JLG G5-18A Service Manual - Manual (Page 43)

4.7 G5-18A/2505
Cab and Covers
4.3.5 Joystick Assembly Replacement
a. Joystick Assembly Removal
1. Park the machine on a firm, level surface, fully
retract the boom, raise 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. Support the boom by installing the lift cylinder lock or
a suitable support.
4. Open the engine covers. Allow the system fluids to
cool.
5. Disconnect the battery negative (-) cable at the
battery negative (-) terminal.
6. Above the hydraulic reservoir, label, disconnect and
cap the hydraulic hoses and electrical connections
(6) to the joystick assembly.
7. Lift the rubber boot (7) from base of the joystick
assembly and remove the four capscrews (8).
8. Remove the joystick assembly.
b. Joystick Assembly Installation
1. Uncap and reconnect the previously labeled
hydraulic hoses to their appropriate locations.
2. Reconnect the electrical connections.
3. Install the four capscrews in the joystick base.
4. Reseat the rubber boot to the joystick base.
5. Remove the lift cylinder lock if previously installed.
6. Connect the battery negative (-) cable to the battery
negative (-) terminal.
7. Test the boom joystick functions:
Test the boom joystick functions to ensure they match the
control pattern on the joystick decal located inside cab.
4.3.6 Windshield Wiper Assembly
Refer to Section 9.9.1, “Windshield Wiper Motor,” for
removal and installation information.
4.3.7 Windshield Washer Assembly
Refer to Section 9.9.3, “Windshield Washer Reservoir
and Pump,” for removal and installation information.
4.3.8 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 covers. 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 front cover from the cab to expose the
heater/defroster element (9).
MY2410
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CAUTION
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. Failure to follow the safety practices
could result in death or serious injury.