JLG 723A Service Manual - Manual (Page 51)

4-7 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
Cab and Covers
4.4.7 Joystick Replacement
a. Joystick 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 a Do Not Operate Tag on both the ignition key
switch and steering wheel, stating that the machine
should not be operated.
3. Open the engine covers. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Remove the access cover below the joystick.
6. Loose and remove the four capscrews (5) holding
the joystick assembly (6) in place.
7. Lift the joystick assembly (6) and unplug the three
electrical connections (7).
8. Remove the joystick.
b. Joystick Installation
1. Reconnect the electrical connections (7) and set the
joystick assembly (6) in place.
2. Install the four capscrews in the joystick base.
3. Replace the access cover below the joystick.
4. Properly connect the battery.
5. Start the engine and test the boom joystick for
proper functions.
6. Close and secure the engine cover.
7. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
4.4.8 Windshield Wiper Assembly
(If Equipped)
Refer to Section 9.12.1, “Windshield Wiper Motor (if
equipped),” for removal and installation information.
4.4.9 Windshield Washer Assembly
(If Equipped)
Refer to Section 9.12.3, “Windshield Washer Reservoir
and Pump,” for removal and installation information.
4.4.10 Heater/Air Conditioning System
(If Equipped)
a. Heater Assembly Removal
Note: If machine is equipped with air conditioning,
DO NOT loosen or disconnect any air conditioning hoses
until the air conditioning system has been properly
drained by the local JLG dealer or certified air
conditioning service center.
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 a 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. Properly disconnect the battery.
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.
WARNING
Exhaust system components reach high temperatures
and can cause severe burns. DO NOT come into
contact with hot exhaust system components.
MZ53800
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