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POWER STEERING GEAR AND P U M P
3B3-11
2. Inspect the worm and rack-piston grooves and all the
balls for scoring. If either the worm or rack-piston needs
replacing, both must be replaced as a matched assembly.
3. Inspect ball return guide halves, making sure that the
ends where the balls enter and leave the guides are not
damaged.
4. Inspect lower thrust bearing and washers for scoring
or excessive wear. If any of these conditions are found, replace
the thrust bearing and washers.
5. Inspect rack-piston teeth for scoring or excessive wear.
Inspect the external ground surfaces for wear, scoring or
burrs. If any of these conditions exist and are excessive, both
the rack piston and worm must be replaced.
Assembly
1. If the teflon oil seal and "0" ring were removed,
lubricate a new "0" ring and seal with Power Steering Fluid
No. 1050017 or equivalent and install in groove on rack-
piston. The teflon ring may be slightly loose after assembly,
but will tighten up when subjected to the hot oil in the system
(Fig. 3B3-26).
BE INSTALLED
RACK-PISTON
383-26 Installing Ring on Rack Piston
2. Slide the worm all the way into the rack-piston. It is
not necessary to have the thrust bearing assembly on the
worm at this time.
3. Turn the worm until the worm groove is aligned with
the lower ball return guide hole (Fig. 3B3-27).
4. Lubricate the balls with Power Steering Fluid, No.
1050017 or equivalent, then feed 17 balls into the rack-piston,
while slowly rotating the worm counter-clockwise.
NOTE: The black balls are .0005" smaller than the silver
balls. The black and silver balls must be installed
alternately into the rack-piston and return guide.
5. Alternaltely install 7 balls into the return guide and
retain with grease at each end of guide (5 balls on constant
ratio gear). Install the return guide clamp and tighten the 2
clamp screws to 6 ft. lbs.
I
WORM
INSTALL BALLS
WHILE ROTATING WORtv
COUNTER CLOCKWISE
e
GUIDE
HALVES
2029
Fig. 363-27 Installing Balls in Rack Piston
STEERING GEAR HOSE CONNECTOR
AND POPPET CHECK VALVE
Replacement
The following procedure is recommended for bench
repairs only.
NOTE: When on car replacement is necessary, use a No.
4 easv-out or similar extractor with 1/4" around off end
to prkvent bottoming (Fig. 383-28).
w
Fig. 383-28 Removing Connector Seat
1. Disconnect pressure and return line hoses at steering
gear and secure hose ends in a raised position to prevent loss
of fluid.
2. To prevent metal chips from becoming lodged in valve
assembly, pack inside of connector seats of pressure and
return ports with petrolatum.
3. Tap threads in connector seats, using a 5/16"-18 tap.
CAUTION: Do not tap threads too deep in
pressure hose connector seat as tap will bottom
poppet valve against housing and damage it. It is
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