1. DL manuals
  2. Northern Lights
  3. Marine Equipment
  4. O843K
  5. Operator's Manual

Northern Lights O843K Operator's Manual

Manual is about: For Models M843JK, M843NK, NL843NK

Summary of O843K

  • Page 1

    O perator’s m anual o perator’s m anual o843 k for models m843jk, m843nk, nl843nk.

  • Page 2

    Diesel engine exhaust and some of its constituents are known to the state of california to cause cancer, birth defects, and other reproductive harm. — california — proposition 65 warning: northern lights 4420 14th avenue n.W. P.O. Box 70543 seattle, wa 98107 tel: (206) 789-3880 fax: (206) 782-5455 c...

  • Page 3: Operator'S Manual

    O843k 05/03 read this operator's manual thoroughly before starting to operate your equipment. This manual contains information you will need to run and service your new unit. 1 proprietary information this publication is the property of alaska diesel electric, inc. It may not be reproduced in whole ...

  • Page 4

    O843k 05/03 introduction 2 unit identification servicing of marine engines and generator sets presents unique problems. In many cases boats cannot be moved to a repair facility. Marine engines cannot be compared to the servicing of automobiles, trucks or even farm equipment. Failures often occur in ...

  • Page 5

    O843k 05/03 serial numbers 3 safety rules caution: this symbol is used throughout this book to alert you to possible danger areas. Please take special notice of these sections. A warranty registration certificate is supplied with your set. It entitles the original purchaser of our equipment to a war...

  • Page 6

    O843k 05/03 1. Dc circuit breaker 2. Ac circuit breaker for avr 3. Fuel filter 4. Air filter (inside manifold) 5. Intake manifold 6. Fuel lift pump 7. Oil fill (2) 8. Crankcase vent 9. Fuel injector 10. Coolant fill 11. Heat exchanger end cap 12. Injection pump 13. Seawater pump 14. Freshwater block...

  • Page 7

    O843k 05/03 8. Lube oil drain 9. Ac circuit breaker 11. Secondary fuel filter 12. Crankcase vent 13. Lube oil fill 14. Coolant fill 15. Injection pump 16. Fuel inlet and return 17. Oil filter 18. Fuel lift pump 19. Block water drain 20. Dipstick 1. Dc alternator 2. Exhaust outlet 3. Air filter 4. St...

  • Page 8

    O843k 05/03 control panels 6 figure 4-b: series 3 generator control panel figure 4-a: series 1-b generator control panel figure 4-c: series 4 generator control panel 1. Shutdown bypass-preheat switch two functions are built into this switch: the preheating of the engine, and bypassing of the engine ...

  • Page 9

    O843k 05/03 7 control panels 6. Status indicator panel engine monitoring alarms and lamps for monitoring engine functions. 7. Alarm lamp test and reset button press up to test the indicator lights and press down to reset the alarm. 8. Ac voltage adjustment rheostat voltage has been set at the factor...

  • Page 10

    O843k 05/03 8 break-in period 1. The first 100 hours on a new or reconditioned engine are critical to its life and performance. 2. Frequently check the engine temperature and oil pressure gauges (sets with series 3 or 4 panels). 3. Oil consumption is greater during break-in as piston rings take time...

  • Page 11

    O843k 05/03 9 shutdowns and alarms 1. Your unit is fitted with a system to protect it from high water temperature or low oil pressure. A. Generator sets have shutdown systems to stop the engine. They have no warning horns. B. Other alarms and shutdowns are available as optional equipment. Note: do n...

  • Page 12

    O843k 05/03 the servicing schedule chart below shows the service schedule required for proper maintenance of your generator set. More detailed coverage of each service point (sp) is listed on the page noted in the ‘page’ column. Daily: sp1 check oil level in engine sp7 check primary fuel filter sp13...

  • Page 13

    O843k 05/03 50 hours sp5 check v-belt tension sp18 check electrolyte in batteries 100 hours sp3 change lubricating oil filters sp4 check air cleaner sp16 check and clean radiator every 200 hours sp2 change engine oil and filter sp8 change primary filter element (racor) sp9 change secondary fuel filt...

  • Page 14

    O843k 05/03 servicing lubrication - general 1. Use only clean, high quality lubricants stored in clean containers in a protected area. 2. These lubricants are acceptable: a. Api service cc/cd/ce single viscosity oils. B. Api service cc/cd/sf multi-viscosity oils. 3. Use the proper weight oil for you...

  • Page 15

    O843k 05/03 sp4. Air cleaner 1. Inspect air cleaner every 200 hours. In dusty conditions, check more often. 2. Marine sets: if dirty, wash element in soapy water. Rinse and dry thoroughly before re-installing. Replace if necessary. Part numbers are: m843jk and m843nk – #24-23100 3. Industrial sets: ...

  • Page 16

    O843k 05/03 14 servicing fuels - general 1. Use only clean, high quality fuels of the following specifications, as defined by astm designation d975 for diesel fuels: a. Use grade no. 2 diesel at ambient temperatures above freezing 32 °f (0°c). B. Use grade no. 1 at ambient temperatures below freezin...

  • Page 17

    O843k 05/03 15 servicing sp10. Bleeding the fuel system caution: escaping diesel fuel under pressure can penetrate skin causing serious personal injury. Before disconnecting lines be sure to relieve all pressure. Before applying pressure, be sure all connections are tight and lines, pipes and hoses ...

  • Page 18

    O843k 05/03 figure 10: remove delivery line flare nuts. Figure 11: remove delivery lines. Figure 12: cover lines, inlets and injection pump outlets. Figure 14: remove return line. Figure 15: unscrew injector. Figure 16: remove and replace copper sealing washer. Figure 17: reinstall injector. Torque ...

  • Page 19

    O843k 05/03 sp11. Injector service 1. Injectors should be checked every 600 hours. Check should be made by a northern lights dealer or local injection repair station. Caution: escaping diesel fuel under pressure can have sufficient force to penetrate the skin causing serious personal injury. If inju...

  • Page 20

    O843k 05/03 servicing sp14. Cooling system flushing 1. Flush the cooling system every 600 hours or every 12 months, whichever comes first. 2. Marine sets: a. Remove expansion tank cap and drain engine block. B. Open block drain cock. Remove hose from bottom of heat exchanger tank. C. Pour clean wate...

  • Page 21

    O843k 05/03 glow plugs 1. Each cylinder is supplied with a glow plug which serves to heat the combustion chamber. 2. To check the glow plugs, loosen the current carrying flat wire between the plus-poles of the glow plugs ( figure 18 ). Connect a d.C. Test bulb between the plus-pole of the battery an...

  • Page 22

    O843k 05/03 if you cannot correct problems with these procedures, see your northern lights dealer. 20 troubleshooting dc electrical system problem possible cause recommendation(s) battery will not charge loose or corroded connections • clean and tighten battery connections. Sulfated or worn out batt...

  • Page 23

    O843k 05/03 21 troubleshooting engine problem possible cause recommendation(s) engine hard to start improper starting procedure • see starting section of this manual. Take or will not start special note of bypass switch operation. No fuel • check level of fuel in fuel tank. Low battery output • chec...

  • Page 24

    O843k 05/03 22 troubleshooting engine problem possible cause recommendation(s) engine overheats low coolant level • fill tank or radiator to proper level. • check hoses for loose connections and leaks. Keel cooling tubes • remove paint from tubes. Have been painted (marine) cooling system needs flus...

  • Page 25

    O843k 05/03 23 troubleshooting engine problem possible cause recommendation(s) engine emits black clogged or dirty air cleaner • service air cleaner. Or gray exhaust smoke defective muffler • have dealer check back pressure. (back pressure too high) improper fuel • use correct fuel for temperature. ...

  • Page 26

    O843k 05/03 kilowatt rating prime 10 kw 8 kw rated rpm/frequency 1800/60hz 1500/50hz general information cylinders inline 3 inline 3 displacement 81in 3 (1.33 liters) 81in 3 (1.33 liters) cycles 4 4 bore x stroke 3.3 x 3.2 in (84 x 80 mm) 3.3 x 3.2 in (84 x 80 mm) rotation (facing flywheel) counter-...

  • Page 27

    O843k 05/03 kilowatt rating prime 12 kw 10 kw rated rpm/frequency 1800/60hz 1500/50hz general information cylinders inline 3 inline 3 displacement 91 in 3 (1.5 l) 91 in 3 (1.5 l) cycles 4 4 bore x stroke 3.3 x 3.54 in (84 x 90 mm) 3.3 x 3.54 in (84 x 90 mm) rotation (facing flywheel) counter-clockwi...

  • Page 28

    O843k 05/03 wiring diagrams 26 engine wiring schematic m843 12v dc, drawing b-7915.

  • Page 29

    O843k 05/03 27 wiring diagrams engine wiring schematic nl843nk 12v dc, drawing b-6124d.

  • Page 30

    O843k 05/03 notes 28.