Chrysler 2004 Concorde Service Manual page 34

2 - 4 FRONT SUSPENSION
FRONT SUSPENSION (Continued)
Socket/Wrench Front Strut Nut 6864
Puller C-3894A
Remover C-4150A
Installer MB-990799
HUB / BEARING
DESCRIPTION
The front wheel bearing and front wheel hub of
this vehicle are a hub and bearing unit type assem-
bly. This unit combines the front wheel mounting
hub (flange) and the front wheel bearing into a
sealed one piece unit. The hub and bearing is
mounted to the center of the steering knuckle and is
retained by three mounting bolts accessible from the
rear of the steering knuckle. The hub flange has five
wheel mounting studs.
The wheel mounting studs used to mount the tire
and wheel to the vehicle are the only replaceable
components of the hub and bearing assembly. Other-
wise, the hub and bearing is serviced only as a com-
plete assembly.
OPERATION
The hub and bearing has internal bearings that
allow the hub to rotate with the driveshaft and tire
and wheel. The five wheel mounting studs mount the
tire and wheel, and brake rotor to the vehicle.
DIAGNOSIS AND TESTING - HUB AND
BEARING (FRONT)
The front hub 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 front hub bearing.
With the wheel, disc brake caliper, and brake rotor
removed, rotate the wheel hub. Any roughness or
resistance to rotation may indicate dirt intrusion or a
failed hub bearing. If the hub bearing exhibits any of
these conditions during diagnosis, the hub and bear-
ing will require replacement. The bearing is not ser-
viceable.
Damaged bearing seals and the resulting excessive
grease loss may also require bearing replacement.
Moderate grease weapage from the hub bearing is
considered normal and should not require replace-
ment of the hub and bearing.
To check for excessive hub runout, (Refer to 5 -
BRAKES/HYDRAULIC/MECHANICAL/ROTORS
DIAGNOSIS AND TESTING).
REMOVAL - HUB AND BEARING (FRONT)
(1) Raise vehicle on jackstands or centered on a
frame contact hoist. See Hoisting in Lubrication and
Maintenance.
(2) Remove the front wheel and tire assembly from
the vehicle.
LH
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