Troubleshooting Chart (Fuel System) - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CIEFTAIN SERVICE MANUAL
TABLE IX-IV. TROUBLESHOOTING CHART (FUEL SYSTEM)
Trouble
Cause
Remedy
Fuel gauge fails to
indicate proper
tank level.
NOTE: With current
off, gauges will
indicate fuel level
as existed when
current was shut off
or failed.
Circuit breaker out.
Broken wire.
Gauge inoperative.
Tank selector switch
inoperative.
Incomplete ground.
Reset and check.
Check and repair.
Replace.
Repair or replace.
Check ground connec-
tions at fuel transmit-
ters in wings and at
gauge.
Float and arm as-
sembly of fuel trans-
mitter(s) in wing
sticking.
Check fuel transmitters
in wings and repair or
replace.
Fuel gauge indi-
cating approximately
1/2 tank when tank
is full but will
function normally
on other tank.
Inboard fuel transmit-
ter assembly grounded.
Float and arm assembly
of fuel transmitter(s)
in wing sticking.
Check inboard fue'
transmitter installation
and repair.
Check fuel transrritters
in wings and repair or
replace.
No fuel pressure
indication.
Emergency shutoff
valve off.
Turn on.
Fuel valve stuck.
No fuel in tanks.
Filters dirty.
Check valve.
Check fuel, fill.
Clean filters.
FUEL SYSTEM
Reissued: 9/23/80
2L14