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LOWER CONTROL ARM Jeep Compass I

Suspension System 3 illustrations ~538 words

LOWER CONTROL ARM

Inspect the lower control arm for signs of damage from contact with the ground or road debris. If the lower control arm shows any sign of damage, look for distortion. Do not attempt to repair or straighten a broken or bent lower control arm. If damaged, the lower control arm stamping is serviced only as a complete component.

Inspect both lower control arm isolator bushings for severe deterioration and replace the lower control arm as required. Inspect the ball joint per the inspection procedure in this service information and replace the lower control arm required.

The only serviceable component of the lower control arm is the ball joint seal boot. It should only be replaced if damaged during service of a chassis component. Otherwise, replace the entire control arm.

Note. Before proceeding, see WARNING .

Scheme 57

Scheme 57
Scheme 57

Scheme 58

Scheme 58
Scheme 58
  1. Raise and support the vehicle. Refer to «STANDARD PROCEDURE»(ref-304322-S16806387812008110700000) .
  2. Remove the wheel mounting nuts (3), then the tire and wheel assembly (1).
  3. Remove the nut (5) and pinch bolt (4) clamping the ball joint (6) stud to the knuckle (3). CAUTION: Upon removing the knuckle from the ball joint stud, do not pull outward on the knuckle. Pulling the knuckle outward at this point can separate the inner C/V joint on the halfshaft thus damaging it. CAUTION: Use care when separating the ball joint stud (4) from the knuckle (1), so the ball joint seal does not get cut.
  4. Using an appropriate prying tool (2), separate the ball joint stud (4) from the knuckle (1) by prying down on lower control arm (3) and up against the ball joint boss on the knuckle.
  5. Remove the front bolt (2) attaching the lower control arm (3) to the front suspension crossmember (4).
  6. Remove the nut (1) on the rear bolt attaching the lower control arm (3) to the front suspension crossmember (4). Remove the bolt.
  7. Remove the lower control arm (3) from the crossmember (4).

Scheme 59

Scheme 59: LOWER CONTROL ARM
Scheme 59: LOWER CONTROL ARM
  1. Place the lower control arm (2) into the front suspension crossmember (1).
  2. Insert the rear bolt (3) up through the crossmember (1) and lower control arm (2).
  3. Install, but do not fully tighten, the nut (1) on the rear bolt attaching the lower control arm (3) to the crossmember (4).
  4. Install, but do not fully tighten, the front bolt (2) attaching the lower control arm to the crossmember.
  5. With no weight or obstruction on the lower control arm, tighten the lower control arm rear mounting bolt nut (1) to 183 N.m (135 ft. lbs.).
  6. With no weight or obstruction on the lower control arm, tighten the lower control arm front pivot bolt (2) to 183 N.m (135 ft. lbs.).
  7. Install the ball joint (6) stud into the knuckle (3), aligning the bolt hole in the knuckle boss with the groove formed in the side of the ball joint stud.
  8. Install a NEW ball joint stud pinch bolt (4) and nut (5). Tighten the nut to 82 N.m (60 ft. lbs.).
  9. Install the tire and wheel assembly (1). Refer to «INSTALLATION»(ref-304327-S25080286652008110700000) . Install and tighten the wheel mounting nuts (3) to 135 N.m (100 ft. lbs.).
  10. Lower the vehicle.
  11. Perform wheel alignment as necessary. See «STANDARD PROCEDURE»(ref-304325-S12670711652008110700000) .