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See Figures 1, 2 and 3
The following procedure requires the use of a ball joint separator tool such as J-23742 or equivalent.
CAUTION With components unbolted, the jackstand is holding the lower control arm in place against the coil spring. Make sure the jackstand is firmly positioned and cannot move, or personal injury could result.
Fig. Fig. 1: Upper control arm mounting-2WD vehicles
Fig. Fig. 2: Exploded view of the upper control arm and bushing components
After separating the steering knuckle from the upper ball joint, be sure to support the steering knuckle/hub assembly to prevent damaging the brake hose.
Before and during removal of the control arm-to-frame nuts and bolts, note the location of any shims.
Fig. Fig. 3: Upper control arm bushing installation-2WD vehicles
On most vehicles, the left upper control arm shaft must have the depression facing inboard.
When installing the cotter pin, never loosen the castle nut to expose the cotter pin hole.
See Figures 4, 5 and 6
The 4WD vehicles covered by this information do not use shims to adjust the front wheel alignment. Instead, the upper control arm bolts are equipped with cams, which are rotated to achieve caster and camber adjustments. In order to preserve adjustment and ease installation, matchmark the cams to the control arm before removal. If the control arm is being replaced, transfer the alignment marks to the new component before installation.
FIG : Fig. 4: Exploded view of the upper control arm mounting-4WD vehicles
Fig. Fig. 5: Matchmark the cams to the control arm before removal.
Fig. Fig. 6: Loosen the end retaining nuts from the upper control arm bolts
When installing the cotter pin, never loosen the castle nut to expose the cotter pin hole, but DO NOT tighten more than an additional1/6turn.