Chevrolet 1977 10 Series, Repair Manual, Page: 55 / 468

STEERING 3B-13
2. Turn the stub shaft counter-clockwise until the rack-
piston just forces end cover out of housing. Remove cover
and discard "O" ring.
CAUTION: DO N O T turn the stub shaft any
further than absolutely necessary to remove the end
plug, or balls from rack-piston and worm circuit
may escape and lay loose inside the rack-piston
chamber.
3. Remove the rack-piston end plug as shown in Figure
3B-35.
NOTE:
To aid in loosening end plug, strike end plug
with a brass drift.
4. Remove the pitm an shaft and side cover as follows:
a. Loosen the over-center adjusting screw locknut and
remove the 4 side cover attaching bolts and lock washers.
b. R otate the side cover until the rack-piston and pitman
shaft teeth are visible, then turn the stub shaft until the
pitm an shaft teeth are centered in the housing opening. Tap
the pitm an shaft with a soft ham m er and remove the pitman
shaft and side cover from the housing. Remove the side cover
"O" ring and discard.
5. Remove the rack-piston as follows:
a. Insert Ball Retainer Tool J-7539 into the rack-piston
bore with pilot of tool seated in the end of the worm (fig.
3B-37). Turn the stub shaft counter-clockwise while holding
tool tightly against worm. The rack-piston will be forced onto
the tool.
b. Remove the rack-piston with Ball Retainer Tool J-
7539 from gear housing.
6. Remove the adjuster plug as follows:
a. Loosen the adjuster plug locknut and remove.
b. Remove adjuster plug assembly with Spanner W rench
J-7624 (fig. 3B-38). Remove and discard the plug "O" ring.
7. G rasp the stub shaft and pull the valve and shaft
assembly from the housing bore. Separate worm and shaft
and remove the stub shaft cap "O" ring and discard.
8. If the worm or the lower thrust bearing and race
remained in the gear housing, remove them at this time.
Fig. 3 B - 3 4 - R e m o v i n g End C ove r R e ta in in g Ring
Fig. 3 B - 3 5 - R e m o v i n g End Plug