DRUM, HUB, AND WHEEL BEARINGS MAINTENANCE (Cont).
The tapered end of inner wheel bearing assembly (15) must be facing
toward the outboard (cap end) of axle shaft (4 or 11). The tapered end of
the outer wheel bearing assembly (17) must be facing toward the inboard
(splined end) of the axle shaft. Failure to follow this warning may force
wheel off truck during operation, causing serious injury or death to
If installing drum (1) on M1009, perform step 4.
If installing hub (8), drum (9), and wheel bearings (15 or 17) on all
except M1009, perform steps 1-3 as required.
Apply grease to wheel bearing assemblies (15 or 17) before installation.
(See TM 9-214)
. Before adjusting bearings (15 or 17), ensure that brakes are fully
released and do not drag.
Aline hub (8) and drum (9) stud holes. Press 8 wheel studs (10) into hub and drum with arbor
press. Hub must seat tightly against drum.
Install outer wheel bearing assembly (17) in hub (8) past snapring slot, Install snapring (16) in
slot. Tap outer wheel bearing assembly to seat on ring. Install inner wheel bearing assembly
(15) and new seal (14) in hub. Position hub and drum assembly on spindle (11).