Piper Arrow IV Turbo Maintenance Manual page 318

FUEL QUANTITY INDICATOR.
The two quantity gauges are mounted in the cluster on the instrument panel. These instruments are
calibrated in divisions of 10, 20, 30 gallons and full. Two transmitter units are installed in each fuel cell. These
units contain a resistance strip and a movable control arm. The position of this arm is controlled by a float in
the fuel cell and this position is transmitted electrically to the indicator gauge to show the amount of fuel in the
cell.
Trouble
Fuel gauge fails to indicate.
Fuel gauge indicates empty
when tanks are full.
Fuel gauge indicates full
with tanks empty.
Fuel gauge indicates incor-
rectly.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
CHART 2803. FUEL QUANTITY INDICATORS
Cause
Broken wiring.
Gauge not operating.
Incomplete ground.
Incomplete ground.
Float arm stuck.
Intermittent electrical
connection.
Float arm sticky.
Insulated transmitter
grounded.
2B15
Remedy
Check and repair.
Replace.
Check ground connections
at fuel transmitter in wings.
Check ground at
instrument.
Replace fuel transmitter.
Check ground at grounded
transmitter and electrical
connections.
Replace fuel transmitter.
Remove transmitter and
sealant. Check for metal
particles in sealant. Reseal
to prevent ground.
28-40-05
Page 28-20
Revised: December 1, 1978