Differential Assembly Installation; Adjusting Backlash - GMC T Series 1994 Repair Manual

DIFFERENTIAL ASSEMBLY
INSTALLATION
Install or Connect (Figures 1, 2, 23, 24 and 25)
Tools Required:
J 33788 Bearing Installer
J 23423-A Bearing Cup Installer
J 33792 Side Bearing Adjuster Wrench
1. Bearings (30) into the sleeves (32) using J 33788
(figure 23).
2. Sleeves (32) into the carrier case (29). Thread in
all the way.
3. Side bearing cups (33) into the carrier case (29)
using J 23423-A.
4. Differential assembly to the carrier case.
A. Place the differential case assembly (35) into
the carrier case half which contains the pinion
gear.
B. Turn the left sleeve (32) in toward the differen­
tial case using J 33792 until backlash is felt
between the ring and pinion gear.
5. Carrier case halves (29). Do not use any sealer at
this time.
• If the carrier halves do not make complete con­
tact, back out the right hand adjusting sleeve
(32). Use J 33792 (figure 24).
NOTICE: Refer to "Notice" on page 4C1-1.
6. Four bolts (28).
Tighten
• Bolts (28) to 50 N-m (37 lbs. ft.).

ADJUSTING BACKLASH

Tools Required: (Figures 1 and 2)
J 33792 Side Bearing Adjuster Wrench
J 8001-1 Dial Indicator Clamp
1. Tighten the right sleeve (32) to 140 N-m
(100 lbs. ft.) using J 33792 (figure 24).
2. Tighten the left sleeve (32) to 140 N-m (100 lbs. ft.)
using J 33792 (figure 24).
3. Mark the location of the adjusting sleeves in rela­
tion to the carrier halves (figure 25), so the notches
in the adjusting sleeves can be counted when
turned.
4. Turn the right adjusting sleeve OUT two notches
using J 33792.
5. Turn the left adjusting sleeve IN one notch using
J 33792.
6. Rotate the pinion several times to seat the bear­
ings.
7. Install a dial indicator so the button contacts the
outer edge of the pinion flange. The plunger must
be at a right angle to the pinion flange (figure 26).
8. Move the pinion flange through its free play while
holding the differential carrier. Record the dial indi­
cator reading.
9. Divide the dial indicator reading by 2 to obtain the
actual backlash.
EXAMPLE: A dial indicator reading of 0.16 mm
(0.006 inch) means that there is actually 0.08-mm
(0.003-inch) backlash.