Non-Demountable Type Drum Replacement; Wheel Stud Replacement; Wheel Bearing Adjustment - GMC G Service Manual

Figure 30 — Installing Oil Seal into Hub
NON-DEMOUNTABLE TYPE DRUM
REPLACEMENT
Construction of the non-demountable type drum and hub
assembly is such that replacement cannot be done with the
hub assembly installed on the vehicle.
M Remove or Disconnect
• Raise the vehicle.
1. Hub and drum assembly. Refer to "Hub and Drum
Assembly Replacement" in this section.
2. Retaining bolts, stud nuts or wheel studs.
• Separate the drum, hub and oil deflector (if
equipped).
• Press the wheel studs out of the drum. Replace
parts as necessary.
H Install or Connect
1. Drum to the hub.
• Make certain the drain holes are aligned.
2. Oil deflector (if equipped) to the drum.
• Apply a light coating of sealing compound to the
oil deflector contact surface.
3. Retaining bolts, stud nuts or wheel studs.
• Press the wheel studs into the drum.

WHEEL STUD REPLACEMENT

Wheel studs are serrated and may also be swaged in
place; however, replacement procedure remains the same
for both types of installation. Press the wheel studs out of
the hub flange, then press new wheel studs into place,
making sure of a tight fit. When replacing all of the wheel
studs be sure that the hub oil deflector (if equipped) is in
position under the wheel stud heads. Refer to figure 31.
J 24428
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WHEEL BEARING ADJUSTMENT

• Make sure the brakes are fully released and do not
drag.
• Check the wheel bearing play by grasping the tire at
the top and pulling and pushing back and forth, or by
using a pry bar under the tire. If the tapered roller
bearings are properly adjusted, movement of the
brake drum in relation to the brake flange plate will be
barely noticeable and the wheel will turn freely. If the
movement is excessive, adjust the bearings.
REAR AXLES WITH DRUM BRAKES
H Remove or Disconnect (Figure 24)
Tool Required:
• Raise the vehicle until the wheel is free to spin.
1. Axle shaft (52). Refer to "Axle Shaft Replacement" in
this section.
2. Retaining ring (56).
3. Key (57).
4. Adjusting nut (58).
| / | Adjust
REAR AXLE 4B1-19
A. Removing Wheel Stud
B. Installing Wheel Stud
Figure 31 — Wheel Stud Replacement
J 2222-C Wheel Bearing Nut Wrench
• Be sure the keyway, threads and adjusting nut
(58) are clean and free of chips, burrs and
shavings.
Tighten
• Adjusting nut (58) to 68 N*m (50 ft. lbs.). Tighten
with J 2222-C (figure 32) while rotating the hub
assembly, making certain the bearing cones are
seated and in contact with the spindle shoulder.
• Back off adjusting nut (58) until loose.
• Rotate nut until nut's inboard end contacts the
bearing cone shoulder. Torque on nut must be
zero or only finger tight.
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