Upper Control Arm Replacement

REMOVAL PROCEDURE
1. Raise the vehicle. Support the vehicle with safety stands.
2. Remove the tire and wheel assembly. Refer to WHEEL REMOVAL in TIRES AND WHEELS.

CAUTION: Before removing or installing any electrical unit or when a tool or equipment could easily come in contact with "live" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components. Unless instructed otherwise, the ignition switch must be in the "OFF" or "LOCK" position.

3. Disconnect the negative battery cable.





4. Disconnect the brake hose from the upper control arm. Tie the hose out of the way.





5. Remove the brake hose bracket.





6. Remove the speed sensor bracket.
7. Remove the cotter pin.
8. Remove the nut.
9. Disconnect the upper ball joint from the knuckle. Refer to UPPER BALL JOINT REPLACEMENT (FULL-TIME FOUR-WHEEL DRIVE).





10. Remove the cam hardware nuts, the cams, and the bolts.
11. Remove the upper control arm.

INSTALLATION PROCEDURE
1. Install the upper control arm to the frame.





2. Install the cam hardware bolts and the cams.
^ Make sure the bolt heads are opposed inside the bracket.
^ The cam lobes must point down.

NOTICE: Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. The manufacturer will call out those fasteners that require a replacement after removal. The manufacturer will also call out the fasteners that require thread lockers or thread sealant. UNLESS OTHERWISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and joint clamping force, and may damage the fastener. When you install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems.

3. Install the new nuts.

Tighten
^ Tighten the front nut first, then the rear nut.
^ Tighten the nuts to 123 Nm (91 ft. lbs.).
^ Tighten the nuts with the control arm at Z height. Refer to TRIM HEIGHT in SUSPENSION GENERAL DIAGNOSIS.





4. Connect the upper ball joint stud to the knuckle.
5. Install the nut.

Tighten
Tighten the nut to 90 Nm (66 ft. lbs.).

6. Install a new cotter pin. Tighten the nut up to an additional i/6 amount in order to insert the cotter pin through the upper ball joint stud. Bend the cotter pin ends flat against the nut.





7. Install the brake hose bracket.





8. Install the speed sensor bracket.

Tighten
Tighten the brake hose and the speed sensor nuts to 16 Nm (12 ft. lbs.).





9. Connect the brake hose.
10. Connect the negative battery cable. Refer to BATTERY CABLE in ENGINE ELECTRICAL.
11. Install the tire and wheel assembly. Refer to WHEEL INSTALLATION in TIRES AND WHEELS.
12. Remove the safety stands.
13. Lower the vehicle.