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STEERING 9-37
NUT
Fig. 69—Control Valve Ball Stud Seal Replacement
(Service Type)
4. Center the ball stud, seal and clamp at opening in
adapter housing, then install spacer, bolt and nut.
Removal
1. Raise the front of the vehicle off the floor and place
it on stands.
2. Remove the relay rod to control valve clamp bolt.
3. Disconnect the two pump to control valve hose cdn-
nections and allow fluid to drain into a container,
then disconnect the two remaining valve to power
cylinder hoses.
4. Remove the retaining nut from the ball stud to pitman
arm connection and disconnect the control valve
from the pitman arm.
5. Turn the pitman arm to the right clear of the control
valve and unscrew the control valve from the relay
rod.
6. Remove the control valve from the vehicle.
Installation
1. Install the control valve on the vehicle by reversing
the removal procedure.
2. Reconnect the hydraulic lines, fill the system with
fluid and bleed out air using the procedure outlined
under "Maintenance and Adjustments/' Grease ball
joint.
POWER CYLINDER (Fig. 70)
Chevy II and Corvette
Removal
1. Disconnect the two hydraulic lines connected to the
power cylinder and drain fluid into a container. Do
not reuse.
2. Remove cotter pin, nut, retainer and grommet from
power cylinder rod attached to the frame bracket.
3. Also remove grommet and retainer from bracket if
replacement parts are required.
1. Snap Ring
2. End Plug and
Lube Fitting
3. " O " Ring
Fig. 70—Power Cylinder—Exploded View
4. Spring
5. Spring Seat
6. Ball Stud
7. Ball Seat
8. Ball Stud Seal
9. Piston Body
10. Piston Rod Seal
11. Backup Washer
•12. Scraper Element
13. Piston Rod Scraper
14. Snap Ring
15. Piston Rod
CHEVROLET CHASSIS SERVICE MANUAL
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