Cleaning; Inspectio N; Axle Housing; Differential - GMC T Series 1994 Repair Manual

Figure 2— Pinion Shaft Lock Bolt
Figure 3— Prying the Differential Case
J 8107-4
Figure 4— Removing Differential Side Bearing
C. Drive the pinion out of the housing with a ham­
mer and a soft drift (figure 8).
19. Collapsible spacer (4) from the pinion.
20. Outer pinion seal (38) and bearing (39).
21. Inner bearing (5) and shim (6) from the pinion.
A. Press the bearing off the pinion using J 8612-B
(figure 9).
B. Remove the shim.
22. Bearing cups (5 and 39) from the axle housing
using a hammer and punch.
• Work the cups out of the housing evenly, mov­
ing the punch back and forth between one side
of the cup and the other. Use the slots provided
for this purpose.

CLEANING

Do not steam clean drive parts having ground and
polished surfaces such as gears, bearings, and shafts.
All parts should be disassembled before cleaning.
These parts should be cleaned in a suitable solvent.
Parts should be thoroughly dried immediately after
cleaning. Use soft, clean, lintless rags. Parts may be
dried with compressed air. Do not allow the bearings to
spin while drying them with compressed air.

INSPECTIO N

It is critical to carefully and thoroughly inspect all
drive unit parts before reassembly.
Thorough inspection of the drive parts for wear or
stress and subsequent replacement of worn parts will
eliminate costly drive component repair after reassem­
bly.

AXLE HOUSING

Inspect
1?
• The carrier bore for nicks or burrs that would pre­
vent the outer diameter of the pinion seal from
sealing. Remove any burrs that are found.
• The bearing cup bores for nicks or burrs. Remove
any burrs that are found.
• The housing for cracks. Replace the housing if any
cracks are found.
• The housing for foreign material such as metal
chips, dirt, or rust. Refer to " Cleaning."

DIFFERENTIAL

Inspect
• Pinion gear shaft for unusual wear.
• Pinion gear and side gear teeth for wear, cracks,
scoring, and spalling.