Pinion Depth Adjustment - GMC chervolet camaro 1999 Service Manual

Driveline/Axle
Pinion Depth Adjustment
Tools Required
• J 8001 Dial Indicator Set
• J 23597 - 1
Arbor
• J 23597 - 11
Gauge Plate
• J 21777 - 40 Rear Pilot Washer
• J 21777 - 42 Front Pilot Washer
• J 21777 - 43
Stud Assembly-Bolt
• J 21777 - 45 Side Bearing Discs
Use a pinion setting gauge in order to measure
differential drive pinion gear depth. The gauge provides
a normal or zero pinion as a gauging reference.
1. Install
J 21777 - 40, J 21777 - 42, J 21777- 43,
and
J 21777- 45.
2. Install J 23597- 11.
3.
Install J 21777 - 42 into the rear axle housing.
Notice: Refer to Fastener Notice in Cautions
and Notices.
4.
Install the drive pinion gear setting gauge nut into
the rear axle housing.
Tighten
Tighten the differential drive pinion gear setting
gauge nut to 2.3 N-m (20 lb in).
5.
Rotate J 23597 - 11 in order to seat the following
components:
• The differential drive pinion gear outer
bearing (2)
• The differential drive pinion gear inner
bearing
(1)
6.
Mount
J 8001
onto
J 23597- 1.
7.
Preload the dial indicator against the plunger
about 1.27 mm (0.050 in).
8. Install J 21777 - 45 onto J 23597 - 11.
Position this unit into the rear axle housing.
9.
Install the following components:
• The carrier bearing caps (3)
• The bearing cap bolts/screws (2)
Tighten
Tighten the differential carrier bearing cap
bolVscrews (2) to 75 N-m (55 lb ft).
10. Use the following steps in order to measure the
differential drive pinion gear depth:
'10.1.
Rotate
J
23597 - 1 slowly back and forth
until
J 8001
reads the greatest deflection.
The deflection is the point where the needle
changes direction.
10.2. At the point of deflection, set
J 8001
to zero.
10.3. Rpeat the rocking action in order to verify
the zero setting.
10.4. After obtaining the zero setting, rotate
J 23597 - 1 until the plunger no longer
touches
J
23597 - 11.
This action provides the gauge reference of
a zero or nominal drive pinion gear.
Rear Drive Axle 4-29
J
211n-43
164276
J
21777-45
2
164343