Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 68 / 468

3B-26 OVERHAUL MANUAL
Fig. 3 B -7 3 ~ R e m o v in g S p o o l fro m H o u s in g Fig. 3 B -7 5 ~ R e m o v in g P lu g -to -S le eve Key
NOTE:
Always use a new nut.
Valve Balancing (Fig. 3B-83)
The control valve m ust be adjusted, after being
disassembled, as outlined in the following procedure. The
same procedure may be followed to correct a complaint of
harder steering effort required in one direction than the other.
See Figure 3B-83.
1. Install valve in vehicle. Connect all hoses and fill the
pum p reservoir with oil. Do not connect the piston rod to the
frame bracket. If the vehicle is already in operation, it will
be necessary to detach the piston rod from the frame bracket.
2. W ith the car on a hoist, start the engine. One of the
following two conditions will exist.
a. If the piston rod remains retracted, turn the adjusting
nut clockwise until the rod begins to move out. Then turn
the nut counter-clockwise until the rod just begins to move
in. Now turn the nut clockwise to exactly one-half the
rotation needed to change the direction of the piston rod
movement.
b. If the rod extends upon starting the pump, move the
nut counter-clockwise until the rod begins to move in. Now
position the nut exactly one-half the rotation needed to
change the direction of the piston rod movement.
CAUTION: Do not turn the nut back and forth
more than is absolutely necessary to balance the
valve.
3. W ith the valve balanced it should be possible to move
the rod in and out manually.
4. T urn off the engine and connect the cylinder rod to
the frame bracket.
5. R estart the engine. If the front wheels (still on the
hoist) do not turn in either direction from center, the valve
has been properly balanced. C orrect the valve adjustm ent if
necessary.
6. When the valve is properly adjusted, grease end of
valve and install dust cap.
Fig. 3B -74-R em oving Valve Parts from Shaft Fig. 3B-76--Seal w ith Clam p A ttachm ent