737 Flight Crew Operations Manual
Hydraulics -
Controls and Indicators
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13.10.2 D6-27370-866-EGP
Hydraulic Indications
1 MFD System (SYS) Switch
Push – SYS
• displays hydraulic indications on lower DU; or the inboard DU if the
MAIN PANEL DUs switch is placed to the INBD MFD position.
• second push removes indications from the respective DU.
2 HYDRAULIC System QUANTITY Indications (white)
Indicates digital percentage (0% to 106%) of hydraulic quantity.
Note: Quantity also displayed at each reservoir.
3 HYDRAULIC System PRESSURE Indications (white)
Indicates system pressure:
• Normal pressure – 3000 psi
• Maximum pressure – 3500 psi.
Note: When both pumps for a system are OFF, the indication may read hydraulic
system reservoir pressure, normally less than 100 psi.
4 REFILL Indication (RF) (white)
Illuminated (white) – hydraulic quantity below 76%.
Note: Valid only when airplane is on ground with both engines shutdown or after
landing with flaps up during taxi–in.
30003000
98 67
B
PRESS
QTY %
HYDRAULIC
A
RF
3
2 4
1
LOWER DISPLAY UNIT
CENTER FORWARD PANEL
March 27, 2009