JLG 723A Service Manual - Manual (Page 139)

9.31 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
Electrical System
b. Alternator Installation
1. Position the alternator and align with the upper
alternator mount on the engine bracket. Insert the
upper mounting hardware (1) through the alternator
mount. DO NOT tighten completely at this time.
2. Align the lower alternator mount hole with the lower
mounting bracket on the engine, and insert the lower
mounting hardware (2) through the alternator mount.
DO NOT tighten completely at this time.
3. Attach the fan drive belt to the alternator.
4. Turn the belt tensioning adjustment bolt (4)
clockwise to loosen the fan drive belt. Check for
proper fan belt deflection.
5. Tighten the belt tensioning adjustment bolt jam nut
(3).
6. Reattach the previously labeled electrical wires to
the alternator.
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.
9.12 WINDOW WIPER/WASHER
9.12.1 Windshield Wiper Motor
(if equipped)
a. Removal
Note: It may be necessary to remove several hydraulic
hoses from under the dash in order to remove and install
the wiper motor housing.
1. Park the machine on a firm, level surface with the
machine level, retract and level the boom. Place the
transmission control lever in the (N) NEUTRAL
position and engage the parking brake. 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. Allow the engine and all system fluids to cool.
4. Properly disconnect the battery.
5. Remove the lower access panel below the
instrument panel.
6. Disconnect the right side defroster hose from dash
panel hose connector.
7. Disconnect the cab harness connectors from the
wiper motor.
8. Remove the linkage attached to the wiper motor.
9. Loosen and remove the four 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 inside 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. Install all required hardware to the motor assembly.
2. Align motor with the mounting holes and bolt the
motor to the mounting bracket.
3. 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.
4. Connect the cab harness connectors to windshield
wiper motor connectors.
5. Properly connect the battery.
6. Close and secure the engine cover.
MZ5640