TM 9-2320-289-20
8-4.
ROTOR AND WHEEL BEARINGS MAINTENANCE (Con’t).
WARNING
The tapered end of inner wheel bearing assembly must be facing toward the
outboard (cap end) of axle shaft. The tapered end of the outer wheel
bearing assembly 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 personnel.
NOTE
Apply grease to wheel bearing assemblies before installation.
3.
Press 6 or 8 wheel studs (10) into rotor (9) if removed. Drive inner race (20) and outer race (8)
into rotor with soft-faced drift until fully seated. Install inner wheel bearing (19) and new seal (18)
on rotor. Install rotor on spindle (15). Install outer wheel bearing (7).
4.
Position inner adjusting nut (5) with pin facing outward and tighten to 50 lb.-ft. (68 N•m) while
turning rotor (9) to seat wheel bearing assemblies. Loosen inner adjusting nut and tighten to
50 Ib.-ft. (68 N•m). Back off inner adjusting nut far enough to install adjusting lock (6). Position
adjusting lock with hole on inner adjusting nut pin. Install outer adjusting nut (5) and tighten to
160 Ib.-ft. (217 N•m).
• Step 5 only applies to
• Ensure that end of key
NOTE
1984, M1009 trucks.
(3) with threaded hole faces outward.
5.
Position adjusting nut (4) and tighten to 50 Ib.-ft. (68 N•m) while turning rotor (9) to seat wheel
bearing assemblies. Loosen adjusting nut and tighten to 25 Ib.-ft. (34 N•m). Back off adjusting
nut to nearest slot and install key (3), Install snapring (1) and washer (2).
NOTE
Step 6 only applies to 1985-87, M1009 trucks.
6.
Position adjusting nut (23) and tighten to 50 Ib.-ft. (68 N•m) while turning rotor (9) to seat wheel
bearing assemblies. Loosen adjusting nut and tighten to 35 Ib.-ft. (47 N•m). Back off adjusting
nut 3/8 turn. Install ring (22) with tang alined to slot on spindle (15) and hole alined to pin on
adjusting nut. Install locking nut (21). Tighten locking nut to 160 Ib.-ft. (217 N•m). Install
snapring (1) and washer (2).
FOLLOW-ON TASKS:
• lnstall front locking hub. (See paragraph 8-3)
• Install caliper. (See paragraph 7-11)
Change 2
8-9
