Published 08-25-09, Control # 077-04 3-13
RT9130E SERVICE MANUAL ELECTRICAL SYSTEM
Ignition and Fan Switch
Removal
1. Disconnect the batteries.
2. Remove the hardware securing the console front cover
and remove the cover.
3. Tag and disconnect the electrical leads from the switch.
4. On the front of the console panel, remove the nut
securing the switch to the panel. If removing the fan
switch, remove the knob from the switch first.
5. Remove the switch from the hole in the panel.
Inspection
1. Visually check the switch for evidence of cracks,
damaged connections, or other damage. Replace
damaged switch as needed.
2. Check wiring for damaged insulation or damaged
connectors. Repair as needed.
3. Perform the following check to determine switch
serviceability.
a. Using an ohmmeter, check for continuity between
the switch terminals with switch at ON or activated
position(s). Ohmmeter should register zero ohms
(continuity).
b. Place switch at OFF or deactivated position.
Ohmmeter should register infinity (no continuity).
c. Replace switch if it fails either part of the
check.Installation.
Installation
1. Place the switch through the hole in the front console
panel and secure to the front of the panel with the nut.
Install the knob on the fan switch.
2. Connect the electrical leads to the switch as tagged
during removal.
3. Position the console front cover on the console and
secure with the attaching hardware.
4. Connect the batteries.
Check
1. Operate the switch. Verify that each of its functions
works. Refer to Section 3 - OPERATING CONTROLS
AND PROCEDURES in the Operator’s Manual.
2. As needed, troubleshoot further any system or circuit
malfunction not corrected by repair or replacement of
the switch or associated wiring.
Windshield Wiper Assembly Replacement
Removal
1. Disconnect the batteries.
2. Tag and disconnect the electrical leads from the motor.
3. Disconnect the washer hose on the wiper arm (also
called the pantograph arm assembly) from the washer
nozzle fitting assembly (Figure 3-11).
NOTE: The nut and washer are part of the pantograph
adapter kit. The nut, washer and sleeve are part of
the pivot shaft kit.
4. Remove the cap nut and washer securing the wiper arm
to the pantograph adapter kit. Remove the cap nut,
washer, and tapered sleeve securing the wiper arm to
the pivot shaft kit.
5. Remove the wiper arm from the pantograph adapter kit
and the pivot shaft kit.
6. Remove the flanged sleeve, nut, and two flat washers
from the pivot shaft kit.
7. Remove the two capscrews and lockwashers securing
the pantograph adapter kit’s adapter to the cab exterior.
Remove the pantograph adapter kit’s adapter and
gasket.
8. Remove attaching hardware to free the windshield wiper
motor bracket from the cab interior. Remove the bracket,
with motor and pivot shaft connected, from the cab.
NOTE: You may have to remove or move other parts to get
the bracket and attached parts around the steering
column. Take care not to damage any parts.
9. Remove the nut to free the wiper motor’s shaft from the
wiper motor kit crank. Remove the three screws and
washers to free the wiper motor from its bracket.
Remove the wiper motor from its bracket. Leave the
other parts attached to the bracket for now.
Inspection
1. Visually check the motor housing for evidence of cracks
or other damage. Check for excessive shaft end play
indicating worn or damaged bearings. Replace motor if
damaged.
2. Inspect the wiper blade for serviceability. Replace wiper
blade when worn.
3. Inspect the wiper arm and parts of the linking component
kits (pantograph adapter kit, pivot shaft kit, wiper motor
kit link and crank, wiper motor bracket) for damage.
Replace as needed.
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