Lull 944E-42 Service Manual - Manual (Page 713)

9.203 Model 644E-42/944E-42 Rev. 6/04
Electrical System
7. Label and disconnect the cab harness (24) and the
two jumper wires (25 and 26) from the wiper motor.
8. Remove the wiper motor (23) and plastic
covers (21 and 22) from the vehicle.
9. Disconnect the two jumper wires (25 and 26) running
from the wiper motor switch (27) to the wiper
motor (23).
10. Carefully pry the rear wiper motor switch (27) from
the rectangular opening in the plastic case.
b. Disassembly
DO NOT disassemble the motor or the wiper motor
switch. The motor and switch are not serviceable.
Replace motor or switch if either are found to be
defective.
c. Cleaning and Drying
Without submerging the motor or switch, clean with an
approved solvent and dry with a clean, lint-free cloth.
d. Inspection and Replacement
1. Inspect the motor terminals for continuity.
2. Replace motor if continuity is not found. (Refer to
Section 9.8.40, “Rear Wiper Circuit &
Troubleshooting.”)
3. Inspect the switch terminals for continuity with the
switch in the OFF and ON positions. (Refer to
Section 9.8.40, “Rear Wiper Circuit &
Troubleshooting.”)
4. Replace the switch if it fails any of the tests in step 3.
e. Installation and Testing
Note: An assistant will be required for the installation of
the Rear Wiper Switch/Motor.
1. Position the rear wiper motor switch (27) over the
rectangular opening in the plastic case, and snap
into position.
2. Install the adapter (29) to the “P” terminal (30) on the
motor (23).
3. Install jumper wire (25) to one of the blades on the
adapter (29) and the other end to the “+”
terminal (31) on the switch (27).
4. Install female end of jumper wire (34) to the other
blade on the adapter (29) on terminal “P” on the
wiper motor.
5. Install the jumper wire (26) to the “H” terminal (32)
on the motor and the other end to the “H”
terminal (33) on the switch (27).
6. From the inside of the cab, hold the plastic case (21),
with the wiper motor (23) installed, up toward the
rear of the cab and install the cab harness
connectors.
7. Assemble the male end of jumper wire (34) to wire
[RWP] (35), green/yellow, from the harness.
8. Assemble the black ground wire (36) under the
phillips screw (37) on the right side of the motor.
Torque to 7.5 lb-ft (10 Nm).
9. Route the wire harness out the opening (28) on the
right side of the front cover (21). Assemble the rear
plastic cover (22) over the wiper motor and snap the
two plastic covers together.
10. Assemble the wiper motor (23) to the rear
window (15). Place the spacer (19) and one flat
washer (17) onto the wiper motor shaft (9) and insert
the wiper shaft with the spacer through the larger
hole in the rear window. Place the rubber grommet
(18) and other flat washer (17), onto the shaft and
secure in place with the hex nut (16). Torque to
2 lb-ft (2,7 Nm).
11. Secure right side of the wiper motor and plastic case
with a phillips head bolt (10), two flat washers (11),
rubber grommet (12) and acorn nut (13). Torque to
2 lb-ft (2,7 Nm).
Front
MM4390
20
21
23
24
25
26
27
28
22
Front
29
MU6180
26
25
23
27
30
32
31
33
34
37
36
35