Chrysler Front Wheel Drive Cars 6-CYL 1988-1995 Repair Information

Front Hub and Bearing

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REMOVAL & INSTALLATION



Except Premier and Monaco
1988 VEHICLES

See Figures 1, 2 and 3

It is not necessary to disassemble and repack wheel bearings. In fact, the bearings must be broken to disassemble them. This procedure is for replacement of damaged or worn bearings only. This procedure requires a set of special tools (C-4811 or equivalent).

  1. Remove the knuckle assembly from the car as previously described.
  2.  
  3. Back one of the bearing retainer screws out of the hub and install bracket C-4811-17 or equivalent between the head of the screw and the retainer. Then, insert the thrust button C-4811-6 or equivalent into the bore of the hub.
  4.  
  5. Position tool C-4811-14 so its two bolts will screw into the caliper mounting threads on the knuckle, passing through the tapped brake adapter extensions. Install the tool's nut and washer onto the bracket bolt of the tool. Then, tighten the bolt to pull the hub off the bearing.
  6.  
  7. If the outboard race stays on the hub, use a C-clamp and universal puller to remove it. Use the thrust button and the fabricated washer from tool C-4811-6 or equivalent; use the C-clamp to keep the puller jaws over the edges of the outboard inner race.
  8.  
  9. Remove the tool and attach the bolts from the steering knuckle.
  10.  
  11. Remove its three retaining screws and remove the bearing retainer from the steering knuckle.
  12.  
  13. Pry the bearing seal out of the machined recess in the knuckle, being careful not to scratch the surfaces of the recess.
  14.  
  15. Install a tool set such as C-4811 through the knuckle hub. Hold the nut with one wrench as you turn the bolt with another to pull the bearing out of the knuckle and into the ring. Then, be sure to discard both the bearing and seal, as they are not reusable.
  16.  



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Fig. Fig. 1: Use a C-clamp and a universal puller to remove the inner bearing race



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Fig. Fig. 2: Use the special tools (or equivalents) to press a new bearing into the knuckle



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Fig. Fig. 3: Use special tool C-4698, or equivalent, to install the new seal into the bearing recess

To install:
  1. Inspect the inner surfaces of the hub (where the bearing interfaces with the outside of the bearing). If these surfaces are rough or damaged in any way, the knuckle must be replaced.
  2.  
  3. Turn the bearing so that the Red seal will face outward and be located near the brake disc.
  4.  


WARNING
Failure to do this would cause heat from the brakes to damage the type of seal used on the opposite side.

Then, with C-4811 or an equivalent tool set, press the new bearing into the knuckle until it seats. Install a new seal and the bearing retainer and then tighten the retainer bolts to 20 ft. lbs.

  1. Press the hub into the bearing with C-4811-1, -2, -9 and -11 or equivalent.
  2.  
  3. Position a new seal into the recess and then install Tool C-4698. Note that this tool has a handle and dual-purpose drive head provided for installing the seal into the knuckle and for installing the wear sleeve into the CV-Joint housing. Assemble the tool as shown, make sure it and the seal are positioned squarely, and then lightly tap the seal into place with a lightweight mallet.
  4.  
  5. Lubricate the entire circumference of the seal and wear sleeve with Multi-Purpose grease.
  6.  
  7. Install the driveshaft into the knuckle and install the knuckle back into the car as described above.
  8.  

1989-90 MODELS (WITH PRESSED-IN 2-PIECE HUB AND BEARING)

See Figures 4, 5 and 6

The 1989-90 Chrysler vehicles were equipped with a either one of two possible hub and bearing assemblies: a pressed-in hub and bearing assembly or a bolt-in hub and bearing assembly. All of the 1991-95 Chrysler vehicles covered in this information use the bolt-in hub and bearing assembly. Both the press-in and bolt-in hub and bearing assemblies are replaced as a unit; disassembly of the hub is not recommended or necessary.

  1. Loosen the wheel lug nuts and axle hub nut.
  2.  
  3. Raise the vehicle and support safely on jackstands.
  4.  
  5. Remove the tire and wheel assembly from the hub.
  6.  
  7. Remove the brake caliper from the adaptor, then remove the adaptor. Slide the brake disc off of the hub assembly. For more details, refer to the procedure in Brakes .
  8.  
  9. Remove the halfshaft(s). For more details, refer to the installation and removal procedure located in Drive Train .
  10.  

Knuckle removal is not necessary for bearing and hub replacement.

  1. Disconnect the tie rod from the knuckle.
  2.  
  3. If knuckle removal is desired, matchmark the lower strut mount to the knuckle. Remove the 2 strut clamp bolts and remove the knuckle from the vehicle.
  4.  
  5. Attach the hub removal tool C-4811, or equivalent, and the triangular adapter to the 3 rear threaded holes of the steering knuckle housing with the thrust button situated inside the hub bore.
  6.  
  7. Tighten the bolt in the center of the tool, to press the hub from the steering knuckle. Remove the special tools from the steering knuckle.
  8.  
  9. Remove the bolts and bearing retainer from the outside of the steering knuckle.
  10.  
  11. Carefully pry the bearing seal from the machined recess of the steering knuckle and clean the recess of all dirt and grease.
  12.  
  13. Insert tool C-4811, or equivalent, through the hub bearing (in the steering knuckle) and install the bearing removal adapter to the outside of the steering knuckle. Tighten the tool to press the hub bearing from the steering knuckle. Discard the bearing and the seal.
  14.  



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Fig. Fig. 4: Remove the hub from the steering knuckle with special tool C-4811-14, or equivalent



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Fig. Fig. 5: The C-clamp and universal puller tools can also be used to pull the inner race from the hub assembly



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Fig. Fig. 6: Use these special tools, or their equivalents, to pull the bearing out of the steering knuckle

To install:
  1. Use tool C-4811, or equivalent, and the bearing installation adapter to press the hub bearing into the steering knuckle.
  2.  

For high temperature durability, the red seal on the bearing is positioned outboard toward the bearing retainer.

  1. Install a new gasket, the bearing retainer and the bolts to the steering knuckle. Tighten the bearing retainer bolts to 20 ft. lbs. (27 Nm).
  2.  
  3. Press the hub into the bearing with the special tools C-4811-1, C-4811-2, C-4811-9 and C-4811-11 as shown in the illustrations.
  4.  
  5. Position the new seal in the recess and assemble the installer tool C-4698 (tool is provided with a handle and dual purpose drive head for installing the seal into the knuckle or for installing the wear sleeve into a CV-joint housing). Install the new seal.
  6.  


WARNING
During any service procedures when the knuckle and driveshaft are separated, thoroughly clean the seal and wear sleeve, then relubricate both components.

  1. Lubricate the full circumference of the seal and wear sleeve with Mopar® Multi-Purpose Lubricant, Part Number 4318063, or equivalent.
  2.  
  3. Install the driveshaft through the hub, then install the steering knuckle assembly to the lower control arm ball joint stud.
  4.  
  5. Install the original, or equivalent, ball joint-to-knuckle pinch bolt and nut. Tighten the nut to 70 ft. lbs. (95 Nm).
  6.  
  7. Install the tie rod end to the steering knuckle, then tighten the tie rod nut to 35 ft. lbs. (47 Nm). Install a new cotter pin.
  8.  
  9. Install the brake rotor onto the hub.
  10.  
  11. Install the brake caliper assembly over the brake rotor and position the adapter onto the steering knuckle. Tighten the adapter-to-knuckle bolts to 160 ft. lbs. (216 Nm).
  12.  
  13. Attach the brake hose retainer-to-strut damper bolt, then tighten to 10 ft. lbs. (13 Nm).
  14.  
  15. Install the washer and hub nut to the end of the axle shaft.
  16.  
  17. Have an assistant apply the brakes, then tighten the hub nut to 180 ft. lbs. (245 Nm).
  18.  
  19. Install the spring washer, nut lock and a new cotter pin. Bend the ends of the cotter pin tight against the nut lock.
  20.  
  21. Install the wheel and tire assembly. Tighten the lug nuts to 95 ft. lbs. (129 Nm).
  22.  
  23. Lower the vehicle to the ground.
  24.  
  25. Have the front end aligned.
  26.  

1989-95 MODELS (WITH BOLT-IN 1-PIECE HUB AND BEARING)

See Figures 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19

The 1989-90 Chrysler vehicles were equipped with a either one of two possible hub and bearing assemblies: a pressed-in hub and bearing assembly or a bolt-in hub and bearing assembly. All of the 1991-95 Chrysler vehicles covered in this information use the bolt-in hub and bearing assembly. Both the press-in and bolt-in hub and bearing assemblies are replaced as a unit; disassembly of the hub is not recommended or necessary.

The Unit III Front Hub and Bearing is used on all 1991-95 and some 1988-90 front wheel drive Chrysler vehicles. All hub and bearing assemblies mount to the steering knuckle in the same fashion, but vary by the wheel size on the vehicle. Vehicles equipped with 14 in. wheels have a 4 in. (10.2cm) wheel mounting stud pattern. Vehicles equipped with 15 in. wheels have a 4 1 / 2 in. (11.4cm) wheel mounting stud pattern. If the hub and bearing assembly is to be replaced with a new one, be sure that the replacement assembly has the same size wheel mounting stud pattern as the original assembly.

These units are serviced only as a complete assembly. It is mounted to the steering knuckle by four mounting bolts that are removed from the rear of the steering knuckle.

  1. Remove the cotter pin, nut lock and spring washer from the threaded outer end of the front axle.
  2.  
  3. The car should be resting on the floor with brakes applied. Loosen the hub nut and lug nuts.
  4.  
  5. Raise and safely support the vehicle on jackstands. Remove the front wheel(s).
  6.  
  7. Remove the hub nut.
  8.  
  9. Remove the bolts and washers attaching the brake caliper to the steering knuckle. Slide the caliper off the knuckle and support it (with strong wire or cord) in a position that will not put excessive pressure on the brake hose.
  10.  
  11. Slide the rotor off the wheel studs.
  12.  
  13. Remove the cotter pin and nut from the tie rod stud. Press the tie rod end off the steering arm with an appropriate tool (C-3894 or equivalent).
  14.  
  15. Disconnect the brake hose retainer from the strut damper. Then, remove the pinch bolt which secures the ball joint stud in the steering knuckle.
  16.  
  17. Remove the outer sway bar mounting brackets and rotate the sway bar down and out of the way.
  18.  
  19. Push the lower control arm down to remove the ball joint stud from the bottom of the steering knuckle.
  20.  
  21. Pull the steering knuckle assembly out and away from the driveshaft.
  22.  

Care must be taken not to separate the inner CV-joint during this operation. Do not allow the driveshaft to hang by the inner CV-joint; the driveshaft must be supported.

  1. Remove the 4 hub and bearing assembly mounting bolts from the rear of the steering knuckle.
  2.  
  3. Remove the hub and bearing assembly from the steering knuckle. Be careful, the hub will simply fall out of the knuckle once the bolts have been removed.
  4.  

Replacement of the grease seal is recommended whenever this service is performed.

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Fig. Fig. 7: With the vehicle still on the ground, remove the cotter pin, nut lock and spring washer from the end of the axle



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Fig. Fig. 8: Loosening the hub nut while the vehicle rests on the ground is much easier and safer than with the vehicle on jackstands



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Fig. Fig. 9: After removing the brake caliper, support it from the vehicle frame with strong wire or cord



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Fig. Fig. 10: Once the brake caliper is removed from the hub, the brake rotor slides right off of the hub



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Fig. Fig. 11: Remove the cotter pin and nut from the tie rod stud, then pull the tie rod end from the knuckle



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Fig. Fig. 12: Loosen, then remove the pinch bolt and ...



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Fig. Fig. 13: ... disconnect the outer ends of the sway bar from the control arms



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Fig. Fig. 14: Pry the lower control arm down and remove the ball joint stud from the steering knuckle



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Fig. Fig. 15: Remove the brake caliper bracket to gain access to the front 2 hub-to-steering knuckle bolts



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Fig. Fig. 16: Remove the 4 hub-to-steering knuckle attaching bolts ...



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Fig. Fig. 17: ... and remove the hub assembly from the steering knuckle



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Fig. Fig. 18: Use the special installation tool to insert the new seal into the steering knuckle until flush, and ...



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Fig. Fig. 19: ... make certain to apply grease to the wear sleeve and seal as shown

To install:

WARNING
The knuckle and bearing mounting surfaces must be smooth and completely free of foreign material or nicks.

  1. Install the new hub and bearing assembly into the steering knuckle, if removed. Install the 4 hub and bearing assembly-to-steering knuckle attaching bolts and tighten them in a crisscross sequence to 45 ft. lbs. (65 Nm).
  2.  
  3. Position a new seal in the recess on the back of the steering knuckle. Assemble the Installer Tool (C-4698 or equivalent), then install the seal into the steering knuckle until it is fully seated in the recess. Inspect the wear sleeve on the CV-joint housing and replace it if necessary.
  4.  


WARNING
During any required service procedures that require the steering knuckle and driveshaft to be separated, both the seal and wear sleeve must be thoroughly cleaned and relubricated.

  1. Lubricate the full circumference of the seal (and wear sleeve) with Mopar® Multi-Purpose Lubricant or equivalent.
  2.  
  3. Slide the driveshaft back into the hub and bearing assembly and install the steering knuckle onto the ball joint stud.
  4.  
  5. Install the original (or equivalent) steering knuckle-to-ball joint stud, pinch bolt and nut. Tighten the pinch bolt to 105 ft. lbs. (145 Nm) for 1992-95 vehicles and to 70 ft. lbs. (95 Nm) for 1988-91 models.
  6.  
  7. Install the tie rod end into the arm of the steering knuckle. Install the tie rod end-to-steering knuckle attaching nut, then tighten to 35 ft. lbs. (47 Nm). Install a new cotter pin into the tie rod end.
  8.  
  9. Install the brake disc over the wheel studs. Then, install the brake caliper over the disc. Position the caliper adapter over the steering knuckle. Install the caliper adapter-to-steering knuckle attaching bolts and tighten them to 160 ft. lbs. (217 Nm).
  10.  
  11. Attach the brake hose retainer to the strut damper and tighten its mounting screw to 10 ft. lbs. (14 Nm).
  12.  
  13. Clean the axle threads, then install the washer and axle hub nut.
  14.  
  15. While having an assistant sit in the vehicle and apply the brakes, tighten the axle hub nut to 180 ft. lbs. (244 Nm). Install the spring washer, nut lock, and a new cotter pin (the nut lock has a slot in the outer edge which must line up with the hole through the end of the driveshaft). Finally, wrap the two ends of the cotter pin tightly around the end of the nut lock.
  16.  
  17. Install the wheel lug nuts as tight as possible with the vehicle still off of the ground.
  18.  
  19. Lower the vehicle until some of its weight is resting on the tires, then tighten the lug nuts to 95 ft. lbs. (129 Nm).
  20.  

Premier and Monaco

The front wheel hub can be removed without removing the bearing from the steering knuckle. However, the wheel hub must be removed before the bearing can be removed from the knuckle. The wheel hub and bearing are independently replaceable.

When servicing the steering knuckle, the wheel hub and bearing can and should be removed as a unit. Although the wheel bearing components can be disassembled for inspection, the bearing must be replaced as a unit only. If any of the bearing components are worn, damaged or defective, the complete bearing must be replaced.

  1. Disconnect the negative battery cable. Raise and safely support the vehicle.
  2.  
  3. Remove the halfshaft end nut. Push the halfshaft inward and disengage the shaft splines from the wheel hub splines. If it does not push out easily, use a screw type puller (steering wheel puller) to press the shaft out of the hub.
  4.  
  5. Install a puller plate that can be used with a slide hammer and pull the rotor/hub assembly from the steering knuckle. Use care to keep dirt and debris from the bearing as the hub assembly is removed.
  6.  
  7. If necessary, the rotor and hub can be separated by removing the rotor safety nuts. If these safety nuts are damaged by removal, replace with new ones.
  8.  
  9. Remove the Torx® bolts that attach the wheel bearing to the knuckle. Remove the bearing.
  10.  
  11. If the wheel hub and/or bearing are being replaced without the other, remove the outer race from the hub with a shop press and the appropriate adapters or with a brass drift and large hammer.
  12.  

To install:
  1. If a new wheel hub is being installed, force the original bearing outer race on the replacement hub with a shop press and a suitable length of steel pipe that has the correct inside diameter to fit around the hub. If a new bearing is being installed, do the same with the new race.
  2.  
  3. If the original wheel bearing is being installed, pack the bearing and lubricate both races (inner and outer) with an extreme pressure type wheel bearing lubricant.
  4.  
  5. If a replacement wheel bearing is being installed, prepare the bearing as follows:
    1. Remove and discard the plastic protective covers.
    2.  
    3. Locate, remove and discard the plastic protective sleeve from the replacement bearing bore.
    4.  
    5. Remove the inner and outer bearing races from the bearing.
    6.  
    7. Pack the bearing with lubricant which may be supplied with the replacement bearing.
    8.  
    9. Insert the bearing inner race in the bearing and force the bearing outer race on the wheel hub with a press and suitable length of steel pipe.
    10.  

  6.  
  7. Install the bearing to the knuckle and install the bolts. Tighten the bolts to 11 ft. lbs. (15 Nm).
  8.  
  9. Lubricate the bearing mating surface on the wheel hub bearing outer race with an extreme pressure type wheel bearing lubricant.
  10.  
  11. Position the wheel hub on the halfshaft and insert the hub into the wheel bearing. Tap the wheel hub with a brass hammer until 3 or 4 of the halfshaft threads extend beyond the hub.
  12.  
  13. If removed, install the brake rotor on the wheel hub, using new safety nuts if required.
  14.  
  15. Install the halfshaft-to-wheel hub nut. Use an appropriate holding tool to keep the hub from rotating while tightening the nut to 181 ft. lbs. (245 Nm) torque.
  16.  

Do not use an impact wrench to tighten the driveshaft-to-wheel hub nut. Use a torque wrench only to tighten the nut. It is also essential that the halfhaft-to-wheel hub nut be tighten to the specified torque. In addition to retaining the wheel hub on the halfshaft, the specified torque also establishes the wheel bearing preload.

  1. Install the brake caliper, tire and wheel assembly and lower the vehicle.
  2.  
  3. Connect the negative battery cable.
  4.  

Depress the brake pedal several times to seat the brake pads before moving the vehicle.

 
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