ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
Remove drum (15) and hub (16) as an assembly with grease seal (17), inner bearing (18) and
races (19 and 20). Remove grease seal and inner bearing.
Adjust brakes on rear wheels as loose as possible before removing drum and hub as-
(d) Do not remove lug nut studs (3) unless replacement is necessary.
(2) Cleaning and Inspection.
Clean bearings, castellated nut, cotter pin, grease cap, axle, and drum and hub assembly with
an approved solvent and dry thoroughly.
Visually inspect bearings for corrosion, scored rollers, wear and other damage.
Inspect castellated nut for cracks, corrosion, and stripped or otherwise damaged threads.
Check axle for corrosion, cracks, and stripped or otherwise damaged threads.
Inspect drum and hub assembly for cracks, breaks, corroded or damaged bearing races and oth-
Check rear drum assemblies for deep scores or excessive wear on surface which
mates with brake lining.
Do not drive bearing races from drum assembly. Use a puller instead. Equip-
ment damage could result if caution is not observed.
(3) Repair. Replace any damaged parts.
Bearings and races are matched sets and shall be replaced as such.
(a) If beating races (19 and 20) were removed, press into drum assembly.
(b) Pack inner bearing (18) with Grease Automotive and Artillery (GAA).
(c) Install grease seal (17).
On rear wheel, make sure that brake lining and drum assembly are clean and
free of grease before installing drum assembly. Equipment damage could
result if caution is not observed.
Apply light film of grease to axle and install drum and hub assembly (15 and 16).
Pack outer bearing (14) with grease and install.
Install key washer (13) and castellated nut (12).
Tighten nut until snug, then back off until next cutout is aligned with cotter pin hole in axle.
Check that drum assembly rotates freely.
Install cotter pin (11) and grease cap (10).
Install wheel and tire as outlined in paragraph 5-19a. (3) above.