TM 10-5410-228-24
1.16 HYDRAULIC SYSTEM Continued.
Placing the control switches in the position corresponding to the above modes opens solenoid valves SV2 and
SV6, and closes solenoid valve SV9 by applying +24 Vdc to the coils. All remaining solenoids remain in their
normal de-energized positions. With SV6 energized (open), some portion of the total hydraulic fluid flow is
allowed to bypass the NBC fan motor (M3). Flow control valve FP2 is used to regulate the flow and hence the
speed of the NBC fan motor whenever the control switches are in the non-NBC mode. All other functions are
as previously described.
Valve
SV1
SV2
SV4
SV5
SV6
SV7
SV8
SV9
Energized State
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
Position
Closed
Open
Closed
Closed
Open
Open
Closed
Closed
Figure 1-11. Static Mode, Internal Power, Vent Mode, NBC Off
