TM 55-1730-229-12
AG 320A0-OMM-000
TO 35C2-3-473-1
TM 1730-12/1
Hydraulic Control Panel, Controls and Indicators (continued)
Table 2-2.
Control or
Function
Description
Indicator
Hydraulic Manifold
RETURN fluid
Site glass
Permits viewing fluid that passes through
RETURN BLEED valve.
observation
window
RETURN BLEED
Permits (when open) bleeding of air bubbles
Cartridge shutoff
from fluid return circuit.
valve (manual)
valve
RESERVOIR DRAIN
Permits (when open) draining the reservoir
Cartridge shutoff
while retaining fluid in remainder of
valve (manual)
valve
system.
PRESSURE RELIEF
Permits setting of maximum system pressure
Adjustable relief
allowable for the specific aircraft being
valve (manual)
valve
powered. Pump (with pressure compensator)
will maintain the fluid pressure to which
the PRESSURE RELIEF valve has been set.
Permits connection of drain hose during
SYSTEM DRAIN
Threaded connector
reservoir or system draining.
connector
SYSTEM DRAIN
Permits (when open) draining the system of
Cartridge shutoff
fluid.
valve (manual)
valve
HIGH PRESSURE
Permits viewing fluid that passes through
Site glass
HIGH PRESSURE BLEED valve.
fluid obser-
vation window
Permits (when open) bleeding of air bubbles
HIGH PRESSURE
Cartridge shutoff
from fluid in high pressure circuit.
valve (manual)
BLEED valve
Threaded connector
GAUGE CALIB
Permits connection of separate test gauge
in parallel with OUTPUT PRESSURE gauge for
connector
calibration when gauge shutoff is closed.
Isolates (when closed) the OUTPUT PRESSURE
Cartridge shutoff
GAUGE SHUTOFF
gauge from the high pressure lines.
valve (manual)
valve
Applies (when open) high pressure fluid to
gauge to permit measurement.
2-11
