Lull 944E-42 Service Manual User Manual download pdf (Page 723)

100

101

9.213

Model 644E-42/944E-42 Rev. 6/04

Electrical System

3. Disconnect the wiring connector at the fuel shut-off

solenoid lead (8), then remove the fuel shut-off

solenoid (6) from the fuel injector pump.

4. Remove the two bolts securing the solenoid to the

mounting plate. Remove the nut holding the linkage

to the arm on the fuel injection pump. Save the

hardware for later reuse.

b. Fuel Shut-off Solenoid Disassembly

DO NOT disassemble a fuel shut-off solenoid. Replace a

defective fuel shut-off solenoid with a new part.

c. Fuel Shut-off Solenoid Inspection and

Replacement

Use a 12-volt DC source and ground to test the solenoid.

Energize the solenoid, and watch for the plunger to re-

tract. If the plunger does not retract, replace the fuel shut-

off solenoid with a new part.

d. Fuel Shut-off Solenoid Installation

1. Clean the exterior of the fuel injector pump.

2. Using the hardware removed earlier, install the nut

holding the linkage to the arm on the fuel injection pump.

3. Install the two bolts to secure the solenoid (6) to the

mounting plate. If using new hardware from

Cummins, the threads will be coated with a thread

locking coating. If reusing old bolts or using bolts

purchased elsewhere, apply Loctite

242 (blue) to

the threads. Torque bolts to 18 lb-ft (24 Nm).

4. Connect the wiring connector at the fuel shut-off

solenoid lead (8).

5. If the vehicle has dual batteries, connect both

negative battery cables (11 and 12) to both

batteries.

Connect the lower negative battery cable (11) to the

negative (-) terminal on the lower battery (13). Swing

the upper battery box (16) in and make sure that the

lip (15) on the upper battery box slides below the

knob (14). Secure in place with the knob.

6. Lower and lock engine cover. To release and lower

the engine cover (9) from the fully raised position, lift

up slightly on the cover and push the upper part of

the right gas shock (10) (orange tab) to the left. Line

up the upper part of the shock lock tube with the

lower part of the gas shock and pull the cover down

to the closed position.

7. Lower and lock engine cover. To release and lower

the engine cover (9) from the fully raised position, lift

up slightly on the cover and push the upper part of

the right gas shock (10) (orange tab) to the left. Line

up the upper part of the shock lock tube with the

lower part of the gas shock and pull the cover down

to the closed position.

8. Clear personnel and any obstructions from the area

around the vehicle.

9. Start the engine.

10. If the engine starts, the fuel run solenoid is

functioning.

11. If the engine fails to start, the fuel run solenoid may

have a poor ground connection. Visually check the

wiring at the fuel run solenoid leads and/or check for

continuity with a voltmeter as required.

12. Check for fuel and/or oil leakage around the

solenoid.

MU0650

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Lull 944E-42 Service Manual User Manual Page 723

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