Inspection; Reassembly - Chevrolet 1973 Overhaul Manual

Fig. 7D —Removing Preload Springs from Pack
6. roll out the differential pinions
For Truck Models
and thrust washers.
For Passenger models
by rotating them in one direction only. Using
Figure 8D as a reference, rotate differential case
clockwise to remove the first gear, then rotate case
counter-clockwise to remove the second gear. To
remove second gear, it may be necessary to assist
pinion gear upon its seat by prying on gear through
observation holes on case. Mark pinions and side
gears for reassembly in original position.
7. Remove side gear, clutch pack, shims and guides
from case. Tap the assembly from the case, using a
brass drift as shown in Figure 9D. Repeat removal
on opposite gear.
Fig. 8D —Removing D iffe re n tia l Pinion Gears
pinion gears can be removed
REAR AXLE DIFFER EN TIA L CARRIER
Fig. 9 D —Removing Side Gear
8. Separate clutch pack assembly from side gear.
Retain clutch pack assembly with original side gear.

Inspection

1. Check clutch plates and discs for excessive wear and
signs of overheating.
NOTE: Clutch plates and discs are not
serviced separately. If replacement is re­
quired, clutch pack must be replaced as an
assembly.
2. Inspect preload springs for distortion and other
defects.
3. Compress springs and determine if they are
capable of properly preloading the clutch pack,
replace springs that are weak or questionable.
4. Examine spring retainer for alignment between the
retainer halves and for excessive wear at spring
seats.

Reassembly

1. Lubricate clutch plates and discs with special
positraction lubricant.
2. Alternately position clutch plate and clutch disc on
side gear, beginning and ending with clutch plate,
until assembly of clutch pack is complete. See
Figure 10D.
3. Install clutch pack guides on the clutch plate lugs.
Make sure that the clutch disc lugs engage with side
gear teeth.
4. Select shims of equal thickness as those removed
from the case, or if old shims are suitable, reinstall
them over the side gear hub.
5. Lubricate and assemble opposite side gear as
above.
6. Install one side gear, clutch pack assembly and
shim(s) in the differential case.
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OVERHAUL MANUAL