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Wheel Bearing Lubrication and
Adjustment
Adjust wheel bearings and change grease every 50,000
miles or with each brake lining replacement, which ever
occurs first.
MAINTENANCE AND LUBRICATION
Adjustment
1. Remove the hub cap assembly.
2. Lift the wheel off of the ground.
3. Adjust slack adjuster to eliminate brake drag during
tire/wheel rotation.
4. Remove outer lock nut and inner nut and lock
washer.
5. Tighten the inner adjustment nut to a minimum of 75
ft.-lbs., while rotating wheel to insure proper seating
of the bearings and cups in the wheel hub.
6. Loosen the inner adjustment nut so that the wheel
will turn freely.
7. Retighten the inner adjustment nut to 50 ft.-lbs. while
rotating the wheel, to properly position the bearings
for the final adjustment.
8. Loosen the inner adjustment nut 1/3 turn.
9. Install the spindle nut lock washer so that the dowel
on the inner nut will align with a hole in the lock
washer and the washer tang fits in the spindle
keyway.
10. Install the outer lock nut and tighten to 250-300
ft.-lbs. End-play of .001" to .010" must be present in
the adjusted wheel bearing assembly.
Failure to torque the outer lock nut properly could
cause the wheel to come off during vehicle
operation resulting in property damage or loss of
life.
11. Install the hub cap with a new gasket (See
Table 4-1.)
12. Adjust brakes according to "Brake Adjustment" on
page 4-21.
DANGER
4-27
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