JLG 4017PS Service Manual - Manual (Page 190)

Electrical System
9-32 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
9.11 WINDOW WIPER/WASHER
WINDSHIELD WIPER MOTOR
9.11.1 Windshield Wiper Motor
a. Removal
1. Park the machine on a firm, level surface, level the
machine, 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 cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Remove the cab cover.
6. Disconnect the cab harness connectors from the
wiper motor.
7. Disconnect the reservoir hose attached to the wiper
motor (3).
8. Remove the linkage attached to the wiper motor.
9. Loosen and remove the bolts holding the wiper
motor to the mounting bracket.
Note: Retain all hardware removed from the wiper
assembly for possible reuse on the replacement motor
housing.
10. Remove the motor from the front of the cab.
b. Disassembly
DO NOT disassemble the motor. The motor is not
serviceable. Replace motor if found to be defective.
c. Inspection and Replacement
Inspect the motor terminals for continuity. Replace motor
if continuity is not found.
d. Installation and Testing
1. Align motor with the mounting holes and bolt the
motor to the mounting bracket.
2. Connect the wiper linkage to the wiper motor shaft.
Note: Align the wiper linkage arm with the flat on the
motor shaft to ensure wiper stroke covers window area,
and it does not swipe past the glass area.
3. Connect the reservoir hose to the wiper motor.
4. Connect the cab harness connectors to windshield
wiper motor connectors.
5. Turn ignition key switch to the RUN position, and
operate windshield wiper in both LOW and HIGH
speeds to ensure proper operation and that correct
wiper travel is achieved.
6. Install the cab cover.
7. Properly connect the battery.
8. Close and secure the engine cover.
9. Remove the Do Not Operate Tag from the ignition
key switch and the steering wheel.
9.11.2 Rear and Roof Window Wiper Motor
a. Removal
1. Park the machine on a firm, level surface, level the
machine, 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 cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Remove the cab ceiling cover to gain access to the
wiper motor.
6. Disconnect the cab harness connector(s) from the
wiper motor.
MAM0340
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