Upper Control Arm

REMOVAL

Removal Service Point
[A] Upper Arm Ball Joint And Knuckle Disconnection





CAUTION:
1. Use the special tool to loosen the tie rod end mounting nut. Only loosen the nut; do not remove it from the ball joint.
2. Support the special tool with a cord, etc. to prevent it from coming off.

INSTALLATION

Installation Service Point
]A[ Upper Arm Shaft Assembly Installation





Install the upper arm shaft assembly at the angle shown in the illustration.





NOTE: If the upper arm shaft is installed at the above-mentioned angle, the reference dimension is determined as follows;

INSPECTION
- Check the bushings for wear and deterioration.
- Check the upper arm for bends or damage.
- Check all bolts for condition and straightness.

Ball Joint Breakaway Torque Check





1. After shaking the ball joint stud several times, install the nut to the stud and use the special tool to measure the breakaway torque of the ball joint.

Standard value: 0.3 - 2.5 Nm (3 - 22 inch lbs.)

2. When the measured value exceeds the standard value, replace the upper arm assembly.
3. When the measured value is lower than the standard value, check that the ball joint turns smoothly without excessive play. If so, it is possible to use that ball joint.

Ball Joint Dust Cover Check
1. Check the dust cover for cracks or damage by pushing it with finger.
2. When dust cover is cracked or damaged, replace the upper arm assembly.

NOTE: If the dust cover is cracked, the ball joint could be damaged, so if the dust cover is damaged during maintenance work, replace it.

Upper Arm Ball Joint Dust Cover Replacement





Replace the dust cover by the following procedure only if the dust cover has become damaged by accident during servicing.
1. Remove the dust cover.
2. Apply multipurpose grease to the lip and inside of the dust cover.
3. Drive in the dust cover with special tool until it is fully seated.
4. Press the dust cover with a finger to check whether the dust cover is cracked or damaged.