Lower Arm

Lower Arm

Special Tool(s):

Removal

CAUTION: Suspension fasteners are critical parts because they affect performance of vital parts and systems and their failure can result in major service expense. A new part with the same part number must be installed if installation becomes necessary. Do not use a replacement 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.

CAUTION: Orientation of the suspension fasteners is important. Make sure the fasteners are installed in the same direction as they were in when removed.

CAUTION: Do not tighten the lower arm-to-frame bolt or shock absorber lower nut until the installation procedure is complete and the weight of the vehicle is resting on the wheel and tire assemblies.

1. With the vehicle in NEUTRAL, position it on a hoist.
2. If equipped, disconnect the air suspension height sensor connecting link from the lower arm.
3. Remove and discard the shock absorber lower bolt and flagnut.
4. Remove and discard the lower arm-to-frame bolt and flagnut.
5. Remove and discard the lower ball joint nut.

6. CAUTION: Do not damage the ball joint boot while installing the special tool.

Using the special tool, separate the lower ball joint from the wheel knuckle.





7. Swing the lower arm to the rear of the vehicle and remove the lower arm.

Installation
1. Position the lower arm ball joint onto the wheel knuckle and install the lower ball joint nut.
^ Tighten to 150 Nm (111 lb-ft).

2. CAUTION: Do not tighten the lower arm-to-frame bolt at this time.

Install the lower arm-to-frame bolt and flagnut.
^ Snug the bolt to 50 Nm (37 lb-ft).

3. CAUTION: Do not tighten the shock absorber lower nut at this time.

Position the lower arm and install a new shock absorber lower bolt and nut.
4. Lower the vehicle so that the weight of the vehicle is on the wheel and tire assemblies.
5. Tighten the lower arm-to-frame bolt to 300 Nm (221 lb-ft).
6. Tighten the shock absorber lower bolt to 475 Nm (350 lb-ft).
7. If equipped, connect the air suspension height sensor connecting link to the lower arm.
8. Check and, if necessary, align the rear end.