737 Flight Crew Operations Manual
Hydraulics Chapter 13
Controls and Indicators Section 10
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D6-27370-866-EGP 13.10.1
10 Controls and IndicatorsControls and IndicatorsFile Highlight
Hydraulic Panel
1 Electric Hydraulic Pump OVERHEAT Lights
Illuminated (amber) – Hydraulic fluid used to cool and lubricate the
corresponding electric motor driven pump has overheated or the pump itself has
overheated.
2 Hydraulic Pump LOW PRESSURE Lights
Illuminated (amber) – output pressure of associated pump is low.
Note: When an engine fire switch is pulled, the low pressure light is deactivated.
3 ELECTRIC HYDRAULIC PUMPS Switches
ON – provides power to associated electric motor–driven pump.
OFF – electrical power removed from pump.
4 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.
OFF
ON
OFF
ON
B
ELEC 1 ENG 2ELEC 2ENG 1
A
HYD PUMPS
PRESSURE
LOW
PRESSURE
LOW
PRESSURE
LOW
PRESSURE
LOW
OVERHEATOVERHEAT
FORWARD OVERHEAD PANEL
4
3
1
2
September 18, 2008
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