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19-20
STEERING
Fig.
1
&?-Aligning the Center Bearing Spacer
with the Steering Valve
(52) With the steering gear housing in
the
holding
fixture lubricate the bore of the housing with power
steering fluid, Part No. 2084329 and carefully install
the power train assembly, while keeping the worm
turned fully counterclockwise to keep the reaction
rings from coming out of the grooves, with the center
bearing spacer valve lever hole in the "UP" position
to line up with the control valve lever clearance hole
in the steering gear housing.
CAUTION:
Make sure the cylinder head is bottomed
on the housing shou'lder (Figs.
1 and 2).
(53)
Align
the valve lever hole in the center bear-
ing spacer exactly with the steering valve hole in the
gear housing, using Tool (2-3649 (Fig. 18).
NOTE:
The aligning tool should not
be
removed un-
til the spanner nut is securely tightened.
(54) Install the housing head tang washer to in-
dex with the groove in the housing. Install spanner
nut and tighten to 110 to 200 foot-pounds with Tool
(2-3634.
Fig. 19--lnttalling
the Valve Pivot Lever
(55) Set the power piston at the center of travel and
install the gear shaft and cover assembly so that
the sector teeth index with the piston rack teeth. Make
sure the
"0"
ring is positioned in the face of the cov-
er.
(56) Install the cover spanner nut and tighten 110
to 200 foot-pounds with Tool C-3633.
(57) Install the valve pivot lever (double bearing
end first) (Fig. 19) into the center bearing spacer
through the hole in the steering housing
so
that the
slots in the valve lever are parallel
to
the wormshaft
in order to engage the anti-rotation pin in the center
race. Install the valve pivot lever spring small end
first.
NOTE:
Turn the worm until the piston bottoms in
both directions and observe the action
of
the Ievor.
It must
be
in the center of the hole and return
snappily to its center position when the worm
torque is relieved.
(58) Install the valve body on the housing making
sure the valve pivot lever enters the hole in the
valve spool (Fig. 1). Be sure the
"0"
ring seals are in
place. Tighten the valve mounting screws to
7
foot-
pounds.
(59) Install the new gear shaft seal followed by the
seal back-up washer and snap ring and a new grease
retainer as outlined under "Gear Shaft Oil Seal
Re-
placement."
FINAL TESTS AND ADJUSTMENTS
(1) Remove the oil reservoir cover and
fill
the
res-
ervoir with Power Steering Fluid, Part No. 2084329
to the level mark.
(2) Connect the
test
hoses C-3211 and C-3318 with
proper adaptors to the hydraulic pump on the vehicle
with the pressure gauge C-3309B installed between the
pump and the steering gear to register pressures.
(3) Start the engine and operate at idle to bring
the steering gear to normal operating temperature.
(4)
Roughly center the valve until the unit is not
self-steering, then expel all air from the unit by turn-
ing the wormshaft several times to the right and then
to the left. Tap on the back pressure valve body at-
taching screws to move the valve body up on the
steering housing, and tap
on
the end plug to move
the valve body down on the housing.
(5) Refill the reservoir before proceeding with the
following tests and adjustments on the bench.
(a) With the steering gear on center, tighten the
gear shaft adjusting screw until backlash in the
steer-
ing gear arm just disappears. Refer to Gear Shaft Ad-
justment-Item
(4).
If the power train has been removed, tighten
1%
turns from this position and while holding the ad-
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