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166
FIAT· 850 PASSENGER CARS
Assembly and installation.
The above outlined procedures should correct
any play and lash in the steering gear without
causing undue stiffness on turn.
Replace any seal which turns out to be damaged.
Inspect roller bearings: roller, cages and cups
should show no indication of damage or remarkable
wear.
The steering gear is assembled
by
reversing
the disassembly procedure.
Recall the following
points:
- if
the eccentric bushing has been removed
and discarded, install the new one using driver
A. 74043;
- after installation, reface the bushing with
reamer A. 90360/20 (fig. 281) to obtain specified
clearance between bushing and sector shaft;
- roller bearing cones and cups are fitted by
means of driver A. 74046;
- the installation and setting of bearing adjuster
nut are made using wrench A. 57003 (fig. 277).
It
is essential that before re-assembly and adjust-
ment all components are thorougWy washed and
lubricated.
For correct position of pitman arm on assembly
a tooth is omitted in the sector toothing while the
pitman arm shows a double tooth, which prevents
erroneous mating of parts.
The pitman arm mounting nut should be drawn
up with 72.3 fUbs (10 kgm) of torque (fig. 283).
To install the steering gear just reverse the
removal procedure.
Steering gear mounting nuts should be drawn up
with
14.5 ft.lbs (2 kgm) of torque.
J
Fig. 280.
Sectional view of the steering gear across
the worm.
1. Worm. - 2. Seat. • 3. Roller bearings. -
4. Cotter pin. - 5. Bearing lock and adjust-
ing nut. - 6. Pitman arm. _ 7. Sector. _
8. Steering housing.
Angoli riferiti allo sterzo montato
=
Angles
apply to an Installed steering.
I
,
"
'---------''!-cCAII G 01I RIFE III I I
-
AllO SJERlO MOlliATO
Fig. 279 - Adjusting lash between worm and sector.
1. Oil filler plug. - 2. Sector adjusting
SCfi'!W.
Next adjust the tooth lash through the adjusting
screw
(1, fig. 278)
on cover; lock this screw with
the nut (2).
Tooth lash adjustment can be also performed on
car, as shown in
fig.
279.
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