MOONEY INTERNATIONAL CORPORATION
M20V SERVICE AND MAINTENANCE MANUAL
Page
Date
5
MAR 2017
Rev Date
28-00-00 - GENERAL
Internally sealed, integral fuel tanks are in the L & R, for-
ward, inboard sections of the wing. Fuel feeds from ei-
ther tank to a selector valve through a gascolator, with a
low- point drain, through the emergency boost pump to
the engine- driven fuel pump and to the fuel injector
system on the engine. Fuel quantity indicators are elec-
trically operated with 2 transmitters (inboard and out
board) located in each tank.
Fuel that is not burned at combustion is routed back
through the fuel selector valve and returned to the
source fuel tank.
FUEL CHECK
VENT
OUTBOARD
OUTLET SCREEN
DRAIN
LEFT FUEL TANK
SELECTOR VALVE
FIREWALL
INDICATOR
FUEL FLOW
FUEL FLOW
TRANSDUCER
FUEL METERING
UNIT
FUEL PUMP
ENGINE DRIVEN
GASCOLATOR
DRAIN
ELECTRIC
FUEL PUMP
FILLER CAP
VENT
R. FUEL QTY.
L. FUEL QTY.
INBOARD
OUTLET
RIGHT FUEL TANK
DRAIN VALVE
FILLER
SCREEN
ASSY
INDICATOR
INDICATOR
ASSY
TRANSMITTER
TRANSMITTER
OUTBOARD
TRANSMITTER
VALVE *
VALVE
VALVE
INBOARD
TRANSMITTER
CAP
FUEL
DISTRIBUTION
SYSTEM
* A PLACARD LOCATED ADJACENT TO
FUEL CHECK VALVE INDICATES DIRECTION
OF FLOW. THE WORD “HINGE” ON TOP
OF THE FUEL CHECK VALVE MUST
BE ORIENTED FACING UP, TOWARDS CABIN
FLOOR, FOR CHECK VALVE TO FUNCTION CORRECTLY.
FUEL SYSTEM
FIGURE 28- 1
28-00-00
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