Pinion Flange, Dust Deflector/O Il Seal Replacement - GMC 1986 P-Truck Service Manual

4B-14 REAR AXLE
• Brake components from the backing plate.
Refer to BRAKES (SEC. 5).
4. Bolts and washers from the axle.
5. Backing plate.
Install or Connect
1. Backing plate to the axle.
. Bolts and washers to the plate.
2
• Attach components to the backing plate.
Refer to BRAKES (SEC. 5).
3. Brake line to the cylinder inlet.
• Refer to BRAKES (SEC. 5) for bleeding and
adjustment procedure.
4. Axle shaft. Refer to " Axle Shaft Replacement"
earlier in this section.
5. Wheel, tire and brake drum.
W HEEL STUD REPLACEMENT
(8 1/2 -9 1/2-INCH RING
GEAR—SEMI-FLOATING AXLES)
• Raise the vehicle on a hoist and allow the axle to
hang free.
Remove or Disconnect
Tool Required:
J-6627-A Wheel Stud Remover
1. Wheel, tire and brake drum.
2. Stud from the axle flange using J-6627-A (figure
15).
Install or Connect
1. Stud in the axle flange hole. Refer to figure 15.
• Start the new stud into the axle flange hole
by pressing firmly with your hand.
• Thread on a lug nut with the flat side to the
vehicle.
• Tighten the lug nut and draw the stud head
into the rear of the flange.
• Thread the lug nut off.
2. Wheel, tire and brake drum.
• Lower the vehicle.
PINION FLANGE, DUST
DEFLECTOR/OIL SEAL
REPLACEMENT (8 1 / 2 - 9 1/2-INCH
RING GEAR SEMI-FLOATING
AXLES)
• Raise the vehicle on a hoist.
Remove or Disconnect
Tool Required:
J-8614-01 Companion Flange Holder and
Remover
1. P ro p e lle r s h a ft from the a xle . R efer to
PROPELLER SHAFT (SEC. 4A).
• Tie the propeller shaft to a frame rail or
crossmember.
Measure
The torque required to rotate the pinion (figure
16). Record the torque value for later reference.