Lull 944E-42 Service Manual - Manual (Page 723)

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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