush and cut. Do not open the engine enclosure unless the ► engine is stopped to avoid hazards from moving objects (cooling fan and drive belts for the fan and alternator)...

  • Page 191

    Se rvicing a nd inspec tion 189 w l 50 hydraulic fluid cooler the oil radiator is installed behind the diesel engine (fig. 89). One part cools the hydraulic fluid, while the other part cools the engine. Should the loader get too hot during long drives on the road or at high outside temperatures, che...

  • Page 192

    Se rvicing a nd inspec tion 190 checking the hydraulic fluid level the hydraulic oil reservoir is located on the left side of the rear frame. To access it, open the engine enclosure (refer- ence section 10.7.1, pages 164-168). Never let the oil level drop below the »minimum« mark on the dip stick. W...

  • Page 193

    Se rvicing a nd inspec tion 191 w l 50 fig. 91 hydraulic fluid dip stick fig. 90 ventilation filter 1 stop the loader on a horizontal surface and set the park- 1. Ing brake. Lower the loader lift arms and attachment to the ground 2. Or work surface. Stop the engine. 3. Remove the hydraulic oil fille...

  • Page 194

    Se rvicing a nd inspec tion 192 changing the hydraulic fluid warning burn hazard. The operating temperature of the hydraulic sys- tem is 93°c (200°f). Contact with skin will cause severe burns. Wear protective clothing. ► rinse affected areas with water immediately ► and seek medical treatment. Envi...

  • Page 195

    Se rvicing a nd inspec tion 193 w l 50 once the hydraulic fluid has been drained: remove the filter insert item b (fig. 94). 1. Clean the reservoir bottom and reservoir interior with 2. Hydraulic or detergent oil through the opening. Replace the filter element of the return filter (see the 3. Sectio...

  • Page 196

    Se rvicing a nd inspec tion 194 changing the return filter element the hydraulic system is equipped with a return filter item 2 (fig. 93). It is connected to an indicator light. An installed bypass valve secures the return valve against positive pres- sure. Environmental note let the pressure from t...

  • Page 197

    Se rvicing a nd inspec tion 195 w l 50 stop the loader on a horizontal surface and set the park- 1. Ing brake. Lower the loader lift arms and attachment to the ground 2. Or work surface. Stop the engine. 3. Relieve the residual hydraulic pressure using the pro- 4. Cedure described in section 8, page...

  • Page 198

    Se rvicing a nd inspec tion 196 venting the hydraulic system check the fluid level in the hydraulic fluid reservoir. If 1. Necessary, add hydraulic fluid until the fluid level is at the »maximum« mark. Start the engine and let it idle for a few minutes. 2. To purge air from the cylinders, slowly act...

  • Page 199

    Se rvicing a nd inspec tion 197 w l 50 servicing the axles 10.7.7 the axial piston oil motor of the loader‘s drive hydraulics is mounted on the transfer case. The transfer case is connect- ed to the rear axle of the loader. The front axle is powered via the drive shaft. The wheels are driven via two...

  • Page 200

    Se rvicing a nd inspec tion 198 fig. 96 transfer case c d fig. 97 wheel reduction e stop the loader on a horizontal surface and set the park- 1. Ing brake. Lower the loader lift arms and attachment to the ground 2. Or work surface. Stop the engine. 3. Remove the hex socket screws items a, c, e (fig....

  • Page 201

    Se rvicing a nd inspec tion 199 w l 50 changing the axle oil warning burn hazard. The transmission oil operating temperature can cause serious burns if contact is made with skin. If hot oil contacts the skin, seek medical atten- ► tion immediately for burn treatment. Environmental note avoid environ...

  • Page 202

    Se rvicing a nd inspec tion 200 once the transmission oil has been drained: first fill the wheel reduction transmission, after you have 1. Aligned the wheels as illustrated in (fig. 97). The transmission oil must be at or below the bottom 2. Edge of the opening. Insert the sealing plug item e. 3. In...

  • Page 203

    Se rvicing a nd inspec tion 201 w l 50 servicing the brakes 10.7.8 the hydrostatic drive is used as an operating brake and operates equally without wear resistance on all four wheels. In addition, the loader has a foot brake and parking brake. The foot brake and parking brake consists of a hub brake...

  • Page 204

    Se rvicing a nd inspec tion 202 checking the brake fluid level / adding brake fluid warning health hazard. Brake fluid can be absorbed into the skin or cause infections. Avoid contact with skin and eyes. ► wear protective gloves and eye protection. ► environmental note avoid environmental damage. Do...

  • Page 205

    Se rvicing a nd inspec tion 203 w l 50 the brake fluid reservoir is on the left at the back, under- neath the engine enclosure (fig. 98). The control marks »max« and »min« are on the side of the container. If the brake oil level in the brake fluid container falls below the »min« mark, fill with pres...

  • Page 206

    Se rvicing a nd inspec tion 204 servicing the tires and wheels 10.7.9 warning injury or explosion hazards. Do not attempt to remove or install tires on the ► rims. Special tools and training are required to dismount and mount tires safely. Contact a qualified technician for tire repair service. Do n...

  • Page 207

    Se rvicing a nd inspec tion 205 w l 50 air pressure table for tires tires pr air pressure 7.00-12 as 6 3,2 bar 47 psi 27x8.50-15 em 8 4,2 bar 62 psi 27x10.50-15 em 8 4,2 bar 62 psi 31x15.50-15 as 8 3,1 bar 45 psi 10.0/75-15,3 as 8 3,1 bar 45 psi 11.5/80-15,3 as 10 4,5 bar 66 psi 8 3 bar 44 psi 10.5/...

  • Page 208

    Se rvicing a nd inspec tion 206 changing wheels warning injury hazard. An improperly secured machine can move or fall unexpectedly while changing wheels. To remove a wheel for service: stop the loader on a flat surface ► lower the loader lift arms and attachment to the ► ground or work surface engag...

  • Page 209

    Se rvicing a nd inspec tion 207 w l 50 stop the loader on a horizontal surface with a hard foun- 1. Dation and set the parking brake. Lower the loader lift arms and attachment to the ground 2. Or work surface. Stop the engine. 3. Position the jack under the axle next to the wheel to 4. Be changed. M...

  • Page 210

    Se rvicing a nd inspec tion 208 change the cab air filter annually, or more frequent- ly under dusty conditions. Servicing the cab vent filter 10.7.10 the loader is equipped with a dry air filter for filtering the engine intake air for cab ventilation. The filter is located on the front of the cab a...

  • Page 211

    Se rvicing a nd inspec tion 209 w l 50 service and repair work require particular special- ised skills and may only be performed in an autho- rized wacker neuson service center. Do not do any welding work on components of the coolant circuit or in their immediate vicinity. Warning burn hazard. Coola...

  • Page 212

    Se rvicing a nd inspec tion 210 servicing the electrical system 10.7.12 warning electric shock hazard. Always disconnect the battery before working ► on the electrical system if tools, spare parts, etc. With electrical components or contacts could touch it. Electric shock and burn hazards. Do not cl...

  • Page 213

    Se rvicing a nd inspec tion 211 w l 50 there are two 40 ampere fuses in the battery box (fig. 100). One is the main fuse for the cab, while the other is the main fuse for the lights and con- trols. For loaders with deutz engine, there are also two 50 ampere fuses that protect the preheating sys- tem...

  • Page 214

    Se rvicing a nd inspec tion 212 item fused function for box 1 rating (a) 1 available 7,5 2 turn signal 7,5 3 warning flasher 7,5 4 brake light 15 5 side lamp left 10 6 side lamp right 7,5 7 low beam light 7,5 8 main beam 7,5 fuse allocation fig. 102 box 1 box 2 box 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14...

  • Page 215

    Se rvicing a nd inspec tion 213 w l 50 item fused function for box 2 rating (a) 9 engine 10 10 cab 7,5 11 instruments, indicator lights 7,5 12 front windshield wiper, forward warning device 15 13 heater fan 15 14 stability indicator 3 15 available 10 16 available 7,5 item fused function for box 3 ra...

  • Page 216

    Se rvicing a nd inspec tion 214 battery the battery has a nominal voltage of 12 volts; the battery capacity is 77 ah. The battery is located on the left side of the loader in the engine compartment item 1 (fig. 103). To access it, open the engine enclosure. Warning explosion and burn hazard. Batteri...

  • Page 217

    Se rvicing a nd inspec tion 215 w l 50 servicing the battery maintain a clean battery cable connection at both the • positive and negative posts. Seal the joints with special sealant for electrical connections. Dirt and moisture can cause a trickle loss of electricity when the wheel loader is not in...

  • Page 218

    Se rvicing a nd inspec tion 216 checking the battery acid level warning personal injury hazards. Do not open the engine enclosure or attempt to tilt the operator cab/platform if the engine is running. Follow the instructions in section 10.7.1, pages 164-168, for opening the hood and tilting the cab....

  • Page 219

    Se rvicing a nd inspec tion 217 w l 50 disconnecting and connecting the battery / changing the battery removing the battery: stop the loader on a horizontal surface and set the park- 1. Ing brake. Lower the loader lift arms and attachment to the ground 2. Or work surface. Stop the engine. 3. Before ...

  • Page 220

    Se rvicing a nd inspec tion 218 jump-starting / emergency starting 10.8 warning explosion and burn hazard. Batteries produce and vent gases that can be explosive if concentrated in an unventilated space. Do not smoke or use open flames near a storage battery. ► do not place objects on the battery. I...

  • Page 221

    Se rvicing a nd inspec tion 219 w l 50 before jump-starting, check if the loader‘s dead battery is functional: switch off all the loader‘s electrical controls. 1. Switch the starting key to position 1 (operation). The 2. Warning lights must light up now! If the warning lights do not light up, the ba...

  • Page 222

    Se rvicing a nd inspec tion 220 getting ready switch off all the loader‘s electrical controls. 1. Switch the starting key to position 0. 2. Drive the vehicle with the good battery (charged battery) 3. Near but not touching the loader. Switch off all electrical controls on the vehicle with the 4. Goo...

  • Page 223

    Se rvicing a nd inspec tion 221 w l 50 loader storage 10.9 the specified measures refer to shutting down and re-start- ing the loader over longer periods of time. Follow the operator’s manual for the engine. Shutting down the loader park the loader as described in 1. Section 9, page 137 »securing th...

  • Page 224

    Se rvicing a nd inspec tion 222 preserving the engine clean the engine in a suitable place using a high-pres- 1. Sure cleaner. Bring the engine to operating temperature. 2. Drain the engine oil and dispose of it in an ecologically 3. Sound manner. Pour anti-corrosion oil into the engine. 4. Drain th...

  • Page 225

    Se rvicing a nd inspec tion 223 w l 50 remove preservatives from the engine remove the closures from the intake and exhaust open- 1. Ing of the engine. Remove the anti-corrosion agent from the pulley. 2. Install the fan belt. 3. Drain the preservative oil and pour in engine oil. 4. Start up the engi...

  • Page 226

    Troubleshooting a nd e me rge ncy m ainte na nce 224 fault / malfunction possible cause remedy engine does not start handbrake not set, drive direction switched set the handbrake, shift to neutral fuel reservoir empty fill up the reservoir and vent the fuel system if necessary fuel filter clogged, p...

  • Page 227

    Troubleshooting a nd e me rge ncy m ainte na nce 225 w l 50 fault / malfunction possible cause remedy the engine is getting too hot the engine radiator / oil cooler air flow is re- stricted by debris clean it coolant level is too low fill it up the thermostat is jammed have the thermostat replaced a...

  • Page 228

    Troubleshooting a nd e me rge ncy m ainte na nce 226 tr ou ble sh oo tin g f or t ra ns m is sio n p um p / o il e ng in e suc tion pre ssu re co ntro l p res - sur e hig h pre ssu re supp ly pre s- sur e »s « tra nsmi ssio n pu mp x 1 /x 2 t ran sm issio n p um p m a /m b t ran sm issio n p um p »g...

  • Page 229

    Troubleshooting a nd e me rge ncy m ainte na nce 227 w l 50 tr ou bl es ho ot in g f or t he l oa de r di es el e ng ine s pin s v e- hic le d oe s n ot s tan d s till ve hic le s tar ts d riv ing too l ate en gin e i s p res se d h ard no t e no ug h d riv ing p ow er dr ivin g s pe ed is no t rea ...

  • Page 230

    Sa fet y instruc tions for r e pairs 228 safety instructions for repairs 12 observe in particular: the basic safety instructions. • the basic safety instructions for servicing and inspec- • tion. All warning signs and instructions attached to the load- • er. That the descriptions of work processes p...

  • Page 231

    Sa fet y instruc tions for r e pairs 229 w l 50 articulated frame lock always install the articulating joint lock when performing • repair work in the articulation crush zone. Remove the articulated joint lock and store it properly • (ref. Section 6.2, page 126) after completing the repair work. Acc...

  • Page 232

    Sa fet y instruc tions for r e pairs 230 do not remove seals or sealing wax: changing rated pressures for relief valves is prohibited • without the express consent of wacker neuson. Do not damage or remove seals and sealing wax on • the engine, the pressure limiting valves and accumula- tors. If an ...

  • Page 233

    Sa fet y instruc tions for r e pairs 231 w l 50 engine 12.2 perform repair work only if the loader is secured as de- • scribed in section 9, page 137 »securing the loader«. Welding work 12.3 only a certified trained welder shall perform welding • work. Only certain authorized individuals under the s...

  • Page 234

    Sa fet y instruc tions for r e pairs 232 before performing welding work on the loader disconnect the battery as described in this operator’s • manual. Disconnect the positive pole (terminal b+) on the gen- • erator. Switch off the battery disconnect switch (if present). • protect bare terminals and ...

  • Page 235

    Sa fet y instruc tions for r e pairs 233 w l 50 hydraulic system 12.4 before performing repair work, relieve the pressure in • the hydraulic system as described in section 8, page 134 »relieving residual pressure in the hydraulic system«. Replace damaged and leaky hydraulic lines and hoses • with ne...

  • Page 236

    F i n a l s h u t d ow n o f t h e loa d e r / d ec o m m i ssi o n i n g 234 final shutdown of the loader / decommissioning 13 should you no longer plan to use the loader as intended, make sure that it is shut down, i.E. Decommissioned, and disposed of according to the valid regulations. Before dis...

  • Page 237

    Fina l shutdown of the loade r / decom mis sioning 235 w l 50 disposing of the loader: subsequent recycling of the loader must take place in • accordance with the current state of the art at the time of recycling, taking into account the accident prevention regulations. Dispose of all parts at the s...

  • Page 238

    A ppe ndix 236 appendix 14 ordering replacement parts 14.1 wacker neuson- machine type • specify the serial number of the machine (see rating • plate) for the engine, specify the respective engine number item number and designation of the replacement part • address with telephone number (in the even...

  • Page 239

    A ppe ndix 237 w l 50 loader type: vehicle id no.: engine type: engine no.: delivery date: importer (name; address): service garage (name; address): enter the most important data for your loader on this page. In this way, you can quickly access the vehicle id no. And other important data when order-...

  • Page 240

    A ppe ndix 238 1st inspection performed on: operating hours: stamp / signature of the garage 2nd inspection performed on: operating hours: stamp / signature of the garage 3rd inspection performed on: operating hours: stamp / signature of the garage inspection verification 14.2 enter the inspections ...

  • Page 241

    A ppe ndix 239 w l 50 4th inspection performed on: operating hours: stamp / signature of the garage 6th inspection performed on: operating hours: stamp / signature of the garage 5th inspection performed on: operating hours: stamp / signature of the garage 7th inspection performed on: operating hours...

  • Page 242

    A ppe ndix 240 8th inspection performed on: operating hours: stamp / signature of the garage 10th inspection performed on: operating hours: stamp / signature of the garage 9th inspection performed on: operating hours: stamp / signature of the garage 11th inspection performed on: operating hours: sta...

  • Page 243

    A ppe ndix 241 w l 50 for personal notes.

  • Page 244

    Inde x 242 index activating the optional hydraulics ......................................................................................................................... 95 activating the optional hydraulics using the button ..........................................................................

  • Page 245

    Inde x 243 w l 50 changing wheels ................................................................................................................................................ 206 checking / changing the safety filter ..................................................................................

  • Page 246

    Inde x 244 fuse allocation ................................................................................................................................................... 210 headlights and rotating beacon .............................................................................................

  • Page 247

    Inde x 245 w l 50 servicing the battery .......................................................................................................................................... 215 servicing the brakes ...................................................................................................

  • Page 248

    List of figur es 246 list of figures fig. 1 document pocket .................................................................................................................................. 11 fig. 2 transport of large bales or packaged goods ...........................................................

  • Page 249

    List of figur es 247 w l 50 fig. 25 door put-up hinges ............................................................................................................................... 65 fig. 26 adjusting the operator’s seat ...............................................................................

  • Page 250

    List of figur es 248 fig. 49 control lever movements .....................................................................................................................110 fig. 50 level indicator .........................................................................................................

  • Page 251

    List of figur es 249 w l 50 fig. 73 tilting the cab ...................................................................................................................................... 167 fig. 74 cab safety support .....................................................................................

  • Page 252

    List of figur es 250 fig. 97 wheel reduction .................................................................................................................................. 198 fig. 98 brake fluid container .............................................................................................

  • Page 253

    List of figur es 251 w l 50

  • Page 254

    Wacker construction equipment ag preußenstraße 41 80809 münchen tel. +49 89 35402-0 fax +49 89 35402-390 wacker neuson corporation p.O. Box 9007 menomonee falls, wi 53052-9007 tel. +1 262 255-0500 fax +1 262 255-0550 tel.: 800 770-0957 wacker machinery (hk) ltd. Skyline tower, suite 2303, 23/f 39 wa...