JLG G6-23A Service Manual - Manual (Page 39)

4.7 G5-19A, G6-23A
Cab and Covers
4.3.6 Joystick Assembly Replacement
a. Joystick Assembly Removal
1. Park the machine on a firm, level surface, 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 an Do Not Operate Tag on both the ignition
key switch and steering wheel, stating that the
machine should not be operated.
3. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
4. Remove the two capscrews. Remove the bottom
cover.
5. Disconnect the electrical connections and remove
the four self-tapping screws from the bottom of the
joystick assembly.
6. Remove the joystick assembly.
b. Joystick Assembly Installation
1. Set the joystick assembly into the armrest support.
2. Install the four self-tapping screws. Connect the
electrical connections.
3. Connect the battery negative (-) cable to the battery
negative (-) terminal.
4. Close and secure the engine cover.
5. Test the boom joystick functions:
Test the boom joystick functions to ensure they match the
control pattern on the joystick decal located inside cab.
6. Install the bottom cover and secure using two lens-
head capscrews.
4.3.7 Windshield Wiper Assembly
Refer to Section 9.9.1, “Windshield Wiper Motor,” for
removal and installation information.
4.3.8 Windshield Washer Assembly
Refer to Section 9.9.2, “Windshield Washer Reservoir
and Pump,” for removal and installation information.
4.3.9 Heater/Defroster System
a. Heater Assembly Removal
1. Park the machine on a firm, level surface, 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 an Do Not Operate Tag on both the ignition
key switch and the steering wheel, stating that the
machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
5. Place a suitable container beneath the radiator drain
plug or petcock. Slowly turn the cap on the coolant
overflow bottle to allow any pressure to escape.
Remove the overflow bottle cap.
6. Place a funnel at the base of the radiator to channel
the drained coolant into the container. Open the
radiator drain plug or petcock and allow the coolant
to drain. Replace the drain plug, or close the
petcock.
7. Transfer the coolant into a suitable, covered
container, and label as "Used Coolant". Dispose of
used coolant at an approved recycling facility.
Note: Label all hoses to ensure correct installation.
8. Remove the seat from the cab to expose the heater/
defroster element (1).
9. Loosen the hose clamps and disconnect the two
heater hoses.
WARNING:
The cooling system is
under pressure, and escaping coolant can
cause severe burns and eye injury. To prevent
personal injury, NEVER remove the radiator
cap while the cooling system is hot. Wear
safety glasses. Turn the radiator cap to the first
stop and allow pressure to escape before
removing the cap completely.