And 7 5 /S-Inch Ring Gear Axles; Inspection - GMC 1989 Light Duty Truck Repair Manual

4B1-4 71 fe AND 7

INSPECTION

It is very important 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 reassembly.
5
/s-INCH RING GEAR AXLES
F igure 5— P inion C ollapsable Spacer
AXLE HOUSING
In s p e c t
U
• The carrier bore for nicks or burrs that would
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.
• 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 " C leaning" in this
section.
DIFFERENTIAL
L 1
In s p e c t
Pinion gear shaft for unusual wear.
Pinion gear and side gear teeth for wear, cracks,
scoring, and spalling.
Thrust washers for wear.
T h e fit of the differential side g ears in the differential
case.
The fit of the side gears on the axle shafts.
Differential case for cracks and scoring.
Replace all worn parts.
Figure 6 — R em oving the Pinion R ear B earing