Electric Fuel Pump Removal; Fuel Quantity Sender Unit; Fuel Quantity Sender/Gauge Check - Piper PA-44-180 SEMINOLE Maintenance Manual

ELECTRIC FUEL PUMP.
REMOVAL AND INSTALLATION OF ELECTRIC FUEL PUMP.
There is one electric fuel pump for each engine. The pump is mounted in the inboard side of wing. To
remove pump. proceed as follows:
1. Remove access cover located on the bottom of the inboard wing.
2. Remove the fuel lines from the pump, and disconnect the electrical wiring.
3. Remove bolts holding pump in position and withdraw pump through access opening.
4. Do not attempt to disassemble or repair fuel pump. If fuel pump proves to be defective it should be
replaced.
5. Reinstall pump in reverse order of removal.
INDICATING.

FUEL QUANTITY SENDER UNIT.

The fuel cells in each nacelle are interconnected and have a total capacity of 11 0
gallons. Fuel quantity sender units mounted in each fuel cell transmit electrically the
quantity of fuel in each cell, to fuel quantity gauges mounted in the instrument panel.
A dipstick in the side pocket of the cabin, can also be used to manually check the
indicating system.
FUEL QUANTITY SENDER/GAUGE CHECK (INSTALLED).
Fuel quantity sender units and fuel quantity gauges can be checked while mounted in the airplane by using the
following procedure:
1. Put the fuel selector levers in the "ON" position. Completely drain fuel cell that relates to the fuel
quantity sender and gauge to be checked. (Refer to Draining Fuel System, Chapter 12)
2. Level airplane laterally. (Refer to Leveling, Chapter 8)
An external power supply providing 14 ± .2 volts should be utilized for the fuel
Quantity Sender/Gauge Check.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
— CAUTION —
DO NOT RUN PUMP DRY.
— Note —
— Note —
2B14
2 8 - 4 1 - 0 1
Page 28-19
Revised: May 15, 1989