Columbia ParCar Expediter EX21-24A, Service Manual

Page: 54 / 94

Section 7 - Rear Wheels,
Rear Suspension & Axle Assembly
REMOVING REAR AXLE
1. Before raising vehicle, with wheels on the ground, break
loose the lug nuts.
2. Raise the vehicle and engage the brake.
3. Remove lug nuts and remove rear wheel/tire assemblies.
Remove and discard cotter pin and axle
nut. Release brake and remove washer, spacer and rear
Figure 7-2
wheel hub (Figure 7-2). Repeat
for other side.
5. Remove the traction motor as described in Section
10Traction Drive System . Remove U-bolt securing rear
axle to traction drive motor mounting plate.
6. See Figure 7-3. Remove cotter pins and clevis pins.
Disconnect brake strips from brake assemblies on the
rear axle. Remove screws and rear brake drums.
7. Remove nuts, washers and screws securing rear axle to
rear frame.
Rear axle is heavy and awkward to move. Get help
lifting and removing axle to prevent possible personal
injury.
GENERAL
The rear axle is a precision assembly and any repair or
replacement of parts must be done with great care in a clean
environment.
Before attempting to perform any axle service, read and
understand all the procedures in this section.
●
Handle all gears with extreme care.
●
Axle assembly should be
degreased prior to disassembly.
●
Dirt is an abrasive and will cause premature wear of
bearings and other parts. A small wash tank for cleaning
parts should be close by when disassembling the axle
assembly.
●
Use soft, clean, lint-free towels to dry components before
cleaning.
●
Parts should be cleaned with emulsion cleaners or
petroleum based cleaners.
Do not use gasoline as a cleaner.
NOTICE: Bearings should not be dried by spinning with
compressed air. This can damage mating surfaces due
to lack of lubrication.
●
After drying, parts should be lightly coated with SAE 30
weight oil to prevent corrosion damage. If parts are to be
stored for a prolonged period of time, they should be
wrapped in newspaper and plastic.
To perform this service, raise vehicle using floor jack
and safely support it with jack stands positioned under
main frame tubes. See Section 3 Maintenance - Lifting
Instructions.
Figure 7 - 3
on the previous page.