THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 1
Jun 1/03
3D7
28-40-00
INDICATING
These airplanes are equipped with traditional analog dual gauges to indicate fuel quantity. Inboard and
outboard fuel tanks in each wing are interconnected and have a total capacity of 53.5
gallons per wing. The cumulative quantity of fuel in each set of tanks is read on a single fuel quantity
gauge with dual (left and right) indications (see Figure 1). The gauge is mounted at the bottom right of
the pilot’s flight instruments.
Fuel Quantity Dual Gauge
Figure 1
1. Fuel Quantity Sender and Gauge Check
To check fuel quantity sender units and fuel quantity gauge while installed in airplane:
A. Level airplane laterally and longitudinally ± 1° (refer to Leveling, 8-20-00).
B. Place battery switch in OFF position.
C. Connect external power supply to airplane. Adjust to provide 24 to 28 Vdc.
D. Desired fuel quantity in side to be tested is obtained by either:
(1) Completely draining fuel tanks on the side to be checked. Then adding fuel in increments
specified in Chart 1; or,
(2) with tanks completely full, defueling each tank 10 gallons at a time.
(3) After measured amount has been added or drained, vibrate tank by bumping lower wing
surface. Vibrate gauge by tapping gauge glass with fingers.
WARNING: WHEN TESTING FUEL SENDER ELECTRICAL RESISTANCE, WITH SENDER
INSTALLED IN THE AIRPLANE, ENSURE ONLY A HIGH IMPEDANCE OHM-
METER IS USED.
E. If gauge does not read within tolerances specified in Chart 1, verify sender’s resistance is as
specified in Chart 1.
F. If sender checks out OK, remove gauge and bench test/adjust as specified in paragraph 2, below.
G. If gauge or sender fails to meet accuracy requirements in Chart 1, replace gauge or sender, as
applicable.
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