Pinion Oil Seal/Pinion Flange Replacement - GMC G Service Manual

4B1-20 REAR AXLE
h H Install or Connect (Figure 24)
1. Key (57) into adjusting nut (58) slot.
• If slot is in alignment with keyway in axle spin­
dle, back nut off a slight amount, but not more
than one slot, to align key.
2. Snap ring (56) at spindle end. Be sure ring is seated.
3. Axle shaft (52). Refer to "Axle Shaft Replacement" in
this section.
REAR AXLES WITH DISC BRAKES
h"*| Remove or Disconnect (Figure 24)
Tool Required:
J 2222-C Wheel Bearing Nut Wrench
• Raise the vehicle until the wheel is free to spin.
1. Axle shaft. Refer to "Axle Shaft Replacement" in this
section.
2. Outer locknut (40).
• Disengage the lock washer (41) from the nut.
3. Lock washer (41).
4. Adjusting nut (42).
E & l Tighten
• Adjusting nut (42) to 68 N»m (50 ft. lbs.). Tighten
with J 2222-C while rotating the hub assembly,
making certain the bearing cones are seated
and in contact with the spindle shoulder.
P ^ | Adjust
• Back off the adjusting nut (42) and retighten to
41-54 N*m (30-40 ft. lbs.) while hub is rotated.
• Back off the adjusting nut (42), 135 to 150
degrees.
B Install or Connect
1. Lock washer (41).
• Bend one tang of lock washer over a flat of thb
adjusting nut (42), 30 degrees minimum.
2. Outer locknut (40).
IC fl Tighten
• Outer locknut (40) to 88 N*m (65 ft. lb.) minimum.
• Bend one tang of lock washer over a flat of the
outer nut (40), 60 degrees minimum.
3. Axle shaft. Refer to "Axle Shaft Replacement" in this
section.
PINION OIL SEAL/PINION FLANGE
REPLACEMENT
The pinion oil seal and the pinion flange may be
replaced with the carrier assembly installed in the vehicle.
M Remove or Disconnect (Figures 18, 19 and
Tools Required:
J 8614-01 Pinion Flange Holder and Remover
• Raise the vehicle.
1. Propeller shaft. Refer to PROPELLER SHAFT
(SEC. 4A).
I ? | Important
Scribe a line on the pinion stem, pinion nut and pinion
flange to be used as an installation guide (figure 18).
2. Nut using J 8614-01 (figure 19).
Figure 32 — Tightening the Adjusting Nut
3. Flange using J 8614-01 (figure 20).
• Use the special nut and forcing screw to remove
the flange.
4. Oil seal.
• Pry the oil seal from the bore. Do not damage
the machined surfaces.
• Thoroughly clean foreign material from the con­
tact area.
• Replace parts as necessary.
h H install or Connect (Figure 33)
Tools Required:
J 8614-01 Pinion Flange Holder and Remover
J 24384 Pinion Oil Seal Installer (Dana
10 1/2-inch ring gear axle).
1. Oil seal into the bore using J 24384 (figure 33).
• Lubricate the inside diameter of the new oil seal
with extreme pressure lubricant such as
9985038 or equivalent.
• Pack the cavity between the pinion stem, pinion
flange and pinion nut washer with a non-hard­
ening sealer such as PERMATEX TYPE A or
equivalent.