84 chevy 4 wheel drive auto hub removial

QU40221 19 Spline Outer Axle Shaft for 1977 to 1991 Chevy, GMC Corporate GM 10 Bolt Front Axle is a genuine original equipment outer axle stub shaft for all GM 10 Bolt front axles in 1977 to 1991 Chevy Blazers, GMC Jimmys, and Suburbans, plus Chevy, GMC 4x4 1/2 ton and 3/4 ton Pickups. The splined end on these new axle shafts has three snap ring grooves in three places so they are compatible with all types of automatic and manual lockout hubs plus all full-time solid splined drive gears.

Also available while supplies last: QU40221U Used Outer Axle Shaft with 3 snap ring grooves and QU40660UUsed Inner Axle Shafts with 2 snap ring grooves (QU40660U is not compatible with automatic locking hubs)



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I presume you are trying to REPLACE the hub assembly? If so, you do not have to worry much about dammaging it. Simply take the three bolts out of the inboard side of the steering knuckle and beat it with a large hammer.

If your van is equiped with All-Wheel Drive, you must remove the large nut from the axle first to do this. Then the axle can be pushed in far enough to gt clearance to get the bolts out of the steering knuckle that hold the bearing assembly. Two-Wheel Drive is much easier.

It is also recommended that you disconnect the wheel speed sensor wire harness before trying to get the hub loose. Damage to the vehicle harness can result if the bearing comes out suddenly and pulls on the cable.

It depends. For a regular 1/2 ton and most 3/4 tons no, just remove the caliper and the rotor comes off over the wheel bearing hub. 1 ton suburbans, require more work, you will require a large socket to remove the axle nut, and a slide hammer or 3 jaw puller big enough to pull off the rotor and wheel bearing as an assembly. The rotor on some 3/4 tons and all 1 tons bolt from behind thru the wheel bearing and need to be removed together. The wheel bearing has to be unbolted from the spindle, then the wheel studs have to be punched thru to remove the rotor. The splines on the wheel studs hold the rotor to the wheel bearing. 1 ton will say 3500 on the side, 2500 for 3/4 ton and 1500 for 1/2 tons.

sometimes need to remove hub and clean grease out and lightly regrease. or may need to replace hubs

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.

8–Stud Rotor

1. Raise and support the vehicle.
   
2. Remove the wheel.
   
3. Remove the hub extension.
   
4. Remove the brake caliper assembly.
   
5. Remove the axle nut cotter pin. Remove the axle nut.
   
6. Disconnect the ABS wheel speed sensor wire from under the hood. Remove the sensor wire from the frame and steering knuckle, if equipped.
   
7. Back off the hub/bearing mounting bolts 1/4 inch each. Then tap the bolts with a hammer to loosen the hub/bearing mounting bolts.
   
8. Remove the bolts and remove the hub/bearing assembly.
   

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.

RAVE says the following:
1) Release ABS Sensor harness grommet from inner wing valance and disconnect multi plug.
2) Raise front of vehicle.
3) Remove road wheel.
4) Pull ABS Sensor harness through aperture into wheel arch.
5) Release harness from brackets on inner wing valance, suspension turret and front hub.
6) Release stake from drive shaft nut
7) Remove drive shaft nut with assistance & discard.
8) Remove front brake disk (Remove calliper, pad holder, screw and tap to remove)
9) Remove 4 bolts securing wheel hub to steering knuckle.
10) Release wheel hub from steering knuckle then remove wheel hub and drive shaft assembly from axle. DO NOT REMOVE ABS SENSOR FROM HUB. HUB AND SENSOR ARE SUPPLIED AS AN ASSEMBLY.
11) Position the wheel hub and drive shaft on a press, place supports beneath the wheel studs and press the drive shaft from the wheel hub.
12) Remove drive shaft oil seal from axle casing.

Refit is mostly the reverse, you need to take care to lubricate things in the right places and put loctite on the drive shaft and locate the loom and torque everything right.

there should be 5 or 6 allen bolts around hub. remove these and cover will come off then there is a snap ring on axle and one around the edge of hub remove thes and will slide off

The rotor and hub assembly are held together by the studs,you must first remove the 4-wheel drive hub assembly,then the wheel bearing nuts,and pull the hub and rotor off as a unit. Next lay it(back down) on a piece of wood, using a drift punch drive the studs out. Turn it over ,lay it(face down) on a block of wood, line the new stud splines up with the grooves in the hub and drive them in with the punch and reassemble. A set of dentist style picks will be helpful with the clip in the 4wd hub and a 4 lug 4wd nut wrench will be needed.