Jacobsen 2WD Parts & Maintenance Manual - Caution

4    MAINTENANCE

GB-20

4.13 HYDRAULIC FILTERS ______________________________________________________

The hydraulic system is protected by two 10 micron filters; a

charge filter (B)  and return line filter (A). Flow though the

filters is monitored during operation. When pressure drop

across the filters is too high the hydraulic oil filter warning

light will come on. To ensure continued protection to the

hydraulic system, replace both filters as soon as possible

after light comes on. 

Note:  During cold weather the warning light may come on

until oil has warmed up to operating temperature. Wait until

oil has warmed up and light goes out before operating

tractor.

To replace hydraulic filters:

1.

Remove the old filters.

2.

Install new filters. Hand tighten only.

3.

Operate engine at idle speed with hydraulic system in

neutral for five minutes. The oil level alarm may sound

during this time.

4.

Check hydraulic oil level in reservoir and fill to full mark

on dipstick. 

Figure 4B

4.14 ELECTRICAL SYSTEM _____________________________________________________

General precautions that can be taken to reduce electrical

problems are listed below.

1.

Make certain all terminals and connections are clean

and properly secured.

2.

Check the interlock system, fuses and circuit breakers

regularly.

If the interlock does not function properly and the

problem cannot be corrected, contact an authorized

Jacobsen Dealer.

3.

Keep the wire harness and all individual wires away

from moving parts to prevent damage. 

4.

Make sure the seat switch harness is connected to the

main wire harness.

5.

Check the battery and battery charging circuit.

6.

Do not wash or pressure spray around electrical

connections and components.

The electrical system is monitored and controlled by the

electronic controller (C) located behind the operator’s area.

The controller is equipped with two banks of LED’s which

can be used when troubleshooting the electrical system, see

Section 5.2

CIrcuits are protected by a circuit breaker, fuses and relays

mounted next to the controller.

Figure 4C

B

A

LF018

CAUTION

Always turn the ignition switch off and remove the

negative battery cable (Black) before inspecting or

working on the electrical system.

!

C

FUSES

F1   20 A  ALTERNATOR, GAUGES, SWITCHES

F2

20 A  LIGHTS

RELAYS

K10

GLOW PLUG

K11

STARTER

F1

F2

K10  K11

50A 

CIRCUIT BREAKER

LF019