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Copyright . The Boeing Company. See title page for details.
13.TOC.0.2 December 5, 2003
Hydraulic Panel
Electric Hydraulic Pump OVERHEAT Lights
Illuminated (amber) – associated electric motor–driven pump has overheated.
Hydraulic Pump LOW PRESSURE Lights
Illuminated (amber) – output pressure of associated pump is low
Note: When an engine fire warning switch is pulled, the associated engine-driven pump low pressure light is deactivated.
ELECTRIC HYDRAULIC PUMPS Switches
ON – provides power to associated electric motor–driven pump. OFF – electrical power removed from pump.
ENGINE HYDRAULIC PUMPS Switches
ON – de–energizes blocking valve in pump to allow pump pressure to enter
system.
Note: Should remain ON at shutdown to prolong solenoid life.
OFF – energizes blocking valve to block pump output.
Hydraulics -Controls and Indicators
Hydraulic Indications
HYDRAULIC System PRESSURE Indications
Indicates system pressure:
.
Normal pressure (green) – 3000 psi
.
Maximum pressure (red) – 3500 psi. Note: When both pumps for a system are OFF, respective pointer reads zero.
HYDRAULIC System QUANTITY Indications
Non– EIS equipped airplanes:
.
System A: Full 4.7 U.S. gallons; Refill 4.2 U.S. gallons.
.
System B: Full 7.2 U.S. gallons; Refill 6.4 U.S. gallons.
Copyright . The Boeing Company. See title page for details.
13.10.2 December 1, 2000
Hydraulics -Controls and Indicators
EIS equipped airplanes:
.
Indicates digital percentage of hydraulic quantity (green).
.
Refill condition of 88% is valid only when airplane is on the ground.
Flight Control Panel (before Rudder System Enhancement Program (RSEP) modification)
FORWARD OVERHEAD PANEL
FLIGHT CONTROL Switches
STBY RUD – activates standby pump and opens standby rudder shutoff valve to
pressurize standby rudder power control unit.
OFF – closes flight control shutoff valve isolating ailerons, elevators and rudder
from associated hydraulic system pressure.
ON (guarded position) – normal operating position.
Hydraulics -Controls and Indicators 737 Operations Manual
Flight Control LOW PRESSURE Lights
Illuminated (amber) –
.
indicates low hydraulic system (A or B) pressure to ailerons, elevator and
rudder
.
deactivated when associated FLT CONTROL switch is positioned to
STBY RUD and standby rudder shutoff valve opens
.
the A system light indicates A system pressure is low when the rudder
pressure reducer is commanding normal system pressure.
Note: The A system light will remain illuminated for approximately five seconds after A hydraulic system is activated.
STANDBY HYDRAULIC LOW QUANTITY Light
Illuminated (amber) –
.
indicates low quantity in standby hydraulic reservoir
.
always armed.
STANDBY HYDRAULIC LOW PRESSURE Light
Illuminated (amber) –
.
indicates output pressure of standby pump is low
.
armed only when standby pump operation has been selected or automatic
standby function is activated.
ALTERNATE FLAPS Master Switch
OFF (guarded position) – normal operating position.
ARM – closes trailing edge flap bypass valve, activates standby pump, and arms ALTERNATE FLAPS position switch.
Copyright . The Boeing Company. See title page for details.
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本文鏈接地址：737-300機(jī)組操作手冊(cè)Flight Crew Operations Manual FCOM 3(96)
