Jeep cherokee 2000 Service Manual page 20

2 - 4 SUSPENSION
DIAGNOSIS AND TESTING (Continued)
CONDITION
KNOCKING, RATTLING
OR SQUEAKING
IMPROPER TRACKING
SERVICE PROCEDURES
PRE-ALIGNMENT
Before starting wheel alignment, the following
inspection and necessary corrections must be com-
pleted. Refer to Suspension and Steering System
Diagnosis Chart for additional information.
(1) Inspect tires for size and tread wear.
(2) Set tire air pressure.
(3) Inspect front wheel bearings for wear.
(4) Inspect front wheels for excessive radial or lat-
eral runout and balance.
(5) Inspect ball studs, linkage pivot points and
steering gear for looseness, roughness or binding.
(6) Inspect suspension components for wear and
noise.
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 several times. Always release the bumper in
the down position. Set the front end alignment to
specifications with the vehicle at its NORMAL RIDE
HEIGHT.
CAMBER
The wheel camber angle is preset. This angle is not
adjustable and cannot be altered.
CASTER
Before checking the caster of the front axle for cor-
rect angle, be sure the axle is not bent or twisted.
Road test the vehicle, make left and right turns. If
the steering wheel returns to the center position
unassisted, the caster angle is correct. If steering
wheel does not return toward the center position
unassisted, an incorrect caster angle is probable.
Caster can be adjusted by installing the appropri-
ate size shims (Fig. 2).
POSSIBLE CAUSES
1. Worn shock bushings.
2. Loose, worn or bent steering/
suspension components.
3. Shock valve.
1. Loose, worn or bent track bar.
2. Loose, worn or bent steering/
suspension components.
1. Replace shock.
2. Inspect, tighten or replace components
as necessary.
3. Replace shock.
1. Inspect, tighten or replace component as
necessary.
2. Inspect, tighten or replace components
as necessary.
NOTE: Changing caster angle will also change the
front propeller shaft angle. The propeller shaft
angle has priority over caster. Refer to Group 3 Dif-
ferential & Driveline for additional information.
Fig. 2 Caster Adjustment
1 – SHIM
2 – SUSPENSION ARM
TOE POSITION (LHD)
NOTE: The wheel toe position adjustment is the
final adjustment. The engine must remain running
during the entire toe position adjustment.
(1) Start the engine and turn wheels both ways
before straightening the wheels. Secure the steering
wheel with the front wheels in the straight-ahead
position.
(2) Loosen the adjustment sleeve clamp bolts (Fig.
3).
(3) Adjust the right wheel toe position with the
drag link. Turn the sleeve until the right wheel is at
correct TOE-IN specifications. Position the clamp
CORRECTION
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