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 TM 55-1905-219-14-7
3-208. DIRECTIONAL CONTROL VALVE - MAINTENANCE INSTRUCTIONS
(Continued).
LOCATION
ITEM
ACTION
REMARKS
3
Valve Spools
Each spool is constructed for a specific valve application and is dynamically and hydrostatically balanced to
prevent pressure forces from moving the spool within the bore. The spool used is a four-way type.
4. Methods of Control
SOLENOID - Push type solenoids are used to control movement of the spool. A manual plunger is available in
each solenoid to check spool movement during test. Push type solenoids move the spool away from the solenoid when
energized.
When a valve uses two solenoids, only one solenoid
should be energized at a time or damage may result.
3-3218
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