1
Felt washer
6
Piston spring control washer
2
Oil seal ring
7
Piston stop block
3
Piston
8
Piston centering spring
4
Piston extension
9
Block oil seal
5
Spring retainer pin
Figure 69. Operating valve, sectional view.
(3)
Remove the four mounting nuts, lockwashers, and spacers from the mounting studs.
(4)
Remove the operating valve.
(5)
Use an open-end wrench and unscrew the regulator valve spring cover (10, fig. 70).
(6)
Unscrew and remove the locknut (9).
(7)
Turn the spring adjusting screw (7) counterclockwise and remove it from the valve bonnet (1).
(8)
Pull out and remove the valve spring (6).
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