Section 3: Removal And Disassembly; Removal; Hub Assembly - Meritor PreSet Maintenance Manual

Hazard Alert Messages
3 Removal and Disassembly
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.
WARNING
To prevent serious eye injury, always wear safe eye protection
when you perform vehicle maintenance or service.
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.

Removal

Hub Assembly

1. Wear safe eye protection.
2. Park the vehicle on a level surface. Block the wheels to prevent
the vehicle from moving. Set the parking brake.
3. Raise the axle until the tires are off the floor.
4. Place safety stands under the trailer frame or under each axle
spring seat. Figure 3.1.
Figure 3.1
Figure 3.1
5. Remove the tire and wheel assembly, using procedures
specified by the wheel manufacturer. Figure 3.2.
Figure 3.2
Figure 3.2
Before you service a spring chamber, carefully follow the
manufacturer's instructions to compress and lock the spring to
completely release the brake. Verify that no air pressure
remains in the service chamber before you proceed. Sudden
release of compressed air can cause serious personal injury
and damage to components.
6.
Figure 3.3
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Figure 3.3
7.
3 Removal and Disassembly
WARNING
If the axle is equipped with spring brake chambers, carefully
compress and lock the springs so that they cannot actuate.
Figure 3.3.
For drum brake applications, remove the brake drum. Support
the drum during the removal process to prevent damage to the
axle spindle threads.
Meritor Maintenance Manual MM-0637 (Revised 07-12)
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