192 Auto Suspension and Steering
Worm
Spool valve
Torsion
bar
Lower shaft
Valve body
Oil return port
Oil pressure
port
To upper side
of rack-piston
High pressure
Low pressure
A
Worm
Spool valve
Torsion
bar
Lower shaft
Valve body
Oil return port
Oil pressure
port
High pressure
Low pressure
To lower side of rack-piston
B
Figure 9-55. A—Spool valve has turned slightly to the left. It is now in a left turn position. (General Motors) B—The spool valve has
rotated slightly to the right and is now in a right turn position.