Wheel Bearing Adjustment; Wheel Hub Bolt; Steering Arm, Knuckle And Spindle - GMC G Service Manual

WHEEL BEARING ADJUSTMENT

^ Important (Figures 37 and 38)
• The proper functioning of the front suspension cannot
be maintained unless the front wheel bearings are
correctly adjusted. The bearings must be a slip fit on
the spindle and the inside diameter of the wheel bear­
ing must be lubricated to ensure the bearings will
creep. The spindle nut (150) must have a free-running
fit on the spindle threads.
NOTICE: Never preload the front wheel bear­
ings. Damage can result by the steady thrust on
the roller ends which comes from preloading.
|?l
Adjust
• Raise the vehicle and support it with suitable safety
stands under the lower control arms.
1. Remove the retainer/cap (148).
2. Remove the cotter pin (149).
H O Tighten
• Nut (150) to 16 N*m (12 ft. lbs.) while rotating
the wheel and tire assembly (or the hub/rotor);
this will seat the bearings.
3. Back off the nut (150) one flat.
• If the hole in the spindle lines up with the slot in
the nut, insert the cotter pin (149).
• If they do not line up, back off the nut until they
do — not more than one additional flat.
|t§ i Measure
• Endplay in the hub/rotor should measure between
0.013-0.20 mm (0.0005-0.008 inches) when properly
adjusted.
4. Install the retainer/cap (148).
• Lower the vehicle.

WHEEL HUB BOLT

Remove or Disconnect (Figure 19)
Tools Required:
J 9746-02 Hub/Rotor Support
1. Hub/rotor assembly from the vehicle.
• Refer to "Wheel Hub/Rotor Assembly" in this
section.
NOTICE: Place J 9746-02 between the press bars
and the hub/rotor to protect the rotor surfaces.
2. Wheel hub bolts (153) with a press (figure 19).
• Support the hub/rotor (153) using J 9746-02
and the press bars.
• Do not damage the wheel mounting surface on
the hub/rotor flange.
H Install or Connect (Figure 20)
NOTICE: See "Notice" on page 3C-1 of this
section.
FRONT SUSPENSION 3C-39
1. Wheel hub bolts (153) into the hub/rotor (154).
• Place four washers onto the bolt, then fasten a
nut onto the bolt until the nut bottoms on the
washers (figure 20).
• Tighten the nut until the bolt fully seats into the
hub/rotor (154).
• Remove the nut and washers.
2. Hub/rotor to the vehicle.
• Refer to "Wheel Hub/Rotor Assembly" in this
section.
3. Wheel and tire assembly.
• Lower the vehicle.
STEERING ARM, KNUCKLE
AND SPINDLE
M Remove or Disconnect (Figures 37 and 38)
• Raise the vehicle and support it with suitable safety
stands.
1. Wheel and tire assembly.
2. Caliper (142).
• Refer to HYDRAULIC FOUNDATION BRAKES
(SEC. 5A2).
3. Hub/rotor assembly (154).
• Refer to "Wheel Hub/Rotor Assembly" in this
section.
4. Bolts (146), washers (147) and nuts (129).
5. Anchor plate (145), splash shield (141) and the steer­
ing arm (140).
• Pull the anchor plate and splash shield off the
knuckle. Steering arm hangs by tie rods.
• Bolts (144) and washers (143) to separate the
anchor plate from the splash shield.
• Refer to STEERING LINKAGE (SEC. 3B1) to
separate the steering arm from the tie rod and
pitman arm.
6. Bolts (119) and washers (120).
7. Brake hose bracket (121).
8. Gaskets (123).
9. Caps (122) from the steering knuckle (127).
10. Nut (132) and washer (133).
11. Lock pin (134).
12. King pin (124) from the steering knuckle (127).
• Drive it out using a drift.
• Spacers (126) and bushings (125) will also
come out.
13. Steering knuckle (127) from the axle (157).
14. Dust seal (130), shim (131) and thrust bearing (137).
\+ A Install or Connect (Figures 37 and 38)
NOTICE: For steps 5, 9 and 12, see " Notice" on
page 3C-1 of this section.