C Tahoe 2WD V8-5.7L VIN R (1996)
Fig. 11 Pinion Depth shim Selection Chart
Fig. 12 Side Bearing Preload Adjustment
1.
Inspect head of drive pinion for pinion depth code number.
Pinion may be stamped with either plus (+) or minus (-) number, indicating
necessary modification of shim thickness to ensure proper engagement.
2.
Compare depth code number with number on original pinion and use chart,
Fig. 11, to select proper shim thickness for preliminary pinion depth
adjustment as follows:
a.
Refer to thickness of shims removed during disassembly and add or subtract the value shown in chart.
b.
If original pinion, housing and rear bearing is to be reused, install shims of original thickness.
3.
Position selected shim on axle housing, ensure that bolt holes are aligned, then install pinion assembly and
torque retaining bolts to 65 ft. lbs. in
crossing pattern.
4.
Place outer races over differential case bearings, mount differential assembly in housing and install bearing caps, and tighten cap bolts snug.
5.
Loosen right bearing adjusting nut and tighten left nut using suitable tool,
Fig. 12, until ring gear contacts pinion. Do not force gears into
contact. Tighten left nut just enough to obtain zero backlash without binding gears.
6.
Loosen left adjusting nut approximately two notches, then install adjusting nut lock.
7.
Firmly tighten right adjusting nut to force case against left nut, then loosen nut until clearance exists between right nut and bearing race.
8.
Tighten right adjusting nut until it just contacts bearing race (zero preload), then tighten nut an additional two slots for used bearings or three slots
for new bearings and secure position with locking retainer.
At this point differential bearing preload is properly set. If any additional
adjustments are required, ensure that preload remains as established. If one adjusting nut is loosened, the other nut must be tightened an
equal amount in order to maintain preload.
