TM 9-2320-387-24-2
21-6. GEARED HUB REPAIR (Cont’d)
NOTE
If backlash between drive and driven gears is more than 0.018 in.
(0.46 mm), both gears must be replaced. Worn or damaged
bearings may invalidate backlash measurements.
Backlash mesurement must be taken perpendicular to face of gear
tooth.
3.
Mount dial indicator on geared hub (4) and index indicator to register from one tooth of drive
gear (7). Move drive gear (7) back and forth while holding driven gear (6) stationary to read
backlash.
4.
5.
6.
Remove four capscrews (81, washers (91, and steering arm cover (10) from geared hub (4).
Remove retaining ring (12) and seal (11) from steering arm cover (10).
Remove retaining ring (131, nut retainer (14), nut (15), and keyed washer (16) from spindle (20).
NOTE
7.
8.
It may be necessary to lightly tap threaded end of spindle to release
it from the inner spindle bearing.
Lift geared hub (4) off spindle (20).
Remove inner bearing (171, inner bearing spindle spacer (181, and driven gear (6) from geared
hub (4).
9.
Remove outer bearing spacer (19) from spindle (20).
