Hub / Bearing Description; Operation; Diagnosis And Testing - Hub And Bearing (Rear) - Chrysler PT Cruiser Service & Repair Manual

PT
AXLE PIVOT BUSHING (Continued)
(c) Install the nut on the inboard end of the nut.
Tighten the nut until the bracket has resistance
when turned, but still moves independent of the
axle bushing. It must be fully tightened later, once
the vehicle is at curb height.
(9) Remove the wood block between the arm and
body of the vehicle.
(10) Swing the trailing arms up aligning the
brackets with the scribed marks made upon removal
(Fig. 17), then install all eight mounting bolts (four
per side). Thread the bolts in, but do not fully
tighten.
(11) Tap the axle trailing arm brackets as neces-
sary to align the brackets to the scribed marks, then
tighten the bolts to a torque of 54 N·m (40 ft. lbs.).
(12) Remove the jack.
CAUTION: When installing the watts links and bell
crank to the axle, make sure the bell crank is right-
side-up. When mounted properly, the words "BACK
UP" should be able to be read from the rear over
the top of the axle (Fig. 20).
(13) Install the bolt from the front securing the
watts link bell crank to the center of the axle (Fig.
15). Place the washer and nut on the end of the
mounting bolt and tighten it to a torque of 149 N·m
(110 ft. lbs.).
(14) Move the parking brake cables to their origi-
nal mounting position below the axle pivot bushing
on the inboard side of the trailing arm.
(15) Align the cable routing brackets with their
mounts on the trailing arm. Install the two bolts
securing the cable and routing brackets to the trail-
ing arm (Fig. 13). Install and tighten the mounting
bolts to a torque of 11 N·m (100 in. lbs.).
(16) Make sure the parking brake cable and grom-
met is still in the proper position at the body access
hole.
(17) Install the bolts securing the brake flex hoses
(and wheel speed sensor cable on ABS models) to the
vehicle body immediately behind the axle trailing
arm forward brackets.
(18) Install the rear tire and wheel assemblies.
Tighten all wheel nuts to a torque of 135 N·m (100 ft.
lbs.).
(19) Lower the vehicle.
(20) Place the vehicle on an alignment rack or
drive-on hoist.
(21) With the vehicle at curb height, tighten both
trailing arm to mounting bracket pivot thru-bolts to
a torque of 122 N·m (90 ft. lbs.).
HUB / BEARING
DESCRIPTION
The rear wheel bearing and wheel mounting hub
used on this vehicle are a one-piece sealed unit or
hub and bearing assembly. It is permanently lubri-
cated when assembled and is sealed for life. There is
no periodic lubrication or maintenance recommended
for these units.
The hub and bearing is mounted on the spindle
which is bolted to the axle (Fig. 23). The hub and
bearing is secured to the spindle using a special nut.
Vehicles equipped with antilock brakes have rear
hub and bearings with the tone wheel for the rear
wheel speed sensors pressed onto the hub.
The only serviceable components of the hub and
bearing are the wheel mounting studs pressed into
the hub.

OPERATION

The hub and bearing adapts the tire and wheel
assembly to the axle mounted spindle. It's bearing
allows the tire and wheel assembly to rotate freely on
the vehicle. The brake drum or brake rotor mounts to
the hub's wheel mounting studs aiding in stopping
the vehicle when required.
On vehicles equipped with antilock brakes, the
tone wheel pressed onto the hub allows the brake
system to sense wheel motion.
DIAGNOSIS AND TESTING - HUB AND
BEARING (REAR)
The hub and bearing is designed for the life of the
vehicle and requires no type of periodic maintenance.
The following procedure may be used for diagnosing
the condition of the hub and bearing.
With the wheel, disc brake rotor or brake drum
removed, rotate the hub. Any roughness or resistance
to rotation may indicate dirt intrusion or a failed hub
bearing. If the bearing exhibits any of these condi-
tions during diagnosis, the hub and bearing will
require replacement. The bearing is not serviceable
alone.
Damaged bearing seals and the resulting excessive
grease loss may also require hub and bearing
replacement. Moderate grease weapage from the
bearing is considered normal and should not require
replacement of the wheel bearing.
To diagnose a bent hub, refer to ROTOR in
BRAKES for the procedure on measuring hub
runout.
REAR SUSPENSION 2 - 39