TM 5-4220-233-14
Figure 4-26. Inspect Hub and Drum Assembly.
b.
Inspect.
(1) Remove plug (1) from hub (2). Remove and discard O-ring (3) from plug (1).
(2) Press seal (4) and wheel bearing (5) out of backside of hub. Discard seal.
(3) Clean and inspect wheel bearings (5 and 6) in accordance with TM 9-214. Replace if necessary.
(4) Clean and inspect assembled hub drum wheel studs (7), bearing cups (races) (8) as prescribed in
paragraphs 4-15 and 4-16.
NOTE
If brake drum is worn in area where shoes ride refer to Direct Support (DS)
maintenance to rework brake drum If wheel studs, hub, or bearing races are
damaged refer to DS maintenance for repair.
(5) Repair, or rework, hub (2) and/or drum as necessary.
(6) After cleaning apply a liberal coat of gear oil (item 12, Appendix D) to bearing cups in hub (2) and to
both wheel bearings.
(7) Insert rear wheel bearing (5) into hub (2) and press new seal (4) into hub ensuring oil seal is seated
properly.
(8) Install new O-ring (3) onto plug (1) and thread plug into hub.
(9) Temporarily insert front wheel bearing into hub for later assembly.
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