Caution: Floor jack must remain under the lower control arm during removal and installation to retain the lower control arm in position. Failure to do so could result in personal injury.

1. Raise the front of the vehicle.

•	Support the lower control arm with floor stands.

•	Because the weight of the vehicle is used to relieve the spring tension on the upper control arm, position the floor stands between the spring seats and the ball joints of the lower control arms in order to maintain maximum leverage.

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
3. Remove the air cleaner extension, if necessary.
4. Remove the brake hose bracket from the upper control arm.

4.1.	Remove the nuts and the screws.

4.2.	Tie the hose out of the way.

5. Remove the upper ball joint from the steering knuckle. Refer to Steering Knuckle Replacement .
6. Remove the attaching bolts and nuts of the upper control arm.
7. Remove the upper control arm.
8. Remove the bushings.
9. Inspect all of the parts for wear and damage.

1. Install the bushings.
2. Install the upper control arm to the frame.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Important: 

•	The pivot bolts must be installed in the proper direction.

•	Tighten the front nut prior to tightening the rear nut.

•	Tighten the nuts with the control arm at Z height. Refer to Trim Height Inspection in Suspension General Diagnosis.

3. Install the bolts and new nuts.

Tighten
Tighten the nuts to 190 N·m (140 lb ft).

4. Install the upper ball joint to the steering knuckle. Refer to Upper Control Arm Ball Joint Replacement .
5. Install the brake hose bracket to the upper control arm.
6. Install the bracket screws and the nuts.

Tighten
Tighten the nuts to 18 N·m (13 lb ft).

7. Install the brake hose to the bracket.
8. Install the air cleaner extension, if necessary.
9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
10. Check the front wheel alignment. Refer to Wheel Alignment Measurement in Wheel Alignment.

Upper Control Arm Replacement 4WD

1. Raise the vehicle. Support the vehicle with suitable safety stands.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
3. Remove the air cleaner extension, if necessary.
4. Remove the brake hose.

4.1.	Remove the nut and the screw.

4.2.	Remove the bracket and the hose.

4.3.	Tie the hose out of the way.

5. Remove the cotter pin.
6. Remove the nut.
7. Disconnect the upper control arm from the knuckle.
8. Remove the nuts.



9. Remove the bolts.
10. Remove the upper control arm.
11. Remove the bushings.

1. Install the bushings.
2. Install the upper control arm to the frame.



3. Install the bolts and the washers. Make sure the bolt heads are opposed inside the bracket.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Important: Tighten the front nut prior to tightening the rear nut.

Tighten the nuts with the control arm at Z height. Refer to Trim Height Inspection in Suspension General Diagnosis.
4. Install the new nuts.

Tighten
Tighten the nuts to 190 N·m (140 lb ft).




5. Install the upper ball joint stud to the knuckle.
6. Install the nut to the upper ball joint stud.

Tighten

•	Tighten the nut to 100 N·m (94 lb ft).

•	Tighten the nut in order to align the cotter pin. Do not tighten more than 1/6 turn.

7. Install the new cotter pin. Bend the pin ends against the nut flats.
8. Remove the support from the knuckle.
9. Install the brake hose.

9.1.	Install the bracket and the hose.

9.2.	Install the screw and the nut.

10. Install the air cleaner extension, if necessary.
11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
12. Lower the vehicle.