How rear wheel bearing adjustment rocky ute 1990

Wheel Bearings

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   
   Rear wheel Brake drum Hub cover Cotter pin Lock nut cover
3. Adjust the locknut to achieve wheel bearing play of 0.001-0.006 inches (0.025-0.152 mm).

1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
2. Remove or disconnect the following:
   
   Rear wheel Brake drum Hub cap Cotter pin Lock nut cover Lock nut Wheel bearing retainer washer and the outer wheel bearing Hub assembly Grease seal Inner wheel bearing
3. Clean and inspect the wheel bearings and races for unusual wear or damage. Replace parts as necessary.

1. Pack the wheel bearings with grease for assembly.
2. Install or connect the following:
   
   Inner wheel bearing Grease seal Hub assembly Lock nut. Adjust the locknut to achieve wheel bearing play of 0.001-0.006 inches (0.025-0.152 mm). Lock nut cover Cotter pin Hub cap Brake drum Rear wheel
   

Adjustment

1. Place parking brake lever in -full released- position.
2. Raise and support vehicle.
3. Remove plug in parking brake shoe support to access adjuster star-wheel.
4. Through the access hole, rotate the adjuster star wheel in the following direction to expand the shoes outward against the drum:
   1. Left brake - Rotate star-wheel toward rear of vehicle.
   2. Right brake - Rotate star-wheel toward front of vehicle.
5. Using an appropriate tool, turn adjuster star wheel until wheel will not rotate (dead lock).
6. Back off adjuster six detents (teeth).
7. Rotate wheel, checking for light drag. If drag is too heavy, continue to back off adjuster one detent at a time until light drag is present. Do not back off star-wheel more than 17 detents from wheel lock.
8. Install access plug.
9. Adjust opposite wheel parking brake shoes using same method.
10. Lower vehicle.
11. Apply and release parking brake lever once to ensure proper operation of parking brakes.

Removal & Installation NOTE The following procedure may be used to remove shoes on either side of the vehicle.

1. Lock out automatic adjuster in parking brake lever.
2. Raise and support vehicle.
3. Access and remove rear hub and bearing.
4. Remove parking brake cable bolt at knuckle.
5. Completely back off parking brake shoe adjustment.
6. Remove parking brake shoe adjuster spring.
7. Remove shoe adjuster.
8. Remove upper brake shoe hold-down clip and pin.
9. Remove lower brake shoe hold-down clip and pin.
10. Remove upper and lower shoes with return spring from shoe actuator.
11. Remove return spring from shoes.
    
    

    Fig. View of the actuator (1), support (2), adjuster spring (3), return spring (4), caliper adapter (5), shoes (6), hold-down clips and pins (7) and adjuster (8)
    

1. Install return spring between upper and lower shoes.
   NOTE Before installing shoes on actuator, make sure actuator hooked to rear cable is positioned with word -UP- facing outward.
2. Install upper and lower shoes with return spring on shoe actuator located on parking brake cable.
3. Install lower brake shoe hold-down pin through rear of support and lower shoe, then install hold-down clip.
4. Install upper brake shoe hold-down pin through rear of support and upper shoe, then install hold-down clip.
5. Install shoe adjuster. Place end of adjuster with star wheel upward.
6. Install parking brake shoe adjuster spring.
7. Install bolt securing parking brake cable to knuckle and tighten bolt to 21 ft. lbs. (28 Nm).
8. Using Brake Shoe Gauge, Special Tool C-3919, or equivalent, measure inside diameter of parking brake drum portion of rotor.
9. Place Gauge over parking brake shoes at widest point.
10. Using adjuster star wheel, adjust parking brake shoes until linings on both park brake shoes just touch jaws on gauge. This will give a good preliminary adjustment of parking brake shoes, before a final adjustment is made at end of this procedure.
11. Install hub and bearing with wheel speed sensor as well as all components necessary to access it.
12. Lower vehicle.
13. Unlock automatic adjuster in parking brake lever.
14. Perform final adjustment of parking brake shoes

15. 
    Adjustment This vehicle is equipped with permanently sealed rear wheel bearings. There is no periodic lubrication or maintenance recommended for these units.
    

    
    Removal & Installation

    1. Raise and support vehicle.
    2. Remove wheel mounting nuts, then tire and wheel assembly.
    3. If equipped with AWD:
       1. Remove cotter pin, nut lock and spring washer from half shaft.
       2. While a helper applies brakes to keep hub from turning, remove hub nut and washer.
    4. Remove brake caliper and rotor from hub and bearing assembly.
       
       

       Fig. Hub assembly
       

    5. Disconnect vehicle wiring harness connector at wheel speed sensor connector.
    6. Unclip wheel speed sensor connector from spare tire mounting support.
    7. Disconnect two sensor cable routing clips on rear suspension crossmember.
    8. Disconnect two sensor cable routing clips along toe link.
    9. Disconnect sensor cable from bracket on brake support.
       
       
    10. Completely loosen, but do not remove four bolts fastening hub and bearing in place. Once loosened from threads in hub and bearing, push bolts up against rear of hub and bearing to keep brake support plate in place when hub and bearing is removed.
        
        

        Fig. Rear hub and bearing mounting bolts
        

    11. Pull hub and bearing off knuckle and half shaft (if equipped with AWD), then thread wheel speed sensor cable through hole in brake support plate as it is removed with hub and bearing.
        
        
    To install:
    
    1. Position hub and bearing bolts though rear of knuckle and parking brake support just enough to hold support in place as hub and bearing is installed.
    2. Install hub and bearing by first feeding end of wheel speed sensor cable through hole in bottom of parking brake support. As this is being done, if equipped with AWD, slide hub and bearing onto half shaft. Place hub and bearing through brake support, onto knuckle, lining up mounting bolt holes with bolts and placing wheel speed sensor head at bottom.
    3. Install four bolts fastening hub and bearing in place. Tighten mounting bolts to 60 ft. lbs. (81 Nm).
    4. Place wheel speed sensor cable routing grommet into bracket on parking brake support.
    5. Route wheel speed sensor cable along toe link and rear suspension crossmember connecting routing clips where shown.
    1. Connect vehicle wiring harness to wheel speed sensor connector.
    2. Install brake rotor and caliper.
    3. If equipped with AWD:
       1. Install washer and hub nut on end of half shaft.
       2. While a helper applies brakes to keep hub from turning, tighten hub nut to 180 ft. lbs. (244 Nm).
       3. Install spring washer, nut lock and cotter pin on end of half shaft.
    4. Install tire and wheel assembly. Install and tighten wheel mounting nuts to 100 ft. lbs. (135 Nm).
    
    
    

    
    
    

1. Raise the front of the truck and support it with safety stands. Remove the wheels.
2. Remove the brake caliper and suspend it with wire, out of the way. Remove the caliper torque plate if equipped.
3. Remove the dust cap and then remove the cotter pin, lock washer (if equipped) nut lock and nut.
4. Pull the hub/disc assembly off the spindle with the outer bearing. Don't let the bearing fall out.
5. Pry the inner oil seal out and remove the inner bearing. To install:
   
6. Clean and inspect the bearings and outer races.
7. Using a brass drift and a hammer, drive out the bearing outer race. Press a new one into position.
8. Pack the bearings with grease until it oozes out the other side. Coat the inside of the hub and cap with grease.
9. Position the inner bearing into the hub, coat the oil seal with grease and press it into the hub.
10. Press the hub assembly onto the spindle and install the outer bearing and thrust washer.
11. Install the hub nut. Turn the hub a few times to seat the bearings and then loosen the nut until there is 0mm axial play. Using a spring tension gauge, check that the preload (with new grease seal installed) is 2.2–6.4 lbs. (9.8–28.4N)
12. Install the lock-nut, new cotter pin and hub grease cap.
13. Install the brake torque plate. Install the brake caliper.
14. Install the wheels and lower the truck.

1. Thoroughly clean all parts and pack the wheel bearings.
2. Apply grease to threaded portions of the spindle, grease seal lip and wheel hub.
3. Tighten the wheel bearing lock-nut with a socket and torque wrench to 58–72 ft. lbs. (78–98 Nm).
4. Rotate the hub in both directions a few times to seat the bearings. Loosen wheel bearing lock-nut.
5. Retighten the lock-nut to 0.4–1.1 ft. lbs. (0.5–1.5 Nm).
6. Turn wheel hub several times in both directions.
7. Retighten the lock-nut to 0.4–1.1 ft. lbs. (0.5–1.5 Nm). Fig. 1: Exploded view of the front axle assembly — 2wd models
   Fig. 2: Removing the bearing outer races
   Fig. 3: Packing the wheel bearing with grease
   Fig. 4: Pack the lip cavity of grease seal with grease
   Fig. 5: Exploded view of the front axle assembly — 4wd models
   
   
8. Measure wheel bearing axial end-play. The wheel bearing end-play specification is 0.
9. Install lock washer by tightening the lock-nut within 15–30 degrees.
10. Turn wheel hub several times in both directions. Wheel bearing should be seated correctly.
11. If necessary, measure wheel bearing preload. NOTE: Measure wheel bearing preload with a spring-type gauge; measure at wheel hub bolt, with tire removed. The hub assembly should rotate with 1.6–4.7 lbs. (0.73–2.13 kg) of pressure.
    

1. Raise and support the vehicle.
   

1. Remove the wheel and tire assembly.
   

1. Remove the hub grease cap (1131) from the wheel hub.
   

1. If equipped with disc brakes, remove the rear disc brake caliper (2552) and rear disc brake rotor (2C026). Refer to Section 06-04 for the removal procedure.
   

1. If equipped with drum brakes, remove the two brake drum screws and the brake drum (1126).
   

1. Unstake the rear axle wheel hub retainer (4B477) securing the wheel hub to the rear wheel spindle (4A013). Remove and discard the rear axle wheel hub retainer.
   
2. Remove the wheel hub from the rear wheel spindle.

1. Raise and support the rear of the vehicle on jackstands.
   
2. Remove the wheels and tire assemblies.
   
3. Remove the brake shoe adjusting slot cover from the rear of backing plate.
   
4. Insert a thin tool through the adjusting slot and hold the adjusting lever away from the star wheel.
   
5. Insert an adjusting tool and back off the star wheel by prying downward with the tool.
   
6. Remove the center hub dust cover, nut, washer, brake drum, hub and wheel bearings.
   

1. Inspect the brake lining and drum for wear.
   
2. Inspect the wheel cylinder for leakage. Service as required.
   
3. Remove, clean, inspect and repack the wheel bearings.
   
4. Install the brake drum and tighten the hub nut to 20-25 ft. lbs. (27-34 Nm), then back off the nut until bearing pressure is released.
   
5. Retighten the nut finger tight, align the cotter pin hole and install the cotter pin.
   
6. Adjust the rear brakes as described in the beginning of this section.