Upper Control Arm

REMOVAL & INSTALLATION

3000GT, Diamante and Mirage

These vehicles use a strut type front suspension. No upper control arm is used.

Eclipse and Galant

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Raise and safely support the vehicle.
3. Remove or disconnect the following:
   • Front wheel
   • Upper arm ball joint from the steering knuckle
   • Upper arm shaft mounting nuts from the body
   • Upper arm
   • Through-bolts that attach the upper arm to the shafts

   To install:

4. Assembly the upper arm to the shafts at the proper angle. Torque the through-bolts and nuts to 41 ft. lbs. (57 Nm). The proper angle is 84–86°. After the arm and the shafts are connected at the right angle, measure dimensions A and B to insure correct assembly.
   • A O-ring: 11.8 in. (299.9mm)
   • B O-ring: 9.2 in. (234.0mm)

     Fig. 2: Correct angle of control arm and shafts — Eclipse and Galant

     Fig. 3: Measure the dimensions A and B as shown — Eclipse and Galant

5. Install or connect the following:
   • Control arm assembly to the body with new self-locking nuts. Torque the self-locking nuts to 62 ft. lbs. (86 Nm).
   • Upper arm ball joint to the steering knuckle with a new self-locking nut. Torque the locking nut to 20 ft. lbs. (28 Nm).
   • Front wheel
6. Check the front wheel alignment and adjust if necessary.
7. Lower the vehicle.