Cadillac 60 Series 1963 Shop Manual page 79

5-20
POWER STEERING
Torque Wrench
J-7754
Should Read 1 to 4
Inch Lbs.
%" 12 Pt.
Socket
Fig. 5-33 Checking Worm and Rack-Piston Ball PreLoad
NOTE: If no number is found on the rack-
piston, the original ball size was #7.
A change of one ball size (higher size code) will
increase preload approximately 1 inch-pound.
Final preload on replacement balls should be 2
to 3 inch-pounds.
9. Remove valve assembly from worm.
10. Remove rack-piston from vise.
11. Insert Worm Gear Ball Arbor, J-7539, into
worm and turn rack-piston onto arbor. Do not
allow arbor to separate from worm until rack-
piston is fully on arbor.
13. Steering Gear, Installation
of Major Components
1. Position gear housing in vise, with adjuster
plug end facing up.
2. Lubricate worm shaft, lower thrust bearing,
and races with power steering fluid, then position
thrust bearing and races on worm.
3. Align valve body drive pin on worm with
narrow pin slot on valve body. Be sure O-ring
seal between valve body and worm head is
installed.
Fig. 5-34 Installing Adjuster Plug Assembly
4. Position valve assembly and worm shaft in
housing as an integral unit.
CAUTION: Do not push against stub shaft,
as this might cause stub shaft and cap to pull
out of valve body, allowing spool seal to slip
into valve body oil grooves. Valve assembly
can be installed by pushing on the outer
diameter of the valve body housing with the
fingers of both hands. Make certain that Teflon
rings are not binding on inside of housing. Valve
assembly is properly seated when oil return
hole in gear housing is fully visible.
5. Place Adjuster Plug Protector, J-6222, over
end of stub shaft.
6. Lubricate new adjuster plug O-ring seal
with power steering fluid and install in groove on
adjuster plug.
7. Install adjuster plug assembly over end of
stub shaft, Fig. 5-34, and tighten just enough to
make certain that all parts are properly seated
in gear housing. Remove Seal Protector, J-6222.
NOTE: If Seal Protector J-6222 is removed
too soon, stub shaft seal will be damaged by the
shaft splines.
8. Install adjuster plug lock nut loosely on ad-
juster plug.
NOTE: Do not adjust thrust bearing preload
at this time.
9. Install R a c k - P i s t o n Seal Compressor,
J-7576, in gear housing, Fig. 5-35, holding it
tightly against shoulder in housing.
10. Insert rack-piston into housing until arbor
engages worm. Turn stub shaft clockwise, using
a 3/4 inch twelve-point socket or box end wrench,