157. Front Axle - GMC G Service Manual

3C-40 FRONT SUSPENSION
1. Bushings (125).
• Ream new bushings to 29.982-30.022 mm
(1.1804-1.1820 in.) after installing.
2. Steering knuckle (127).
3. Thrust bearing (137), shim and dust seal.
• Prelube the thrust bearing. Refer to MAINTE­
NANCE AND LUBRICATION (SEC. OB).
4. King pin (124) and the lock pin (134).
• Prelube the king pin.
• Insert the spacers in the proper order.
5. Washer (133) and nut (132).
Tighten
• Nut (132) to 40 N»m (29 ft. lbs.).
6. Gaskets (123).
7. Caps (122) to the steering knuckle (127).
8. Brake hose bracket (121).
9. Washers (120) and bolts (119).
H O Tighten
• Bolts (119) to 7 N»m (5 ft. lbs.).
10. Steering arm (140), splash shield (141) and anchor
plate (145).
11. Bolts (144) and washers (143) to attach splash shield
to anchor plate.
12. Bolts (146), washers (147) and nuts (129) to attach
anchor plate and steering arm to the steering knuckle.
H O Tighten
• Bolts (144) to 16 N»m (12 ft. lbs.).
• Nuts (129) to 312 N*m (230 ft. lbs.).
13. Steering arm (140) to the steering linkage.
• Refer to STEERING LINKAGE (SEC. 3B1).
14. Hub/rotor assembly (154).
• Refer to "Wheel Hub/Rotor Assembly" in this
section.
• Adjust the wheel bearings.
• Refer to "Wheel Bearing Adjustment" in this
section.
15. Caliper (142).
• Refer to HYDRAULIC FOUNDATION BRAKES
(SEC. 5A2).
16. Wheel and tire assembly.
• Lower the vehicle.
• Check the front end alignment and reset as required.
• Refer to FRONT END ALIGNMENT (SEC. 3A).
FRONT AXLE
Remove or Disconnect (Figures 37 through
□
39, 41 and 43)
Tool Required:
J 6627-A Tie Rod Remover
• Raise the vehicle and support it with suitable safety
stands on the frame.
1. Wheel and tire assembly.
• Support the axle with a floor jack to eliminate any load
on the springs.
2. Steering arm, knuckle and spindle.
• Refer to "Steering Arm, Knuckle and Spindle" in
this section.
3. Nut (109) and washer (111).
4. Shock absorber (113) from the axle (157) (figure 39).
5. Nut (115) and washer (114).
6. Stabilizer link (116) from the stabilizer bar (166) (fig­
ure 40).
• Use J 6627-A to separate the stabilizer bar from
the stabilizer link.
7. Nut (136), retainer (117) and insulator (118).
8. Stabilizer link (116) from the axle (157) (figure 41).
• Pull the link free from the axle, making sure not
to lose the other insulator (118) and retainer
(117).
9. Nuts (135), washers (105) and U-bolts (165).
10. Spacer (164) and spring spacer (158).
11. Leaf spring (162) from the axle (175) (figure 43).
12. Steering damper from the axle.
• Refer to STEERING LINKAGE (SEC. 3B1).
• Lower the floor jack and pull the axle clear of the
vehicle.