GMC 1976 ZEO 6083 Maintenance Manual page 567

Figure 51-Installing Valve Body
2. Lubricate the valve body teflon rings and a
new cap to body "O" ring with Power Steering Fluid.
Install the cap to body "O" ring in the valve body so
it is seated against the lower shaft cap. Align the
NARROW NOTCH in the valve body with pin in
the worm, then install the valve and shaft assembly
in the gear housing (figure 50). Apply pressure to the
VALVE BODY when installing . If pressure is ap-
plied to the stub shaft during installation, the shaft
may be forced out of the valve body (figure 51) .
Figure 52-Valve Body in Housing
STEERING 9- 3 5
Figure 53-Installing Adjuster Plug
4. Adjust thrust bearing preload as follows:
NOTE :
The valve body is properly seated when
the oil return hole in the housing is entirely un-
covered (figure 52).
3 . Lubricate a new adjuster plug "O" ring with
Power Steering Fluid and install in groove on ad-
juster plug. Place Seal Protector J-6222 over stub
shaft, then install the adjuster plug assembly in the
housing until it seats against the valve body (figure
53). Remove Seal Protector.
a. Using spanner wrench J-7624, turn ad-
juster plug in (clockwise) until the plug and thrust
bearing are firmly bottomed (approximately 20 ft .
lbs.) (figure 58).)
b. Place a mark on the hous-
ing even with one of the holes in the face of the
adjuster plug (figure 59).
c. Measure back (counterclockwise) 1/2 inch
and place a second mark on the housing (figure 60).
d. Turn the adjuster plug counterclockwise
until the hole in the face of the plug, which was even
with the first mark, is even with the second mark
(figure 61).
e. Tighten lock nut securely . Hold adjuster
plug to be sure that it does not move when the lock
nut is tightened (figure 62).
f. Using torque wrench J-7754 with a 3/8"-12
point socket, turn the stub shaft and measure the