Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Wheel Bearing: Adjustments
Rear
Chevrolet Full Floating Axle
REAR WHEEL BEARINGS ADJUSTMENT
Before checking wheel bearing adjustment, make sure brakes are fully released and do not drag. Check bearing play by grasping tire at top and pulling
back and forth or by using a pry bar under tire. If bearings are properly adjusted, movement of brake drum in relation to brake flange plate will be barely
noticeable and wheel will turn freely. If movement is excessive, adjust bearings as follows:
1.
Raise vehicle until wheel is free to rotate, then remove axle shaft.
2.
Disengage retainer tang and remove retainer from axle housing tube.
3.
Torque adjusting nut to 50 ft. lbs. while rotating hub assembly. Ensure bearing cones are seated and in contact with spindle shoulder.
4.
Back off adjusting nut until just loose.
5.
Insert key into adjusting nut slot, if equipped. Install snap ring to retain key in position.
6.
Lower vehicle, then install axle shaft.
GMC Single Speed Axle
REAR WHEEL BEARINGS ADJUSTMENT
1.
Raise and support rear axle.
2.
Remove axle shaft as outlined previously. Release brakes.
3.
Disengage retainer tang from locknut, then remove locknut and retainer from axle housing tube.
4.
Torque inner adjusting nut to 50 ft. lbs. while rotating wheel, then back off nut 1/8 of a turn.
5.
Install retainer so that short tang engages nearest slot on adjusting nut.
6.
Install outer locknut and torque to 250 ft. lbs., then bend long tang of retainer into slot of outer nut.
Timken (Rockwell) Axle
REAR WHEEL BEARINGS ADJUSTMENT
