JLG G6-23A Service Manual - Manual (Page 114)

Electrical System
9.24 G5-19A, G6-23A
in a shorted wire, improper-running engine, improper
or low coolant, obstructed or faulty radiator, coolant
pump, loose fan belt, defective instrument display,
etc.
5. Close and secure the engine cover.
9.11.6 Fuel Shut-off Solenoid
The fuel shut-off solenoid (2) is located on the top of the
engine near the fuel filter.
a. Fuel Shut-off Solenoid Removal
1. Open the engine cover. Allow engine to cool.
2. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
3. Disconnect the wiring connector at the fuel shut-off
solenoid lead.
4. Remove the fuel shut-off solenoid from the engine.
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
retract. If the plunger does not retract, replace the fuel
shut-off solenoid with a new solenoid.
d. Fuel Shut-off Solenoid Installation
1. Clean the exterior of the fuel shut-off solenoid
engine location.
2. Install the fuel shut-off solenoid on the engine. Do
Not Over Tighten.
3. Connect the wiring connector at the fuel shut-off
solenoid lead.
4. Connect the battery negative (-) cable to the battery
negative (-) terminal.
5. Start the engine. If the engine starts, the fuel shut-off
solenoid is functioning. If the engine fails to start, the
fuel shut-off solenoid may have a poor ground
connection. Visually check the wiring at the fuel
shut-off solenoid leads and/or check for continuity
with a voltmeter as required.
6. Check for fuel and/or oil leakage around the solenoid.
7. Close and secure the engine cover.
9.11.7 Oil Pressure Sender
The oil pressure sender (3) is located on the engine near
the oil filter.
a. Oil Pressure Sender Removal
1. Open the engine cover. Allow the engine to cool.
2. Disconnect the battery negative (-) cable from the
battery negative (-) terminal.
3. Disconnect the wiring connector at the oil pressure
sender lead.
4. The oil pressure sender is threaded into the engine.
Remove the sender.
b. Oil Pressure Sender Inspection and Replacement
Inspect the sender and the wiring harness connector
terminals for continuity. Replace a defective or faulty
sender with a new part.
c. Oil Pressure Sender Installation and Testing
1. Thread the oil pressure sender into the engine
housing snugly, then connect the sender connector
to the wiring harness connector.
2. Connect the battery negative (-) cable to the battery
negative (-) terminal.
3. Check for proper fluid level.
4. Start the engine, and observe the operator’s display
for warning indication. If the sender is not defective,
the problem could be elsewhere; possibly in a
shorted wire, improper-running engine, low oil,
obstructed or faulty oil pump, defective instrument
display.
5. Close and secure the engine cover.