JLG G6-42A Service Manual - Manual (Page 219)

9-55 G6-42A, G9-43A, G10-43A
Electrical System
4. If the fuel level indicator does not move and a faulty
or defective fuel level sender in the fuel tank has
been ruled out, and in addition, wiring and
connectors have been checked and ruled out, the
fuel level indicator is defective and must be
replaced.
5. Check that the ignition terminal has current and that
the fuse in the fuse panel is not blown.
6. Check for broken, shorted, frayed, disconnected or
damaged wiring between the fuel level indicator
wiring at the cab, fuse and relay panel, ignition key
switch, and from the fuel level sender on the fuel
tank through the wiring in the cab.
7. Check the fuel level sender. A defective fuel level
sender in the fuel tank may also prevent the fuel
level indicator from moving. Refer to Section 9.5,
“Electrical System Schematics,” for further
information.
9.11.8 Front and Rear Axle Proximity
Sensors
The sensors used on each axle allow the steering to be
changed to one of three different settings. The sensors
will not allow the change to be completed unless both
axles are in the central location.
Each sensor is mounted in the center of each steer
cylinder.
a. Removal
1. Open engine cover. Allow system fluids to cool.
2. Properly disconnect the battery.
3. Unplug the axle proximity sensor from the wiring
harness.
4. Remove the bolts holding the sensor to the steering
cylinder barrel.
b. Disassembly
1. Inspect the sensor and the wiring harness connector
terminals for continuity. Replace a defective or faulty
sensor with a new sensor.
c. Installation and Testing
1. Install the bolts holding the sensor to the steering
cylinder barrel.
2. Connect the axle proximity sensor to the wiring
harness.
3. Properly connect the battery.
4. Close and secure engine cover.
5. Start the machine, select a steering mode, turn the
steering wheel until the display unit shows the
steering has been "locked" into the selected mode.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
9.12 DISPLAY MONITOR AND GAUGES
9.12.1 Analog Gauges
a. Gauge Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the transmission control lever in
(N) NEUTRAL, engage the park brake and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel.