Steering Knuckle - GMC G Service Manual

3C-18 FRONT SUSPENSION
M Install or Connect (Figure 20)
NOTICE: See "Notice" on page 3C-1 of this
section.
1. Wheel hub bolts (74) into the hub/rotor (81).
• Place four washers onto the bolt, then tighten a
nut onto the bolt until the bolt fully seats into the
hub/rotor (81) (figure 20).
• 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.
Figure 20 — Installing the Hub Bolts

STEERING KNUCKLE

M Remove or Disconnect (Figures 5 through
.. 13, 21 and 22)
Tool Required:
J 23742 Ball Joint Separator
1. Wheel and tire assembly.
] Important
• It is recommended that the vehicle be raised and sup­
ported as on a twin-post hoist so that the front coil
spring remains compressed, yet the wheel and steer­
ing knuckle assembly remain accessible. If a frame
hoist is used, support the lower control arm with an
adjustable jackstand to safely retain the spring in its
curb height position.
2. Caliper.
• Refer to HYDRAULIC FOUNDATION BRAKES
(SEC. 5A2).
3. Hub/rotor (81).
• Refer to "Wheel Hub/Rotor Assembly" in this
section.
4. Bolts (83) and washers (84).
5. Gaskets (85).
6. Splash shield (71).
7. Steering knuckle from the tie rod end.
• Refer to STEERING LINKAGE (SEC. 3B1).
8. Steering knuckle (31) from the upper ball joint (13).
• Position a floor jack under the lower control arm
(36) near the spring seat.
• Raise the jack until it just supports the lower
control arm.
• Use J 23742 to break the upper ball joint free of
the steering knuckle (figure 21).
• Raise the upper control arm (28) to disengage
the upper ball joint from the steering knuckle.
] Important
• Floor jack must remain under the lower control
arm spring seat during removal and installation
to retain the spring and the lower control arm in
position.
9. Steering knuckle (31) from the lower ball joint (37).
• Use J 23742 to break the lower ball joint free
from the steering knuckle (figure 22).
• Lift the steering knuckle off the lower ball joint.
3 Inspect
1. Tapered holes in the steering knuckle that attach to
the ball joints and the tie rod end.
• Remove any dirt.
• If any tapered hole is out of round, deformed, or
damaged in any way, replace the steering
knuckle (31).
2. Spindle for wear or damage.
• The steering knuckle (31) must be replaced if
the spindle is damaged or worn.