Adjusting Final Drive Gear; Fitting Bearing Adjuster Stop Plate; Drive Pinion Ball Bearing - Fiat 850 Sedan 1968 Shop Manual

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TRANSMISSION· DIFFERENTIAL
115
Fig. 190 • Fitting bearing adjuster stop plate.
1. Lug. ·2. Bearing adjuster. - 3. Roller bearing.
Fit the adjuster stop plates and gaskets (fig. 190)1
using care to insert the plate lug in a tooth space
of adjuster.
On axle shafts, slide: oil boots with bushings
(fig. 191), boot covers, caps, sleeves and slip
joints; secure sleeves with snap rings.
Install the transmission and differential assembly
as directed in covering paragraph; tighten mount-
ing screws and nuts to torques tabulated on page 191.
Insert axle shafts in differential case.
Install the slip sleeve and clutch throwout yoke
lever and hook up yoke lever end under the sleeve
spring.
Fig. 192 - Drive pinion ball bearing.
1. Bearing. - 2. Bl'!aring lock plate. - 3. Lock plate screw.
Drive pinion thrust washers for service come in
the following range of thicknesses:
.0295" •.0315" - .0335" - .0354" - .0374"
.0394" - .0413" - .0433" - .0453" - .0472"
(0.75.0.80 - 0.85 - 0.90·0.95 -1 - 1.05·1.10 -1.15 -1.20 mm).
Some tools have been designed to help the
operator determine the thickness of pinion washer
(fig. 194).
Also, the following formula should be used:
Proceed as outlined hereafter:
where:
S
thickness of the washer (fig. 195);
b
dial indicator reading (fig. 194);
a = figure stamped in production on pinion stem.
How to figure
«
b».
Fit the drive pinion rear ball bearing into its
bore and place the retainer plates; tighten retainer
plate nuts with 14.5 to 18.1 fUbs (2 to 2.5 kgm) of
torque (fig. 192).
Insert tool A. 70101 (dummy pinion) (I, fig. 194)
and rotate the new bearing some turns.
Draw up nut with 12.3 ft.lbs (10 kgm) of torque.
Affix fixture A. 95690 (fig. 194) with dial indicator,
the scales of which have been set at zero
i
make
sure that the indicator plunger touches the differen-
tial cage bearing seat.
b - a
b
+
a
(+
a)
(- a)
S
b
or
S = b
For correct meshing of the drive pinion with the
ring gear
I
a shim of proper thickness should be
placed between the pinion and the rear ball bear-
ing (fig. 195).
Adjusting Final Drive Gear.
Fig. 191 • FiUing differential cage oil boot bushing.
1. Boot bushing. - 2. Tool A. 70103.

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This manual is also suitable for:

850 coupe 1968850 roadster 1968

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