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Page Title:
Table 2-1 Controls and Instrument (Cont.) |
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 TM 55-4920-442-13&P
Table 2-1 Controls and Instrument (Cont.)
Item No.
Hydraulic Schematic
Nomenclature
Function or Use
Low Pressure
--
Lights when high differential pressure
Filter Pressure
exists across low pressure filter
Fill Filter P
--
Indicates pressure differential between
Light
input and output of fill filter
Booster Pump Low
--
Lights when boost pump pressure drops
Pressure Indicator
below 40 PSIG
HP Start
--
Starts HP pump motor
Pushbutton
HP Stop
--
Stops HP pump motor
Pushbutton
Fill Pump Switch
--
Energizes fill pump motor to fill test
system or aircraft system
Reset
--
Resets start circuit after low pressure
shutdown
Lights Switch
--
Controls illumination of panel lights
HP Compensator
--
Maintains constant pressure in hydraulic
Control
system as delivered by the pump
HP Volume Control
--
Regulates volume of high pressure
hydraulic fluid delivered by the pump
from 0-30 GPM
HP Relief Valve
31
Relieves excessive pressure in stand
output line by bleeding hydraulic fluid
to suction return line (located adjacent
to high pressure filter)
Flow Control Valve
24
Controls flow of hydraulic fluid to
test stand outlet ports
2-10
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