JLG G12-55A Service Manual - Manual (Page 162)

Electrical System
9-20 G10-55A, G12-55A
9.10 DISPLAY MONITOR AND GAUGES
9.10.1 Gauges
Note: Error codes will appear in the display area (11) of
the gauge (13). Refer to Section 9.12, “SAE Diagnostic
Trouble and Fault Codes”
a. Gauge Removal
1. Park machine on a firm, level surface, level machine,
fully retract boom, lower boom, place transmission
control lever in (N) NEUTRAL, engage park brake
and shut engine OFF.
2. Place a Do Not Operate Tag on both ignition key
switch and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect the batteries.
5. Remove the screws (12) securing the dash panel.
6. Label and disconnect the wires from the gauge,
remove the gauge bracket.
7. Pull the gauge (13) out from the dash.
b. Disassembly
DO NOT disassemble the gauge. The gauge is not
serviceable. Replace the gauge if found to be defective.
c. Gauge Installation and Testing
1. Install gauge (13) in dash. Install gauge bracket.
2. Connect previously labeled wires to the gauge.
3. Install panel with previously used hardware (12).
4. Properly connect the batteries.
5. Turn ignition to ON position to check gauge values.
6. Close and secure the engine cover.
7. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
250
150 50
E F
1/2
1 3
2 4
P
P
MY7340
12
13
11