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TRANSMISSION - DIFFERENTIAL
117
Side gear thrust washers for service come in
the following thickness range:
.0275" - .0315" - .0354" - .0394"
.0433" •.0472" •.0512" •.0551"
(0.7 - 0.8 - 0.9 - 1 -1.1 - 1.2 - 1.3 - 1.4 mm).
Adjusting Ring Gear-to-Pinion Back-
lash and Preloading Differential Bear-
ings.
These operations should be carried out simulta-
neously.
Working on adjusters temporarily set final drive
gear backlash at .004" to .006" (0.10 to 0.16 mm);
adjusters should merely touch bearings, so not to
strain them with any preload.
Tighten adjusters of the same amount in alternate
fashion; differential carrier caps are thus caused to
diverge slightly, increasing the distance which
separates them (0, fig. 198) (axial preload of
bearings).
Distance • D. between carrier caps should in-
crease by .008" to .010" (0.20 to 0.25 rom).
If
fixture A. 95688 is used to check divergence,
the reading of the dial indicator (I, fig. 197) shall
be .006" to .008" (0.15 to 0.20 rom), in view of the
fact that the fixture is attached to the transmission-
differential case.
NOTE· Prior to preloading differential bearings,
use care to rotate the ring gear through such a
nwnber of turns
as
bearings are permitted to take
a snug seat.
With the ring gear bearings under the correct
preload, check the ring gear·to-pinion backlash,
which should range between .004" (0.10 mm) and
.006" (0.15 mm).
Hold the drive pinion and manually move the
ring gear, tripping it as much as the gear backlash
Fig. 197 - Setting differential cage bearing preload by means
of fixture
A. 95688.
1. Dial indicator for preload check. - 2. Dial indicator for gear
backlash check.• 3. Fixture holder. - 4. Relay lever. - 5. Fixture
positioning knob. - 6. Clutch shaft. - 7. Adjuster wrench A. 55053.
may allow.
Use a
dial
indicator (2, fig. 199) and
read the amount of backlash shown.
Should gear backlash be in excess or in defect
of limits specified above, move
the
ring gear
respectively toward or away from pinion, screwing
out one bearing adjuster and in the other the same
number of turns.
It is mandatory that the rotation of one bearing
adjuster is balanced by an even rotation of the
other adjuster in the opposite direction, to avoid
upsetting the preload.
Fig. 198.
Diagram for checking differen-
tial cage roller bearing preload.
1. Bearing adjuster. - 2. Roller
bearings. - 3. Differential cage. -
4. Ring gear. - 5. Drive pinion .•
6. Drive pinion nut.
o -
Distance between differential
carrier caps: tighten bellring ad-
Justers until
II
D
JJ
Increases by
.008" to .010" (0.20 to 0.25 mm).
D
6
5
3
1
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