GMC T Series 1994 Repair Manual page 263

Figure 5— Separating the Carrier Case Halves
29. Carrier Case
18. Bolt
19. Lock Tab 32. Sleeve
Figure 6— Removing the Lock Tabs
• Housing for cracks. Replace the housing if any
cracks are found.
• Housing for foreign material such as metal chips,
dirt, or rust. Refer to " Cleaning."
DIFFERENTIAL
L *
Inspect
• Pinion gear shaft for unusual wear.
• Pinion gear and side gear teeth for wear, cracks,
scoring, or spalling.
• Thrust washers for wear.
• The fit of the side gears in the differential case.
• The fit of the side gear on the axle shafts.
• Differential case for cracks and scoring.
• All parts for wear and replace if necessary.
RING AND PINION GEARS
• Ring and pinion gears are matched sets and both
are replaced any time a replacement of either is
necessary.
F1780
Figure 8— Removing the Sleeve Bearing
Inspect
L*
• Ring and pinion gear teeth for cracking, chipping,
scoring, or excessive wear.
• Pinion gear splines for wear.
• Pinion flange splines for wear.
• The fit of the pinion flange on the pinion gear.
• Sealing surface of the pinion flange for nicks, burrs,
or rough tool marks that could cause damage to
the seal's inside diameter and result in an oil leak.
• All parts for wear and replace if necessary.
BEARINGS
L *
Inspect
• Bearings for smooth rotation after oiling them.
• Bearing rollers for wear.
• Bearing cups for wear, cracks, brinelling, and scor­
ing.
9
Important
When replacing worn or cracked bearings and
cups, make sure to replace bearings in sets.
30. Bearing
32. Sleeve
F1782