Chevrolet 10 series 1973, Overhaul Manual

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4 - 4 6 REAR AXLE D IFFERENTIA L CARRIER
2. Inspect clutch discs and plates for wear, cracked, or
distorted condition. Refer to "Specifications"
section.
3. Inspect side gear rings, side gears, and differential
cases for worn, cracked, or distorted condition that
would render these parts unfit for further services.
Assembly
During assembly operations, all parts should be kept
clean and free of dirt or other foreign material. As each
part is assembled in its proper position, it is necessary
that it be lightly coated with the correct lubricant.
1. Place tabbed Belleville friction plate (4) in flanged
differential case, being extremely careful that
convex (bulged) side is toward the side gear. See
Figure 17D.
2. Assemble remaining plates and discs to splines of
side gear ring, being sure they are assembled in the
same order of removal. The convex (bulged) side of
the Belleville friction disc (5) should be toward the
side gear and it should nest into the Belleville
friction plate (4).
3. Place assembled side gear ring with plates and discs
in flanged half of differential case.
4. Install side gear and cross shafts with pinions.
5. In the order listed install the following: (1) side
gear, (2) side gear ring, (3) flat plate with tabs, (4)
flat disc with teeth, (5) flat plate with tabs, (6)
Belleville disc with convex (bulged) side up, or
toward side gear, (7) Belleville plate, with convex
(bulged) side up, or side toward gear.
6. Position plain half of differential case over
previously assembled parts with scribe markings on
both halves of case in alignment.
7. Install differential case bolts, but do not tighten at
this time.
8. Before tightening bolts, use axle shafts and align
splines of the side gear and side gear ring, on each
side. Tighten bolts evenly and alternately. Remove
axle shafts.
9. Observe if Power-Lok components have been
assembled properly. Each pinion cross shaft can be
tight on its ramp or if there is clearance it should
be only a few thousandths, and it should be equal
at all four cross shaft ends.
Testing Procedure
The Power-Lok can be effectively tested for correct
operation by placing one rear wheel on good dry
pavement and the other on ice, snow, mud, gravel,
grease, etc.
It can easily be determined whether or not the non­
slipping wheel is providing pulling power. The procedure
should then be repeated with the opposite wheels on the
dry and slippery surfaces.
The above testing procedure is a rough test that can be
made by the owner of the vehicle. However, if it is
suspected that the unit is not operating properly, it can
be checked by the following procedure.
Be sure the transmission is in neutral. Raise one wheel
off the floor and place a block in the front and rear of
the opposite wheel. Remove the hub cap and install a
special tool across two wheel studs. Apply a torque
wrench to special tool. Disregard breakaway torque and
observe only the torque required to continously turn the
wheel smoothly.
If the torque reading is less than 40 foot-pounds or more
than 200 ft. lb., the unit should be disassembled and the
necessary repairs made.
OVERHAUL MANUAL