1993 CHEVROLET DYNASTY lock

(14) Lower vehicle.
(15) Align the front wheels of the vehicle. Use the
procedure listed under Wheel Alignment, in the
Front Suspension Service Procedures section of this
service manual.
HUB AND BEARING ASSEMBLY
The Unit III Front Hub and Bearing (Fig. 1) is used
on all Front Wheel Drive Applications. All hub and bearing assemblies mount to the steer-
ing knuckle the same way, but very by the wheel size
on the vehicle. Vehicles equipped with 14 inch wheels
have a 4 inch wheel mounting stud pattern. Vehicles
equipped with 15 inch wheels hav e a 4 1/2 inch wheel
mounting stud pattern. If a hub and bearing assembly
needs to be replaced, be sure that the replacement
assembly has the same size wheel mounting stud
pattern as the original part.
This unit is serviced only as a complete assembly
(Fig. 1). It is mounted to the steering knuckle by four
mounting bolts that are removed from the rear of the
steering knuckle (Fig. 2).
REMOVAL
Replacement of the front (drive) hub and bearing
assembly can be done without having to remove the
steering knuckle from the vehicle. (1) Remove cotter pin, hub nut lock, and spring
washer (Fig. 3). (2) Loosen hub nut while the vehicle is on the floor
with the brakes applied (Fig. 4). The hub and drive-
shaft are splined together through the knuckle
(bearing assembly) and retained by the hub nut. (3) Raise vehicle, see Hoisting Recommendations in
Group 0 of this service manual. (4) Remove the hub nut and the washer from the
stub axle (Fig. 3). (5) Remove the wheel lug nuts, and tire and wheel
assembly from the vehicle.
Fig. 16 Install Washer and Hub Nut
Fig. 17 Tighten Hub Nut
Fig. 18 Install Spring Washer, Nut Lock, & Cotter Pin
Fig. 1 Unit III Front Hub And Bearing Assembly
2 - 20 SUSPENSION AND DRIVESHAFTS Ä

(6) Disconnect tie rod end from steering arm with
Puller Special, Tool C-3894-A (Fig. 5). (7) Remove clamp bolt securing the ball joint stud
into the steering knuckle (Fig. 6). (8) Remove caliper guide pin bolts (Fig. 6) and sepa-
rate caliper assembly from braking disc. Support
caliper with wire hook and not by hydraulic
hose. (Fig. 7) Remove braking disc from hub and
bearing assembly (Fig. 8). (9) Separate the steering knuckle assembly from the
ball joint stud. Pull knuckle assembly out and away
from driveshaft (Fig. 9). Care must be taken not to separate the inner
C/V joint during this operation. Do not allow
driveshaft to hang by inner C/V joint, driveshaft
must be supported. (10) Remove the four hub and bearing assembly
mounting bolts from rear of steering knuckle (Fig. 9). (11) Remove the hub and bearing assembly from the steering knuckle (Fig. 10).
Replacement of the
grease seal is recommended whenever this ser-
vice is performed.
INSTALLATION
CAUTION: All steering knuckle and bearing mounting
surfaces must be smooth and completely free of
foreign material or nicks.
(1) Install new front hub and bearing assembly into
the steering knuckle. Tighten the hub and bearing
assembly to steering knuckle attaching bolts (Fig. 9), in
a criss-cross pattern to 65 N Im (45 ft. lbs.) torque.
Fig. 2 Front Hub And Bearing Assembly Mounting
Fig. 3 Remove Cotter Pin, Nut Lock, & Spring
Washer
Fig. 4 Loosen Hub Nut
Fig. 5 Disconnect Tie Rod End
Ä SUSPENSION AND DRIVESHAFTS 2 - 21

torque. When installing guide pins, use extreme
caution not to cross the threads. (11) Clean all foreign matter from the threads of the
stub axle (Fig. 17). Install the washer and hub nut (Fig.
17) onto the threads of the stub axle and tighten nut. (12) With brakes applied, tighten front hub nut to
(244 N Im) 180 ft. lbs. torque (Fig. 18).
(13) Install spring washer, nut lock, and new cot-
ter pin. Wrap cotter pin prongs tightly around nut
lock (Fig. 19). Install wheel and tire assembly. Tighten wheel
nuts to 129 N Im (95 ft. lbs.) torque.
Fig. 15 Install Tie Rod End
Fig. 16 Installing Family Caliper
Fig. 17 Install Washer and Hub Nut
Fig. 18 Tighten Hub Nut
Fig. 19 Install Spring Washer, Nut Lock, & Cotter
Pin
Fig. 14 Tighten Clamp Bolt
2 - 24 SUSPENSION AND DRIVESHAFTS Ä

DRIVESHAFTS INDEX
page page
C/V Joint Boots Handling and Cleaning ........ 44
Damper Weights ......................... 48
Driveshaft Identification .................... 27
Driveshaft Positioning Specifications .......... 48
Driveshaft Reconditioning Procedure .......... 31
Driveshafts, Remove Install ................. 27 General Information
....................... 25
Inner C/V Joint .......................... 32
Intermediate Shaft Assembly Recondition ...... 41
Outer C/V Joint .......................... 37
Service Procedures ....................... 27
GENERAL INFORMATION
Chrysler front wheel drive vehicles use two different
driveshaft systems. Some vehicles use an equal length
system while other vehicles use an unequal length sys-
tem (Fig. 1). The equal length system has short solid interconnect-
ing shafts of equal length on the left and right sides.
The unequal length system has a short solid intercon-
necting shaft on the left side with a longer tubular or
solid interconnecting shaft on the right.
The driveshaft assemblies can be serviced in the same
manner for both systems. With the exception of a rubber
washer seal attached to the right inner (Constant Veloc- ity) C/V joint, on an equal length installation. The equal
length system also has an intermediate shaft attached to
a cardan joint (U-joint). With a stub shaft splined into
the right side of the transaxle with a bearing and
bracket assembly fastened to the right rear of the engine
block.
The driveshaft assemblies are three piece units. Each
driveshaft has a Tripod Joint, an Interconnecting Shaft
and a Rzeppa joint. The Tripod Joint is splined into the
transaxle side gear, or into the intermediate shaft on
the right side of an equal length system. The Rzeppa
joint has a stub shaft that is splined into the wheel hub.
Fig. 1 Front-Wheel-Drive Driveshaft Systems
Ä SUSPENSION AND DRIVESHAFTS 2 - 25

DRIVESHAFT IDENTIFICATION
Driveshafts are identified by the manufacturer. Vehi-
cles can be equipped with any of these driveshaft as-
semblies. Each assembly can be identified as shown in
(Fig. 2).
SERVICE PROCEDURES
Procedures for the removal and installation of the
driveshafts are essentially the same for all front
wheel drive vehicles. Each driveshaft has a spring
within the inboard Tripod C/V joint that maintains
constant engagement with the transaxle. This allows
the drive shaft to be removed without dismantling
part of the transaxle.
CAUTION: Boot sealing is vital to retain special lu-
bricants and to prevent foreign contaminants from
entering the C/V joint. Mishandling, such as allow-
ing the assemblies to dangle unsupported, pulling
or pushing the ends can cut boots or damage C/V
joints. During removal and installation procedures
always support both ends of the driveshaft to pre-
vent damage.
DRIVESHAFTS, REMOVE INSTALL
HUB NUT REMOVAL
Hub nut removal and installation is the same for
all front wheel drive vehicles. For installation see
Hub Nut Assemblies Install. (1) Remove cotter pin, lock and spring washer (Fig.
3).
(2) Loosen hub nut and wheel nuts while vehicle is
on floor and brakes applied (Fig. 4). (3) Raise vehicle, see Hoisting in Lubrication and
Maintenance, Group 0 of this service manual. (4) Remove hub nut, washer, wheel and tire as-
sembly (Fig. 5).
DRIVESHAFT ASSEMBLIES REMOVE
Inboard C/V joints have stub shafts splined into the
differential side gears, or splined into the intermedi-
ate shaft on the right side of an equal length system.
Driveshafts are retained in the side gears by a con-
stant spring force provided by a spring contained
within the inboard C/V joints. (1) For removal of right driveshaft, the speedome-
ter pinion must be removed BEFORE shaft removal
(Fig. 6). (2) Remove clamp bolt securing ball joint stud into
steering knuckle (Fig. 7). (3) Separate ball joint stud from steering knuckle
by prying against knuckle leg and control arm.
CAUTION: Do not damage ball joint or C/V joint
boots (Fig. 8). (4) Separate outer C/V joint splined shaft from hub
by holding C/V housing while moving knuckle(hub)
assembly away (Fig. 9).
Fig. 3 Remove Cotter Pin, Nut Lock, & Spring Washer
Fig. 4 Loosen Hub Nut & Wheel Nuts
Fig. 5 Remove Hub Nut & Washer Loosen Shaft
Ä SUSPENSION AND DRIVESHAFTS 2 - 27

not to allow dirt to enter or grease to leave the boot
cavity. The clamp must be removed and discarded be-
fore the rod can be inserted. After venting, install a
new Service Clamp. (See Boots Install section at the
end of this group for details).
HUB NUT INSTALL
The front wheel hub nuts use a lock and cotter pin
to maintain proper wheel bearing preload and pre-
vent the nut from backing off. Install the assembly
as follows: (1) Install washer and hub nut after cleaning for-
eign matter from threads (Fig. 18). (2) With brakes applied, tighten hub nut to 245
N Im (180 ft. lbs.) torque (Fig. 19).
(3) Install lock, spring washer and newcotter pin. Wrap cotter pin prongs tightly around nut lock
(Fig. 20). (4) Install wheel and tire assembly. Tighten wheel
nuts to 129 N Im (95 ft. lbs.) torque (Figs. 21).
Fig. 15 Install Knuckle Assembly on Ball Joint Stud
Fig. 16 Tighten Clamp Bolt
Fig. 17 Install Speedometer Pinion
Fig. 18 Install Washer & Hub Nut
Fig. 19 Tighten Hub Nut
2 - 30 SUSPENSION AND DRIVESHAFTS Ä

DRIVESHAFT RECONDITIONING PROCEDURE
Driveshaft reconditioning and/or boot replacement
for all front wheel drive vehicles is essentially the same
per C/V joint. Note: that lubricant requirements and quanti-
ties are different for Inner Joints than for Outer
Joints, and type being serviced. Use only the
recommended lubricants. See (Fig. 1) for the exploded view of the front drive
shaft components and there location in the assembly. Driveshaft requirements are different for vari-
ous vehicle models, engines, and transaxles, and
often change from one model year to the next. Driveshaft parts will be different to accommodate
this. Therefore, when replacing parts, be sure to use
only those specified in the service parts catalog. For
the exact model year, model, engine, transaxle, and
type being serviced.
Fig. 1 Driveshaft Components
Fig. 21 Install Wheel And Tire Assembly
Fig. 20 Install Spring Washer, Nut Lock, & New Cot- ter Pin
Ä SUSPENSION AND DRIVESHAFTS 2 - 31

(4) Install the snap ring into the groove on the in-
terconnecting shaft to lock the tripod in position (Fig.
16) Should the wire ring tripod retainer not be suitable
for reuse or a new one is not available,the following
procedure should be used: (1) Install tripod on the shaft.
(2) Install spring and cup assembly into inner joint
housing. (3) Position small end of boot in locating grooves
on the interconnecting shaft. (4) Clamp the small end boot clamp onto boot, re-
taining boot to the interconnecting shaft. (5) Distribute 1/2 packet of grease into boot and
1/2 into housing. (6) Install tripod into housing.
(7) Place large clamp over shaft.
(8) Install driveshaft into vehicle, see Driveshaft
Install. (9) Position large end of boot into locating groove.
(10) Slide large clamp into position.
(11) See Boot Install for clamping instructions.
TRIPOD ASSEMBLY INSTALLATION S.S.G. & G.K.N. WITH
SINGLE RING RETENTION
(1) Fasten the (new) boot to the interconnecting
shaft. See Boots Install. (2) Install the tripod assembly onto the intercon-
necting shaft until it is past the snap ring groove on
the shaft (Fig. 17). If required the tripod assembly
can be tapped onto the interconnecting shaft using a
brass drift, on the body of the tripod assembly (Fig.
4). Do not hit the outer tripod assembly bearings in
an attempt to install tripod on interconnecting shaft.
Fig. 13 G.K.N. Tripod Thick Ring Side
Fig. 14 G.K.N. Tripod Circlip Side
Fig. 15 Tripod Snap Ring Installation
Fig. 16 Tripod Installation
Ä SUSPENSION AND DRIVESHAFTS 2 - 35