Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 63 / 468

STEERING 3B-21
STUB VALVE
SHAFT BODY
B E A R IN G W A SH ERS
Fig. 3 B -5 6 --W o rm and V a lv e B o d y -E x p lo d e d V ie w
stub shaft full travel in both directions several times.
b. Loosen and remove adjuster plug locknut (fig. 3B-61
and 3B-62).
c. Using spanner wrench J-7624, turn the adjuster plug
in (clockwise) until the plug and thrust bearings are firmly
bottom ed, approximately 20 ft. lbs. (Fig. 3B-63).
d. M ark the housing even with one of the holes in the
face of the adjuster plug (Fig. 3B-64).
e. M easure back (CCW direction) 1/2 inch (12.5mm)
and place a second m ark on the housing (fig. 3B-65).
f. Turn adjuster plug counterclockwise until the hole in
the face of the adjuster plug, which was even with the first
m ark, is in line with second m ark (fig. 3B-66).
g. Tighten lock nut securely. Hold (or have held)
adjuster, plug to m aintain alignment of hole with m ark (fig.
3B-67).
5. Install the rack-piston as follows:
a. Lubricate the rack-piston teflon seal with Power
Steering Fluid.
b. Position Seal Com pressor J-8947 (Passenger Cars) J-
7576 (Trucks) against the shoulder in the housing.
c. W ith Ball Retainer J-7539 in place in the rack-piston,
POSITION W O R M PIN
IN VALVE BODY N O TCH
Fig. 3 B - 5 8 - ln s ta llin g V a lve B o d y
push the rack-piston (with teeth toward pitm an shaft
opening), into the housing until Tool J-7539 contacts the
center of worm (fig. 3B-68).
d. Turn the stub shaft clockwise with a 3 /4 " twelve point
deep socket or box end wrench to thread the rack-piston onto
the worm while holding Tool J-7539 against the end of the
worm.
e. When the rack-piston is completely threaded on the
worm, remove Ball R etainer J-7539 and Seal Compressor J-
8947 (Cars) or J-7576 (Trucks).
6. Install the pitm an shaft and side cover as follows:
a. Install a new "O" ring in the pitm an shaft side cover
and retain with chassis lubricant.
b. T urn the stub shaft until the rack-piston teeth are
centered in the pitm an shaft opening, then install the pitman
shaft and side cover so that the center tooth of the pitman
shaft engages the center groove of the rack-piston.
c. Install the side cover bolts and lock washers and
tighten to 30 ft. lbs.
7. Install the rack-piston plug in the rack-piston and
torque to 75 ft. lbs.
Fig. 3B-57~Valve to W orm A lign m e nt Fig. 3 B -5 9 -V a lv e Body Position in Housing