4 Cam Brake Removal and Disassembly
10 ArvinMeritor Maintenance Manual MM-0361 (Revised 04-10)
4 Cam Brake Removal an d Disassembly
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in
this publication. They provide information that can help prevent
serious personal injury, damage to components, or both.
To prevent serious eye injury, always wear safe eye protection
when you perform vehicle maintenance or service.
Use a brass or synthetic mallet for assembly and disassembly
procedures. Do not hit steel parts with a steel hammer. Pieces
of a part can break off. Serious personal injury and damage to
components can result.
Observe all warnings and cautions provided by the press
manufacturer to avoid damage to components and serious
Front Drive Steer Axle Wheel Ends Equipped
with Cam Brakes
NOTE: When servicing drive shafts only, you may remove the
steering knuckle as an assembly. To remove the steering knuckle as
앫Refer to the steering knuckle removal procedure in this section.
앫After you remove the steering knuckle, proceed to the procedure
in this section to service the drive shafts.
Wheels, Drums and Hubs from the Axle
Park the vehicle on a level surface. Block the wheels to
prevent the vehicle from moving. Support the vehicle with
safety stands. Do not work under a vehicle supported only by
jacks. Jacks can slip and fall over. Serious personal injury and
damage to components can result.
1. Park the vehicle on a level surface. Block the wheels to keep
the vehicle from moving.
2. Use a jack to raise the vehicle so that the wheels to be serviced
are off the ground. Support the vehicle with safety stands.
3. Retract the brake linings so that the drums will clear the
4. Remove the automatic slack adjuster. Refer to Maintenance
Manual 4B, Automatic Slack Adjusters. To obtain this
publication, refer to the Service Notes page on the front inside
cover of this manual.
5. If the steering universal joint is to be removed from the
housing, remove the oil drain plug and drain the lubricant from
NOTE: It is not necessary to remove the rim and tire at this time.
6. Remove the capscrews and washers that connect the drive
flange to the wheel hub. The hubcap does not need to be
removed from the drive flange unless it is damaged.
7. If necessary, remove the hubcap. Use a puller to remove the
drive flange. Figure 4.2.