Upper Arm

Upper Arm

Removal

CAUTION: Suspension fasteners are critical parts because they affect the performance of vital components and systems and their failure can result in major service expense. A new part with the same part number must be installed if installation is necessary. Do not use a new part of lesser quality or substitute design. Torque values must be used as specified during reassembly to make sure of correct retention of these parts.

NOTE: The suspension upper arm bushings or ball joints are not serviced separately from the upper rear suspension arm. If the bushings or ball joints require service a new suspension upper arm must be installed.





1. Remove the hub cap. Measure the distance from the center of the hub to the lip of the fender with the vehicle in a level, static ground position.
2. With the vehicle in NEUTRAL, position it on a hoist.





3. Unclip the wheel speed sensor wire retainer from the suspension upper arm.





4. Remove the wheel speed sensor bolt and the wheel speed sensor. Position the sensor aside.

5. CAUTION: Use care not to damage the wheel speed sensor tone ring. A damaged sensor ring will result in incorrect ABS operation.

NOTE: Use the hex-holding feature to prevent the ball Joint from turning while removing the nut.

Remove and discard the upper ball joint nut, then disconnect the upper ball joint from the wheel knuckle.
6. Remove and discard the upper arm-to-subframe nuts and bolts and remove the upper arm.

Installation

CAUTION: Do not tighten the suspension upper arm-to-subframe nuts until the suspension is at curb height. Failure to do so can cause severe damage to the bushings resulting in poor ride quality and handling.

1. NOTE: The upper arm-to-subframe bolts and nuts are of a torque prevailing design. New bolts and nuts must be used.

Position the arm on the subframe and install new suspension upper arm-to-subframe nuts and bolts. Do not tighten at this time.

2. CAUTION: Use care not to damage the wheel speed sensor tone ring. A damaged sensor ring will result in incorrect ABS operation.

NOTE: Install the ball joint nut using the hex-holding feature until snug. Final tighten the nut using a line-type crows foot and a torque wrench.

Connect the ball Joint to the wheel knuckle and hub assembly. Install a new ball joint nut.
^ Tighten to 90 Nm (66 ft. lbs.).

3. Clip the wheel speed sensor wire to the suspension upper arm.
4. Position the wheel speed sensor and install the bolt.
^ Tighten to 8 Nm (71 inch lbs.).





5. Position a jack stand under the suspension lower arm and raise the suspension until the distance between the center of the hub and the lip of the fender is equal to the measurement taken in Removal, Step 1.
6. Tighten the upper arm-to-subframe nuts.
^ Tighten to 90 Nm (66 ft. lbs.).

7. Lower the suspension and remove the jack stand.