REAR PLANETARY WHEEL ENDS REPLACEMENT - continued

TM 10-3930-673-34

9-6. REAR PLANETARY WHEEL ENDS REPLACEMENT (CONT)

TR00461

(4)

Preload wheel bearings.

(a)

Seat bearings and related components by tightening the nut (15) to 100 lb-ft (135.58 Nm)

while wheel hub (2) is rotated in both directions.

(b)

Back off nut (15) to relieve preload on bearings. Torque on nut should be 0 lb-ft (0 Nm).

(c)

Use fabricated hub drag tool and a torque wrench to check rolling torque while hub is rotating

at a steady rate (not starting torque). Record torque.

(d)

Tighten nut (15) and check hub rolling torque again. The increase in rolling torque from zero

preload should be 3 - 5 lb-ft (4.07 - 6.78 Nm) for new bearings.

NOTE

If bearings are to be reused, the increase in rolling torque should be 1.5 - 2.5 lb-ft

(2.03 - 3.39 Nm).

9-38