What size bolts retain the front wheel bearing assembly?

its m14x2x50.30thd and washer is retained on bolt [part of bolt]best bet go to chevy-gmc-or caddy dealer for bolt their about $8 most auto stores dont carry the bolts

Disassembly 1. Remove oil seal from front wheel hub. 2. Remove front wheel hub assembly with suitable tool.

3. Remove retaining ring. If the bearing inner race remains on wheel hub, grind a section of inner race until approximately 0.020 in (0.5 mm) remains. Remove race with a chisel.

4. Remove wheel bearing with suitable tool.

• Do not remove dust cover unless necessary. • Do not reuse dust cover if removed. 5. Mark relative positions of dust cover and knuckle for proper reassembly. 6. Remove dust cover with a chisel.

• Do not remove wheel hub bolt unless necessary. • Do not reuse wheel hub bolt if removed. 7. Remove wheel hub bolt with a press.

Assembly 1. Press in new wheel studs. Front wheel hub press in either bolt turning or loosening by the torque of 108.5 lb•ft (147 N•m, 15 kg•m) shall not be premissible.

2. Mark new dust cover to match the removed dust cover. 3. Align mark on new dust cover with knuckle. 4. Install new dust cover with suitable tool.

5. Install new wheel bearing with suitable tool. 6. Install front wheel hub assembly with suitable tool.

• Use a new oil seal, and apply grease to seal. • Install oil seal so that it is flush with knuckle. 7. Install new oil seal with SST(0K993 331 016).

Removal

1. Raise and support the vehicle.
2. Remove the wheel and tire assembly.
3. Remove the brake caliper, caliper anchor, rotor and ABS wheel speed sensor.
4. Remove the cotter pin, nut retainer and axle hub nut.
5. Remove the hub/bearing mounting bolts from the back of the steering knuckle. Remove hub/bearing from the steering knuckle and off the axle shaft.

Installation

1. Install the hub/bearing to the knuckle.
2. Install the hub/bearing-to-knuckle bolts and tighten to specification.
3. Install the hub washer and nut. Tighten the hub nut to specification. Install the nut retainer and a new cotter pin.
4. Install the brake rotor, caliper anchor, caliper and ABS wheel speed sensor.
5. Install the wheel and tire assembly.
6. Remove the support and lower the vehicle.

Front (4 Wheel Drive) To Remove:

1. Raise and support the vehicle
2. Remove or disconnect the following:
   • Tire and wheel assembly
   • Rotor (See: Disc Brake Rotor)
   • Wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle
   • Electrical connection for the wheel speed sensor
   • Front drive halfshaft assembly (See: Halfshaft)
   • Hub and bearing assembly mounting bolts 4WD front hub
     
     
   • Hub and bearing assembly

To Install:

1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly
2. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent
3. Install or connect the following:
   • Hub and bearing assembly
   • Hub and bearing assembly mounting bolts and tighten the hub to knuckle bolts; Torque to: 133 ft. lbs. (180 Nm)
   • Front drive halfshaft assembly (See: Halfshaft)
   • Electrical connection for the wheel speed sensor
   • Wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle and tighten the bolt; Torque to: 106 inch. lbs. (12 Nm)
   • Rotor (See: Disc Brake Rotor
   • Tire and wheel assembly
   Wheel lug nut tightening sequence
   
   
4. Torque the lug nuts to specification
5. Test drive the vehicle to confirm the repairs

Hi,welcome to fixya.


The rear wheel bearings are not adjustable. If the bearings make noise or become loose, they must be replaced.

Removal & Installation

With Drum Brakes

NOTE The wheel bearings are contained within the wheel hub and must be replaced as an assembly.

1. Disconnect the negative battery cable.
2. Raise and safely support the vehicle.
3. Remove the wheel and tire assembly.
4. Remove the anti-lock sensor retaining bolt and remove the sensor.
5. Remove the brake drum retainer and the brake drum.
6. Remove the hub retaining nut dust cover.
   NOTE Do not use an impact gun to remove the hub retainer nut.
   
   
   Fig. Using suitable tools loosen and . . .
   
   
   Fig. . . . remove the hub retaining nut dust cover
   
7. Remove the wheel hub retainer nut.
   
   Fig. Using suitable tools, loosen and . . .
   
   
   Fig. . . . remove the hub retaining nut
   
8. Slide the hub and bearing assembly off of the spindle.
   
   Fig. Carefully slide the hub and bearing assembly off of the spindle
   

To install:

1. Reinstall the hub and bearing assembly to the spindle.
2. Reinstall the hub retainer nut. Tighten the retainer nut to 170-192 ft. lbs. (230-260 Nm).
   WARNING Do not use an impact gun to tighten the hub retainer nut, otherwise the bearings may be damaged.
   
3. Install the hub retaining nut dust cover.
4. Reinstall the brake drum.
5. Check the brake shoes for proper adjustment.
6. Reinstall the anti-lock sensor and the retaining bolt. Tighten the retaining bolt to 7-8 ft. lbs. (9-11 Nm).
7. Reinstall the wheel and tire assembly. Tighten the wheel nuts to 62 ft. lbs. (85 Nm).
8. Lower the vehicle until the wheels are supporting the vehicles weight. This will properly load the suspension.
9. Tighten the spindle-to-control arm bolt to 52-79 ft. lbs. (70-98 Nm).
10. Tighten the tie rod-to-spindle bolt to 75-102 ft. lbs. (102-135 Nm).
11. Finish lowering the vehicle.

Road test the vehicle and check for proper operation.
Thank You for using fixya........iluv2fish........Ray........

No, but I would replace the rotors. Turning them usually winds up getting them warped as soon as they heat up and/or you hit a puddle of water..also, you will need a torque wrench and standard automotive tools, Jack and stands and a vice..

1 Place the Transfer shift in the 2H position.
Raise and support the front of the vehicle safely on jackstands.
2 Remove the wheel and tire assembly.
3 Loosen the hub to rotor retainer bolts.
4 Remove the brake caliper mounting bolts and carefully remove the caliper (along with the brake pads) from the rotor. Do not disconnect the brake line. 5 Secure the caliper out of the way with the flexible line still connected.

Once the hub/rotor is removed from the vehicle the wheel bearings may be cleaned and repacked or the bearings and races may be replaced. For more information, please refer to the wheel bearing procedures in General Information & Maintenance of this manual.

6 Remove the hub nut using hub wrench J-29020-A or equivalent.
7 Remove the hub cap assembly retainer bolts.
8 Remove the spindle nut, washers, and other components. Remove the hub/rotor, being careful not to drop the outer wheel bearings. As the hub/rotor is pulled forward, the outer wheel bearings will often fall forward.
9 Once the hub/rotor is removed, remove the retainer bolts securing the rotor and hub together. Inspect the hub and replace if needed.

To install:
1 With the rotor secured in a vise, attach the wheel hub to the rotor using the retainer bolts. Tighten the bolts to 47-58 ft. lbs. (61-75 Nm). Apply 2.12 oz. (60 gm) of grease to the hub before installing.
2 Carefully install the wheel hub/rotor over the spindle.
3 Install the bearings washers and other components. 4 Position the lock washer so the hub cap assembly bolt holes line up properly.
5 Install the spindle washer and nut and secure using hub wrench J-29020-A or equivalent. Preload the bearing to 3.31 lbs. (1.5 kg).
6 Install the inner cam and any shims. Install the hub cap assembly and secure in place with retainer bolts. 7 Tighten grade M8 bolts to 17-22 ft. lbs. (22-29 Nm), tighten grade M10 bolts to 40-47 ft. lbs. (52-61 Nm).
8 Install the brake caliper.
9 Install the tire and wheel assembly.
10 Remove the supports and carefully lower the vehicle.

2003 Hummer H2 V8-6.0L VIN U
Wheel Bearing: Service and Repair
WHEEL HUB, BEARING, AND SEAL REPLACEMENT
REMOVAL PROCEDURE
NOTE: Never place vehicle on the ground with the halfshaft removed or the halfshaft nut torqued improperly. Otherwise, bearing seals may become
dislodged causing premature wear and/or damage to the hub and bearing assembly.
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the tire and wheel.
3. Remove the rotor.
4. Remove the wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle.
5. Disconnect the electrical connection for the wheel speed sensor.
6. Remove the wheel driveshaft nut retaining cover.
7. Remove the wheel driveshaft assembly retaining nut and washer from the wheel driveshaft assembly.
Disengage the wheel driveshaft from the wheel hub and bearing.
8. Remove the wheel hub and bearing mounting bolts.
9. Remove the wheel hub and bearing and splash shield from the vehicle.
10. Remove the O-ring seal from the steering knuckle bore.
11. Remove the wheel speed sensor from the wheel hub and bearing.
12. Clean and inspect the O-ring seal.
13. Replace the seal it the following conditions exist:
- Nicks
- Cuts
- Dry or brittle
- Compression set
INSTALLATION PROCEDURE
1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
2. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
3. Install the O-ring to the steering knuckle.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the wheel speed sensor to the wheel hub and bearing.
Tighten
Tighten the sensor mounting bolt to 18 N.m (13 lb ft).
5. Install the wheel hub and bearing and splash shield to the vehicle.
6. Install the wheel hub and bearing mounting bolts.
Tighten
Tighten the wheel hub to knuckle bolts to 180 N.m (133 lb ft).
7. Install the nut and washer retaining the wheel drive shaft assembly to the wheel hub and bearing.
Tighten
Tighten the nut to 210 N.m (155 lb ft).
8. Connect the electrical connection for the wheel speed sensor.
9. Install the wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle.
Tighten
Tighten the bolt to 12 N.m (106 lb in).
10. Install the rotor.
11. Install the tire and wheel.
12. Lower the vehicle.

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Item Part Number Description 1 — Cotter Pin 2 — Nut Retainer 3 1131 Insulator 4 3B477 Front Axle Wheel Hub Retainer 5 1195 Front Wheel Outer Bearing Retainer Washer 6 1104 Wheel Hub 7 1107 Lug Bolt 8 3K050 Snap Ring 9 3123 Front Wheel Bearing 10 2K004 Front Disc Brake Rotor Shield 11 3130 Front Wheel Knuckle

Wheel Hub, Wheel Knuckle and Wheel Bearing SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Tie Rod End Separator T85M-3395-A
Removal

1. Raise and support the vehicle.
   
2. Remove the wheel (1007) and tire assembly.
   
3. NOTE: It is not necessary to disconnect the front brake hose (2078).
   
   Remove the disc brake caliper (2B120) and suspend it with mechanic's wire out of the way. Refer to Section 06-03 for the removal procedure.
   
4. Remove the front disc brake rotor (1125).
   
5. Remove and discard the cotter pin.
   
6. Remove the nut retainer and insulator.
   
7. Remove the front axle wheel hub retainer (3B477) and the front wheel outer bearing retainer washer (1195).
   
   
   
   
   
8. Remove and discard the cotter pin from the front suspension lower arm ball joint (3050).
   
9. Loosen the front suspension lower arm ball joint nut until it contacts the front wheel driveshaft joint.
   
   
   
   
   
10. Strike the front wheel knuckle with a hammer while pulling down on the front suspension lower arm (3078) until the front suspension lower arm ball joint separates from the front wheel knuckle.
    
    
    
    
    
11. Remove the front suspension lower arm ball joint nut.
    
    
    
    
    
12. Remove the front suspension lower arm ball joint from the front wheel knuckle.
    
13. Remove and discard the cotter pin.
    
    
    
    
    
14. Remove the tie rod end nut.
    
    
    
    
    
15. Use Tie Rod End Separator T85M-3395-A to separate the tie rod end (3A130) from the front wheel knuckle.
    
    
    
    
    
16. Remove the front brake anti-lock sensor bolt.
    
    
    
    
    
17. Remove the two front shock absorber-to-front wheel knuckle nuts.
    
    
    
    
    
18. Remove the two front shock absorber-to-front wheel knuckle bolts.
    
19. Remove the front shock absorber (18124) from the front wheel knuckle.
    
20. Use 2-Jaw Puller D80L-1002-L, or equivalent, to separate the front wheel driveshaft and joint (3B436) from the front wheel knuckle.
    
21. Remove the front wheel hub, front wheel knuckle and front wheel bearing as an assembly from the vehicle.
22. If necessary, match mark and remove the steering stop bolt and steering stop bolt jam nut from the front wheel knuckle.
    
    
    
    
    

Installation

1. Position the front wheel hub, front wheel knuckle and front wheel bearing as an assembly on the front wheel driveshaft and joint.
   

1. Install the front wheel knuckle into the front shock absorber.
   

1. Install the two front shock absorber-to-front wheel knuckle bolts.
   

1. Install the two front shock absorber-to-front wheel knuckle nuts. Tighten the front shock absorber-to-front wheel knuckle nuts to 113-123 Nm (83-91 lb-ft).
   
   

Jack up vehicle and support with jack stands
Take off wheel
remove brake caliper
remove caliper bracket
remove rotor
remove axle retaining nut cotter pin
remove axle retaining nut
remove axle from output flange
pull axle out of vehicle
hub and bearing assembly held in by 4 bolts

installation is reverse of removal. You will need to find out the torque specs for the axle retaining nut.