Jeep 1997 Grand Cherokee Service Manual page 43

ZG
SERVICE PROCEDURES (Continued)
CONDITION
FRONT END NOISE
EXCESSIVE PLAY IN STEERING
FRONT WHEELS SHIMMY
VEHICLE INSTABILITY
EXCESSIVE STEERING EFFORT
VEHICLE PULLS TO ONE SIDE
WHEEL ALIGNMENT
Before each alignment reading the vehicle should
be jounced (rear first, then front). Grasp each
bumper at the center and jounce the vehicle up and
down three times. Always release the bumper in the
down position.
CAMBER
The wheel camber angle is preset. This angle is not
adjustable and cannot be altered.
SUSPENSION AND STEERING SYSTEM DIAGNOSIS
POSSIBLE CAUSES
1. Loose or worn wheel bearings.
2. Loose or worn steering or
suspension components
1. Loose or worn wheel bearings.
2. Loose or worn steering or
suspension components
3. Loose or worn steering gear.
1. Loose or worn wheel bearings.
2. Loose or worn steering or
suspension components
3. Tires worn or out of balance.
4. Alignment.
1. Loose or worn wheel bearings.
2. Loose or worn steering or
suspension components
3. Tire pressure.
4. Alignment.
1. Loose or worn steering gear.
2. Column coupler binding.
3. Tire pressure.
4. Alignment.
1. Tire pressure.
2. Alignment.
3. Loose or worn steering or
suspension components
4. Radial tire lead.
5. Brake pull.
6. Weak or broken spring.
1. Replace wheel bearings.
2. Tighten or replace components as
necessary.
1. Replace wheel bearings.
2. Tighten or replace components as
necessary.
3. Adjust or replace steering gear.
1. Replace wheel bearings.
2. Tighten or replace components as
necessary.
3. Replace or balance tires.
4. Align vehicle to specifications.
1. Replace wheel bearings.
2. Tighten or replace components as
necessary.
3. Adjust tire pressure.
4. Align vehicle to specifications.
1. Adjust or replace steering gear.
2. Replace coupler.
3. Adjust tire pressure.
4. Align vehicle to specifications.
1. Adjust tire pressure.
2. Align vehicle to specifications.
3. Tighten or replace components as
necessary.
4. Rotate or replace tire as
necessary.
5. Repair brake as necessary.
6. Replace spring.
CASTER
Check the caster of the front axle for correct angle.
Be sure the axle is not bent or twisted. Road test the
vehicle and observe the steering wheel return-to-cen-
ter position. Low caster will cause poor steering
wheel returnability.
During the road test, turn the vehicle to both the
left and right. If the steering wheel returns to the
center position unassisted, the caster angle is correct.
However, if steering wheel does not return toward
the center position unassisted, a low caster angle is
probable.
SUSPENSION 2 - 3
CORRECTION