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

15. Ring gear from the differential.
• Drive the ring gear off with a brass drift if nec­
essary.
Inspect
• Drive pinion bearing preload and record for use
when reassembling the pinion (figure 9).
• The pinion assembly for looseness by moving it
back and forth. Looseness indicates excessive
bearing wear.
16. Pinion flange nut and washer using J 8614-01 to
hold the pinion flange (figure 7).
17. Pinion flange using J 8614-02 (figure 8).
18. Pinion from the axle housing.
A. Thread the pinion nut halfway onto the pinion.
B. Install the differential cover with two bolts to
keep the pinion from falling.
C. Drive the pinion out of the housing with a ham­
mer and drift.
D. Remove the cover and pinion.
19. Collapsible spacer from the pinion (figure 10).
20. Outer seal and outer pinion bearing.
21. Inner bearing and shim from the pinion.
A. Press the bearing off the pinion using J 25320
(figure 11).
B. Remove the shim.
22. Bearing cups from the axle housing using a ham­
mer and punch in the slots provided for this pur­
pose.
• Work the cups out of the housing evenly, mov­
ing the punch back and forth between one side
of the cup and the other.
Figure 10— Pinion Collapsible Spacer

CLEANING

Do not steam-clean drive parts that have 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, lint free 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
• The axle housing bore for nicks or burrs that could
prevent 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.