Buick Encore: Repair instructions

Rear wheel bearing and hub replacement (with disc brakes)

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

REPAIR INSTRUCTIONS

REAR WHEEL BEARING AND HUB REPLACEMENT (WITH DISC BRAKES)

Special Tools

CH 50559 Wheel Hub/Bearing Remover Kit

For equivalent regional tools, refer to Special Tools

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
3. Separate the wheel drive shaft from the wheel bearing/hub. Refer to Rear Wheel Drive Shaft Replacement .
4. Remove the rear brake shield. Refer to Rear Brake Shield Replacement .
5. Remove the rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement .

Fig. 1: Wheel Hub Bolts

6. Remove the 4 wheel hub bolts (1).

Fig. 2: Wheel Hub Assembly

7. Remove the wheel hub assembly (1) from the rear axle.

Fig. 3: Retaining Ring

NOTE: When removing the retaining ring, ensure the original position of retaining ring.

8. Remove the retaining ring (1).
9. Position the rear knuckle assembly on a press so that the wheel hub is horizontally placed using a suitable spacer.
10. Using the CH-50559-2 adaptor , the appropriate extension and press, remove the wheel hub from the wheel bearing.
11. If the inner race of the bearing is pulled out with the hub, remove the inner race from the hub using the appropriate tools.
12. Using the CH-50559-3 adaptor , the appropriate extension and press, remove the wheel bearing from the rear knuckle and discard it.

Installation Procedure

Fig. 4: Adapter, Press Extension And Bearing

1. Using the Ch-50559-4 adaptor (2) the appropriate extension and press (1), install the NEW bearing (3) into the rear knuckle until it is correctly seated.

Fig. 5: Special Tool

2. Position the Ch-50559-4 adaptor (1) to the inside of the bearing and position the Ch-50559-2 adaptor (2) and the appropriate extension on the wheel hub.

Fig. 6: Retaining Ring

NOTE: Ensure that the retaining ring is seated in the original position.

3. Using the appropriate tool, install the retaining ring (1).

Fig. 7: Wheel Hub Assembly

4. Position the wheel bearing/hub assembly (1) in the rear axle.

Fig. 8: Wheel Hub Bolts

CAUTION: Refer to Fastener Caution .

5. Install the 4 wheel hub bolts (1) and tighten to 60 (44 lb ft)
6. Install the rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement .
7. Install the rear brake shield. Refer to Rear Brake Shield Replacement
8. Install the NEW wheel drive shaft nut. Refer to Rear Wheel Drive Shaft Replacement .
9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
10. Remove the support and lower the vehicle.

Rear wheel bearing and hub replacement (with drum brakes)

Fig. 9: Rear Wheel Bearing And Hub (With Drum Brakes)

Rear Wheel Bearing and Hub Replacement (With Drum Brakes)

STRUT AND SHOCK ABSORBER INSPECTION

NOTE: The shock absorber assembly DOES NOT have to be removed from the vehicle to perform the following inspection procedure.

NOTE: A light film of oil on the top portion of the lower shock absorber tube is normal.

DO NOT replace the shock absorber for this condition.

Fig. 10: Identifying Shock Absorber Conditions

Condition 1

Oil or fluid residue only on the bottom or top of the shock absorber and not originating from the shaft seal, is not a shock absorber related problem. DO NOT replace the shock absorber, look for other external leaks.

Condition 2

Light film/residue on approximately 1/3 (a) or less of the lower shock tube (A) and originating from the shaft seal, is a NORMAL condition. DO NOT replace the shock absorber.

Condition 3

Oil drip or trail down the lower shock tube and originating from the shaft seal, is an ABNORMAL condition.

Replace the shock absorber.

Condition 4

An extreme wet film of oil covering more than 1/3 (b) of the lower shock tube and originating from the shaft seal (B), is an ABNORMAL condition. Replace the shock absorber. Refer to Shock Absorber Replacement.

Inspection

1. Verify the customer's concern is present. If the concern is present, continue to the next step. If the concern is not present, then the vehicle is operating normally.

NOTE: The shock absorber assembly DOES NOT have to be removed from the vehicle to perform the following inspection procedure.

2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
3. Visually inspect each of the shock absorbers for external fluid leaks. Refer to the following conditions 1, 2 , 3 , and 4 for visual inspection.

• If conditions 1 or 2 are found, continue to step 4.
• If conditions 3 or 4 are found, replace shock absorber. Refer to Shock Absorber Replacement

4. If equipped with electronic suspension control system, ensure that the system is working properly. Refer to Diagnostic Starting Point - Electronic Suspension Control.
5. Use your hands in order to lift up and push down on each corner of the vehicle 3 times. Remove your hands from the vehicle. If the corner motion exceeds 2 cycles, replace the shock absorber. If the shock absorber does not exceed 2 cycles, NO repair is necessary.

SHOCK ABSORBER REPLACEMENT

Fig. 11: Shock Absorber

Shock Absorber Replacement

SHOCK ABSORBER DISPOSAL

Fig. 12: Drilling Hole In Shock Absorber At Centerpunched Locations

WARNING: Gas charged shock absorbers contain high pressure gas. Do not remove the snap ring from inside the top of the tube. If the snap ring is removed, the contents of the shock absorber will come out with extreme force which may result in personal injury.

WARNING: To prevent personal injury, wear safety glasses when centerpunching and drilling the shock absorber. Use care not to puncture the shock absorber tube with the centerpunch.

1. Make an indentation 10 mm (0.4 in) from the bottom (4) of the tube (3) using a centerpunch.
2. Clamp the shock absorber in a vise horizontally with the shock absorber rod (1) completely extended.
3. Drill a hole in the shock absorber at the centerpunch (4) using a 5 mm (3/16 in) drill bit. Gas or a gas/oil mixture will exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain the escaping oil.
4. Make an indentation in the middle (2) of the tube (3) with a centerpunch.
5. Drill a second hole in the shock absorber at the centerpunch (2) using a 5 mm (3/16 in) drill bit. Oil will exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain the escaping oil.
6. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan horizontally with the holes down. Move the rod (1) in and out of the tube (3) to completely drain the oil from the shock absorber.

Rear spring replacement

Fig. 13: Rear Spring And Insulators

Rear Spring Replacement

Rear axle replacement

Special Tools

• CH 51035 Rear Axle Supporter Adapter
• DT 50187 Rear Axle Supporter

For equivalent regional tools, refer to Special Tools .

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the tires and wheel assembly. Refer to Tire and Wheel Removal and Installation .
3. Remove the park brake cables from the rear axle.

NOTE: Cap the rear brakes lines so as to prevent the hydraulic brake system from being contaminated.

4. Remove the rear brake line from the rear axle.

NOTE: Relocate the rear brake assembly to the side using mechanics wire.

5. Remove the rear spring. Refer to Rear Spring Replacement.
6. Remove the rear wheel bearing/hub from the rear axle. Refer to Rear Wheel Bearing and Hub Replacement (With Disc Brakes), Rear Wheel Bearing and Hub Replacement (With Drum Brakes).
7. Install the DT 50187 supporter with the CH 51035 adapter on a hydraulic jack or an appropriate support, and using a hydraulic jack stand with the supporter, support the rear axle assembly.

Fig. 14: Rear Axle Mounting Bracket

8. Using a bright colored paint, mark (1) the outline of the rear axle mounting bracket to the chassis to properly align the rear axle to the chassis for installation.

Fig. 15: Rear Axle Mounting Bolts

9. Remove the rear axle mounting bolts (1).

Fig. 16: Rear Axle Assembly

10. Lower the hydraulic jack with the rear axle and remove the rear axle assembly (1).

Installation Procedure

Fig. 17: Rear Axle Assembly

1. Using a hydraulic jack stand with the DT 50187 supporter and the CH 51035 adapter , position the rear axle assembly (1) in the vehicle.

Fig. 18: Rear Axle Mounting Bracket

2. Align the mounting points of the rear axle to the painted outline (1) on the chassis.

Fig. 19: Rear Axle Mounting Bolts

3. Install the rear axle mounting bolts (1).

CAUTION: Refer to Fastener Caution .

4. Using the EN-45059 meter , tighten the rear axle mounting bolts (1) to:

• First Pass 160 N.m (118 lb ft)
• Final Pass plus 38 degrees

5. Install the rear spring. Refer to Rear Spring Replacement.
6. Install the rear wheel bearing/hub mounting bolts to the rear axle. Refer to Rear Wheel Bearing and Hub Replacement (With Disc Brakes), Rear Wheel Bearing and Hub Replacement (With Drum Brakes).
7. Install the rear park brake cables.
8. Install the rear brake lines on the rear axle.
9. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) , Hydraulic Brake System Bleeding (Pressure) .
10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
11. Remove the supports and lower the vehicle.

Wheel stud replacement

Special Tools

CH 43631 Ball Joint Separator

For the regional equivalent tool, refer to Special Tools.

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the wheel bearing and hub assembly. Refer to Rear Wheel Bearing and Hub Replacement (With Disc Brakes), Rear Wheel Bearing and Hub Replacement (With Drum Brakes).

Fig. 20: Wheel Bearing Hub/Assembly And Separator

NOTE: Ensure that the wheel bearing and hub flange is securely tighten in the vise.

3. Install the wheel bearing and hub assembly (2) in a suitable vise.
4. Using the CH 43631 separator (1), remove and discard the wheel stud from the wheel bearing and hub assembly.

Installation Procedure

Fig. 21: Wheel Stud

NOTE: Ensure that the wheel stud is properly aligned in the wheel hub flange.

1. Position the NEW wheel stud (1) in the wheel bearing and hub assembly

Fig. 22: Wheel Nut And Washers

2. Using three washers (2) and an old wheel nut (1), tighten the wheel nut (1) until the wheel stud is seated in the wheel bearing and hub flange.
3. Remove the wheel bearing and hub assembly from the vise.
4. Install the wheel bearing and hub assembly. Refer to Rear Wheel Bearing and Hub Replacement (With Disc Brakes), Rear Wheel Bearing and Hub Replacement (With Drum Brakes).
5. Remove the support and lower the vehicle.

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