Control Arms (Front) Explanation

FRONT LOWER CONTROL ARM DESCRIPTION
The lower suspension arms are steel and use bushings at both ends of the arm. The arms mount to the frame rail bracket and the axle brackets.

FRONT LOWER CONTROL ARM OPERATION
The lower suspension arm bushings provide isolation from the axle. The arm and bushings provide location and react to loads from the axle. The lower suspension arms can be used to adjust caster and pinion angle by installing a cam bolt service package.

FRONT LOWER CONTROL ARM REMOVAL
1. Raise and support the vehicle.
NOTE: If the vehicle is equipped with a cam bolt service kit, paint or scribe marks on the cam adjuster and the suspension arm for installation reference.
2. Remove the lower suspension arm nut and cam/bolt (Fig 1) #3 from the axle.
3. Remove the nut and bolt (Fig 1) #3 from the frame rail bracket and remove the lower suspension arm #4.

FRONT LOWER CONTROL ARM INSTALLATION
1. Position the lower suspension arm (4) in the axle bracket and frame rail bracket.
NOTE: Position the paint dot located on the control arm toward the axle and facing outboard. If paint dot is not visible, the bend should point inboard, and the short end should attach to the axle side.
NOTE: Frame and axle bolts should be installed outboard to inboard.
2. Install the frame bolt and nut (Fig 1) #3 finger tighten.
3. Install bolt and new nut (Fig 1) #3 finger tighten in the axle.
4. Lower the vehicle.
NOTE: If a caster adjustment kit has been installed, there is a different torque specification.
5. For original equipment bolt/nut, tighten the axle bracket nut to 159 N.m (117 ft. lbs.). For a caster adjustment kit bolt/nut, tighten the axle bracket nut to 85 N.m (63 ft. lbs.).
6. Tighten frame bracket nut to 159 N.m (117 ft. lbs.).
7. Align vehicle to specifications. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE

FRONT UPPER CONTROL ARM DESCRIPTION
The upper suspension arms are steel and use rubber bushings at each end of the arm. The arms mount to the frame rail bracket and the axle brackets.

FRONT UPPER CONTROL ARM OPERATION
The arm and bushings provide location and react to loads from the axle. The bushings provide isolation from the axle.

FRONT UPPER CONTROL ARM REMOVAL
1. Raise and support the vehicle.
2. Remove electrical clip from the control arm clevis bracket If equipped.
3. Remove the upper suspension arm nut and bolt (Fig 1) #1 at the axle bracket.
4. Remove the nut and bolt (Fig 1) #1 at the frame rail and remove the upper suspension arm (Fig 1) #2.

FRONT UPPER CONTROL ARM INSTALLATION
1. Position the upper suspension arm (Fig 1) #2 at the axle and frame rail.
NOTE: Axle bolt must be installed from the inboard to Outboard.
2. Install the bolts and finger tighten the nuts (Fig 1) #1.
3. Remove the supports and lower the vehicle.
4. Tighten the bolt at the axle and frame brackets to 102 N.m (75 ft. lbs.).