Electrical Instruments; Fuel Quantity Indicator; General - Piper Cherokee Six Service Manual

PIPER CHEROKEE SIX SERVICE MANUAL
9-60. ELECTRICAL INSTRUMENTS.
9-61. REMOVAL AND REPLACEMENT. Refer to Paragraph 9-74 of this section.
9-62. FUEL QUANTITY INDICATOR.
9-63. GENERAL. The two fuel quantity gauges are mounted in the cluster on the
instrument panel. These instruments are calibrated in fractional devisions of one fourth, one
half, three fourths and full. A transmitter unit is installed in each fuel cell. This unit
contains 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.
9-64. TROUBLESHOOTING.
TABLE IX-XIII. FUEL QUANTITY INDICATORS
Trouble
Cause
Remedy
Fuel gauge fails to
indicate.
Broken wiring.
Check and repair.
Gauge not operating.
Replace.
Blown fuse.
Replace fuse.
Fuel gauge indicates
empty when tanks are
full.
Fuel gauge indicates
full with tanks empty.
Incomplete ground.
Incomplete ground.
Check ground connections
at fuel transmitter in
wings.
Check ground at instru-
ment.
Float arm stuck.
Replace fuel transmitter.
Fuel gauge indicates
incorrectly.
Intermittent ground.
Check ground at trans-
mitter and instrument.
Float arm sticky. Replace fuel transmitter.
INSTRUMENTS
Issued: 8/17/72
2L4