- Install the selective shim between the inner pinion bearing and the shoulder
of the pinion gear.
- Install the inner pinion bearing onto the
pinion gear using the J 33785
.
- Install the new collapsible spacer onto the pinion gear.
- Lubricate the inner and the outer pinion bearing with axle lubricant.
Use the proper fluid. Refer to
Fluid and Lubricant Recommendations
in Maintenance and Lubrication.
- Install the new deflector onto the pinion
yoke using a soft-faced hammer.
- Install the outer pinion bearing into the differential carrier assembly.
- Install the oil seal by doing the following:
| 7.1. | Install the differential carrier assembly into a vise. |
Place shop towels in the vise in order to protect the differential carrier
assembly.
| 7.2. | Position the oil seal in the bore. |
| 7.3. | Install the J 33782
over the oil seal. |
| 7.4. | Strike the J 33782
with a hammer until the seal flange seats on the axle housing surface. |
- Install the pinion gear, with the inner pinion bearing and the new collapsible
spacer, into the differential carrier case.
- Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent
to the splines of the pinion yoke.
- Install the pinion yoke.
Align the reference marks made during removal.
Notice: Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components
may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.
- Seat the pinion yoke onto the pinion shaft by tapping it with a
soft-faced hammer until a few pinion shaft threads show through the yoke.
- Install the washer and a new pinion nut.
If the new pinion nut cannot be installed, perform the following steps in order
to seat the pinion yoke onto the pinion so that the washer and new pinion nut can
be installed:
| 12.1. | Remove the pinion nut washer. |
| 12.2. | Install the old pinion nut. |
| 12.3. | Tighten the nut until a few of the shaft threads show through the nut
so that the washer and new pinion nut can be installed. |
| 12.4. | Remove the old pinon nut. |
| 12.5. | Install the pinion nut washer |
| 12.6. | Install the new pinion nut. |
- Install the J 8614-01
onto the pinion yoke as shown.
Notice: Refer to Fastener Notice in the Preface section.
Important: If the rotating torque is exceeded, the pinion will have to be removed and
a new collapsible spacer installed.
- Tighten the pinion nut while holding the J 8614-01
.
Tighten
Tighten the pinion nut until the pinion end play is just taken up. Rotate the
pinion while tightening the nut to seat the bearings.
- Measure the rotating torque of the pinion using an inch-pound torque
wrench.
Specification
The rotating torque of the pinion should be 1.0-2.8 N·m (10-25 lb in)
for used bearings or 1.7-3.4 N·m (15-30 lb in) for new
bearings .
- If the rotating torque measurement is below 1.0 N·m (10 lb in)
for used bearings or 1.7 N·m (15 lb in) for (new bearings,
continue to tighten the pinion nut.
Tighten
Tighten the pinion nut, in small increments, as needed, until the torque required
in order to rotate the pinion is 1.0-2.8 N·m (10-25 lb in)
for used bearings or 1.7-3.4 N·m (15-30 lb in) for new
bearings.
- Once the specified torque is obtained, rotate the pinion several times
to ensure the bearings have seated.
Recheck the rotating torque and adjust if necessary.
- Install the left side differential carrier bearing, print side out, to the
left side differential adjuster nut using the J 8092
(1) and the J 45232
(2).
- Install
the left side differential bearing adjuster into the left differential carrier case
half using the J 42213
.
- Install the left differential
case side bearing cup into the left differential carrier case half.
- Install the differential case assembly into
the left differential carrier case half.
- Using the J 42213
,
turn the differential adjuster nut sleeve in until there is a slight amount of backlash
felt between the ring gear and the pinion.
- Install the right side differential carrier bearing, print side out, to the
right side differential adjuster nut using the J 8092
(1) and the J 45233
(2).
- Install the right side differential bearing
adjuster into the right side differential carrier case half using the J 45224
.
- Install the right differential case side bearing cup into the right differential
carrier case half.
- Install the right differential carrier case half to the left differential
carrier case half.
Do not use sealer at this time.
If the carrier case halves do not make complete contact, back out the right
side differential adjuster.
- Install the differential carrier case bolts.
Tighten
Tighten the differential carrier case bolts to 48 N·m (35 lb ft).
- Adjust the backlash. Refer to
Backlash Inspection and Adjustment
.
