Buick LeSabre 1965 Service Manual page 398

6-32
REAR AXLE, 46, 48, 49000 SERIES
STUD
J-8619-13
PILOT
J-5647-37
FRONT PINION
BEARING
z>
GAUGE PLATE
J-5647-36
REAR PINION
BEARING
.050" SHIM
v////////
J-5647-36 during gauging opera-
tion in order to compensate for
variations in different carrier as-
semblies. By using fifty thou-
sandths shim, the dial indicator
will contact Gauge Plate J-5647-
36 in any carrier assembly during
gauging operation.
7. Install nut on Stud J-8619-13.
Hold stud stationary with wrench
positioned on flats on end of stud;
tighten nut until a reading of 20
inch pounds is obtained when ro-
tating the gauge plate assembly
with an inch pound torque wrench.
8. Be certain that differential
support bores are free of burrs.
Drive a wedge into each pedestal
split and spread them just enough
so that Adapters J- 5647- 35 and 34
can be inserted. Then place in-
dicator gauge in carrier as fol-
lows: (See Figure 6-67.)
a. Remove disks from indicator
gauge and hold it in position in
the carrier with pins centered in
the pedestal bores.
Fig. 6-66—Installing Gauge Plate in Carrier
b. Slide long adapter through ped-
estal bore farthest from pinion
and over gauge pin. Then slide
short adapter in place on other
side.
c. Position the spring-loaded pin
of the indicator gauge in the cen-
tering hole of Gauge Plate J-5647-
36, and position the contact button
of dial indicator to bear against,
machined surface of Gauge Plate.
See Figure 6-67.
9. Press gauge yoke down firmly.
Record number of thousandths
dial indicator moves in a "+"
(plus) or "-" (minus) direction
from zero. (Reading will usually
be
(plus). Remove dial indi-
ADAPTER
J-5647-34'
GAUGE PLATE
J-5647-36
ADAPTER
J-5647-35
Fig. 6-67—Checking Pinion Setting
cator from carrier and check zero
setting on master gauge to make
certain this setting was not dis-
turbed by handling. If zero setting
is still correct, remove gauging
set-up (including 50 thousandths
shim), then add a plus reading or
subtract a minus reading from 50
thousandths. This answer indi-
cates the thickness of the shims
to be selected as further qualified
in Step 11.
NOTE: The usual dial indicator
reading will average from 1 to 10
thousandths in a plus direction
with a corresponding shim thick-
ness after computation of between
51 and 60 thousandths.
10. Examine ring gear and pinion
for nicks, burrs, or scoring. Any
of these conditions will require
replacement of the set.