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TM 5-4210-220-12
4-18. PUMP, PIPING, AND VALVES-Continued
(13)
Remove acorn nuts (12) from the stop set-screws (13) of
the actuator (3).
(14)
Change position of relevant structural panel FOAM
VALVE, WATER EDUCTOR and FLUSH switches to
'CLOSED'.
(15)
Change the position of the cab WATER EDUCTOR and
FOAM VALVE switch to 'CLOSED'.
(16)
Pressurize the structural panel switches by setting the
MODE switch to 'STRUCT‘
.
(17)
Set the relevant structural panel switch to OPEN to check
the adjustment of the fully open stop setscrew.
(18)
Check scribe marks for proper alinement. If alined go to
step 24.
(19)
If adjustment is necessary, release pressure from actuator by setting relevant structural panel switch
to 'EM'.
(20)
Adjust the fully open stop setscrew in or out 1/2 turn at a time.
(21)
Repeat step 19 thru 22 until the scribe mark on the coupling alines with the scribe mark on the stem nut
or body.
(22)
Install and tighten acorn nut while the actuator is pressurized in the fully open position.
(23)
Set the relevant structural panel switch to CLOSED to check the adjustment of the fully closed
stop setscrew.
(24)
Check scribe marks for proper alinement. If alined go to step 28.
(25)
If adjustment is necessary repeat steps 19 thru 22, but for the CLOSED position.
(26)
Install and tighten acorn nut while the actuator is pressurized in the fully closed position.
4-247
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