Lull 944E-42 Service Manual User Manual
Page 709
9.199
Model 644E-42/944E-42
Rev. 6/04
Electrical System
8. Lift the tab (19) on the top plastic cover and unsnap
the two plastic covers (20) of the plastic case to
expose the skylight wiper motor (21).
9. Label and disconnect the cab harness (22) from the
wiper motor.
10. Remove the wiper motor from the vehicle.
b. Disassembly
DO NOT disassemble the motor. The motor is not
serviceable. Replace motor if found to be defective.
c. Cleaning and Drying
Without submerging the motor, clean the motor with an
approved solvent and dry with a clean, lint-free cloth.
d. Inspection and Replacement
Inspect the motor terminals for continuity. Replace motor
if continuity is not found. (Refer to Section 9.8.39,
“Skylight Wiper/Washer, Rear Washer Circuit &
Troubleshooting.”)
e. Installation and Testing
Note: An assistant will be required for the installation of
the skylight wiper motor.
1. Hold wiper motor up toward cab top and install the
cab harness connectors.
2. Attach the cab harness connectors to the terminals
on the wiper motor (24). Assemble the wire
[TW2] (25), purple/yellow, from the harness to
terminal “H” on the wiper motor. Assemble the wire
[TW3] (26), white/brown stripe, from the harness to
terminal “P” on the wiper motor. Assemble the black
ground wire, [TWG2] (27), to the bolt on the left side
of the motor. Tighten securely.
3. Assemble the two plastic covers (20) onto the wiper
motor. Place the wires out of the opening (23) on the
front side of the lower cover and snap the two halves
together.
4. Assemble the wiper motor to the roof. Place the
metal washer (18) and rubber grommet (17) onto the
wiper motor shaft (9) and insert the wiper shaft up
through the hole in the roof. Secure in place with the
nut (18). Finger tighten the nut.
5. Secure the tab of the plastic case (15) using two
screws (12) and three flat washers (13) and acorn
nut (14). Torque to 5 - 9 lb-ft (7 - 12,5 Nm).
6. Torque motor shaft nut (16) to 3.6 1b-ft (5 Nm).
7. Assemble the skylight wiper arm (8) to the skylight
wiper motor shaft (9) with the wiper blade on the
right side of the skylight window. The wiper blade
should be parallel to the edge of the window. Push
the wiper arm all the way onto the motor shaft.
Assemble the washer hose (10) onto the hose
connection on the top hose fitting (11). Be sure to
leave enough hose to allow for movement of the
wiper arm.
19
20
21
22
MU6140
Front
23
H
P
Front
24
25
27
MU6130
26