JLG G6-23A Service Manual - Manual (Page 112)

Electrical System
9.22 G5-19A, G6-23A
9.11 SWITCHES, SOLENOIDS AND
SENDERS
9.11.1 Ignition Key Switch
a. Ignition Switch Removal
1. Open the engine cover. Allow the engine to cool.
2. Disconnect the battery negative (-) cable from the
battery negative (-) terminal.
3. Remove lower dash panel.
4. Remove the hex nut securing the ignition key switch
to the dash.
5. Reach up under the dash to work the ignition switch
and wiring out of the mounting hole.
6. Disconnect the ignition switch connectors from the
cab harness connectors, and remove the switch
from the machine.
b. Disassembly
DO NOT disassemble the ignition switch. Replace a
defective switch with a new part.
c. Inspection and Replacement
To determine the proper operation of the ignition key
switch, using the following charts, test the wires on the
back of the switch for continuity with an ohmmeter.
Test the ignition key switch for continuity, by checking
from the ignition (#30) wires to each of the following wires
in each switch position. Continuity (X) should be present
as indicated in the following chart:
If all wires do not show proper continuity, replace the
ignition switch.
d. Ignition Switch Installation
1. Connect the ignition key switch to the cab harness
connectors.
2. Reach up and under the dash to work the ignition
switch into the ignition switch-mounting hole on the
lower right side of the dash.
3. Align the ignition switch so that when it is in the OFF
position, the key slot is positioned vertically (straight
up and down). Install the hex nut securing the
ignition switch to the dash. DO NOT overtighten.
4. Install the lower dash panel.
5. Connect the battery negative (-) cable to the battery
negative (-) terminal.
6. Close and secure the engine cover.
9.11.2 Dash Switches
a. Switch Removal
1. Open the engine cover. Allow the engine to cool.
2. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
3. Pull the frame out of the dash, disconnect the
harness connector to the switch in question and
push the switch out of the frame.
b. Disassembly
DO NOT disassemble the dash switch. Replace a
defective switch with a new part.
c. Inspection and Replacement
Inspect the switch terminals for continuity in both the
engaged and disengaged positions. Replace a defective
or faulty switch with a new switch.
d. Switch Installation
1. Connect the switch to the cab harness connector.
2. Position the switch over the rectangular switch bezel
and snap into position.
3. Replace the frame into the dash.
4. Connect the battery negative (-) cable to the battery
negative (-) terminal.
5. Start the machine and check the replaced switch for
proper function.
6. Close and secure the engine cover.
9.11.3 Fuel Level Indicator and Fuel Level
Sender
a. Fuel Level Indicator Testing
1. The fuel level sender wiring harness leads can be
accessed from the top of the fuel tank. Disconnect
the fuel level sender wiring harness leads. With the
help of an assistant, touch both harness leads
together.
2. From the operator’s cab, have the assistant turn the
ignition key switch to the RUN position. DO NOT
Switch Position
Test from #30 wires to: OFF RUN START
#50 Wire X
#15 Wires X X