Hub and Drum Assembly (XM1063 Only)

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TM-9-2330-380-14-P Semitrailer Van: Electronic Tactical 12-Ton 4-Wheel XM1063 (NSN 2330-01-224-9244) and M129A4 (NSN 2330-01-372-5642) Manual

Cleaning and inspection

TM 9-2330-380-14&P

4-52. Hub and Drum Assembly (XM1063 Only)

This task covers:

a. Removal

b. Cleaningandinspection

c. Installationandadjustmentofwheelbearings

Initial Setup:

Tools/Test Equipment:

EquipmentConditions:

General mechanic's tool kit (item 01, Appendix B)

Wheels removed (para. 3-4).

Automotive shop set (item2, Appendix B)

Wheel bearing wrench (item 3, Appendix B)

Jack stand in place under axle.

Materials/Supplies:

Dry cleaning solvent (item 3, Appendix E)

Brush (item 15, Appendix E)

Grease (item 5, Appendix E)

a. Removal

1. Remove three screws (1) and brake drum (2).

2. Remove six screws (13), washers (14), hub cap (15) and gasket (16). Discard gasket.

3. Remove 3-1/4 inch outer bearing nut (12), keyed washer (11) and 3-7/8 inch inner nut (10).

4. Remove outer bearing cone (9) and hub (4).

5. Remove oil seal (7), inner bearing cone (8), inner bearing cup (6) and outer bearing cup (3).

6. Remove serrated bolts (5), if defective.