Cadillac 60 Series 1963 Shop Manual page 80

POWER STEERING
5-21
Seal Compressor
J-7576
Rack Piston Arbor
J-7539
Fig. 5-35 Installing Rack-Piston Seal Compressor
to draw rack-piston into housing. When piston ring
is in housing piston bore, Arbor, J-7539, and Seal
Compressor, J-7576, can be removed.
11. Turn stub shaft as necessary until middle
rack groove in rack-piston is aligned with center
of pitman shaft needle bearing.
12. Lubricate new side cover O-ring seal and
install in groove in face of side cover.
13. Assemble side cover on pitman shaft by
screwing cover on to pitman shaft adjuster screw
until side cover bottoms on pitman shaft.
14. Install pitman shaft so that center tooth
in sector meshes with center groove of rack-
piston. Make sure side cover O-ring is in place
before pushing side cover down on gear housing.
15. Install side cover screws and lock washers
and tighten to 30 foot-pounds.
16. Hold adjuster screw with Allen wrench and
install new adjuster lock nut half way on adjuster
screw.
17. Install rack-piston end plug in rack-piston.
Tighten end plug to 50 foot-pounds.
18. Lubricate new housing end plug O-ring seal
with power steering fluid and install in gear
housing.
19. Insert end plug into gear housing and seat
against O-ring seal. Slight tapping with a mallet
may be necessary to seat end plug properly.
20. Snap end plug retainer ring into place with
fingers. Slight tapping may be required to bottom
retainer ring in the gear housing securely.
21. Position gear assembly with stub shaft end
up and adjust thrust bearing preload as follows:
^ Torque Wrench J-7754
flf /
" . . Spanner Wrench J-7624
Fig. 5-36 Adjusting Thrust Bearing PreLoad
a. Using Spanner Wrench, J-7624, lightly
tighten adjuster plug and then back off 1/8 turn.
b. Install 0-25 inch-pound Torque Wrench,
J-7754, with a 3/4 inch 12-point socket on stub
shaft splines, Fig. 5-36.
c. Rotate stub shaft to either the left or right
turn stop and then back off from stop 1/2 turn.
d. Rotate torque wrench in a 45° arc and note
highest reading.
e. Tighten adjuster plug with Spanner Wrench,
J-7624, until there is a preload of 1-3 inch-pounds
higher than initial load reading just measured.
f. Tighten adjuster plug lock nut securely with
punch and hammer.
g. Recheck preload to be sure it still reads
1-3 inch-pounds higher than initial load. If ad-
justment has changed, readjust.
22. Adjust pitman shaft end play as follows:
a. Rotate stub shaft from one stop to the other
and locate center of travel.
b. With gear on center, check combined ball
and thrust bearing preload using Torque Wrench,
J-7754, with a 3/4 inch 12-point socket, and note
highest reading, Fig. 5-37.
c. With pitman gear on center and adjuster
screw lock nut backed off, adjust pitman shaft so
that preload is 8-10 inch-pounds in excess of total
preload and drag.
NOTE: These readings should be made by
rotating Torque Wrench in a 20° arc. Total