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FRONT SUSPENSION
3C-7
4. Torque all fasteners to specifications.
BALL JOINT SERVICE
UPPER (FIG. 3C-9)
Removal
1. Raise vehicle on a hoist.
2. Remove the tire and wheel assembly.
3. Remove upper ball stud cotter pin.
4. Loosen, but do not remove, ball stud nut (nut should
be loosened not more than one turn).
5. Install Tool 5-23742-1 between ball studs as shown in
Figure 3C-9 and turn threaded end of tool until the stud is
free of steering knuckle.
NOTE: If a hoist is not used for this operation the lower
control arm must be supported so the chassis spring
cannot force the arm down.
6. Remove the upper ball joint stud nut and allow the
knuckle to swing out of the way.
7. Lift the upper arm up and place a block of wood
between the frame and the arm to act as a support.
Inspection
The upper ball joint is spring loaded internally to keep
the bearing in position under vehicle loads and to provide
wear take-up. Any looseness indicates a worn condition
requiring replacement of the ball joint assembly.
1. Raise front suspension of vehicle by positioning lift
or jacks under each lower control arm between the suspension
spring pocket and the ball joint.
2. Grasp wheel at top and bottom and shake top of wheel
in an%-and-out" motion.
3. Observe for any movement of the steering knuckle
relative to the control arm. This visual observation is
necessary to avoid confusion with other conditions such as
loose wheel bearings. Replace any upper ball joint found to
be loose.
Replacement
Remove the rivets from the upper control arm using a
grinding wheel. Remove the ball joint.
CAUTION: Caremust be usednot to damage the
control ann or ball joint seat.
Installation
CAUTION: See
CAUTION
on page l of this
section regarding the fasteners referred to in steps
1,
4 and 5
1. Install the new bal14joint in the arm and attach with
bolt and nut assemblies provided. Insert the bolts from the
bottom with the nut on top. Torque to specifications.
2. Turn the ball stud cotter pin hole fore and aft.
3. Remove the block of wood from the frame and control
arm.
NOTE: Inspect the tapered hole in the steering knuckle.
Remove any dirt and if any out-of-roundness,
deformation or damage is noted the knuckle MUST be
replaced.
4. Mate the ball stud to the steering knuckle and install
the stud nut. Torque the nut and install a new cotter pin.
NOTE: Never back off nut to align the cotter pin. Also
tighten nut to next slot that lines up with hole in-the stud.
5. Install a lube fitting and lube the joint.
6. Install wheel and tire and lower vehicle to floor.
UPPER CONTROL ARM
MOUNTING BRACKET
UPPER CONTROL ARM
MOUNTING BRACKET
LOWER CONTROL A
AFTER ASM. SPRING MUST PARTIALLY
OVERLAP A T LEAST ONE INSPECTION
DRAIN HOLE BUT MAY NOT FULLY
ABSORBER ASM.
OVERLAP BOTH DRAIN HOLES.
CONTROL ARM
SPRING INSTALLATION
4657
Fig. 3C-8 Coil Spring Positioning
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