Power Train Disassembly & Assembly
4. Remove the wheel nuts and dual tire/rim
assemblies from both wheel ends.
5. Rotate the wheel ends so the magnetic drain plug
(2) in the planetary spider (3) is at the bottom.
Remove the plug. Drain and discard the lubricant
from both wheel ends.
6. If necessary, remove the magnetic drain plug from
the bottom of the axle housing. Drain and discard
the lubricant from the carrier center section.
When you work on a spring chamber, carefully
follow the service instructions of the chamber
manufacturer. Sudden release of a compressed
spring can cause serious personal injury.
7. If the brake air chamber assembly has a spring
chamber unit, carefully cage and lock the spring to
prevent the spring from activating during
disassembly.
8. Adjust the brake manual slack adjuster to retract
the brake shoes and produce clearance between
the lining and the brake drum (1).
To prevent serious personal injury and possible
damage to components, be very careful when
using lifting devices during service and
maintenance procedures.
•
Inspect to make sure that neither lifting strap is
damaged.
•
Do not subject lifting straps to any shock or drop
loading.
9. Use a lifting device to support the brake drum (1).
10. Install capscrews into the threaded holes in the
brake drum. Gradually tighten the capscrews in
equal amounts to push the drum off the pilot
surface of the planetary spider (3).
11. With the lifting device, carefully remove the brake
drum.
12. Remove the five slotted head screws (5) that
attach the planetary spider (3) to the wheel hub
(23).
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