Piper Comanche PA-24 Service Manual page 822

PIPER COMANCHE SERVICE MANUAL
11·78. Fuel Quanacy IlldiealDr. (PA·24-250. Serial Nos. 24-2844 and up. PA·24-260 and PA·24-400.l
11·79 GCDmII. Th. Comanche incorporat .. only on. fu.1 quanacy P ....
in this system. This pu .. wiIJ
indiat. the amount of fu.1 in the
cell
that is .. lectaI. This arruIJcment is made possibl. by a setector
switch mounted on the fuel setector valve. The switch is located directly below the fuel selector plate.
An over·ride system IS incorporated 10 that it is poaible to check the: amount of fuel available in the
remaininJ eelb. without moving the sel.ctor handl. ro thlt cell posiaon. This is .ccomplished by dcPressilll
the r.d button (locar.d on the fu.1 ",Iectar plare) under the dcslred fuel cell position. Th. fu.1 pug. will
indicate the amount of fuel available in that cell. When the red bunen is releued the indicating system will
retum to ia normal operation of indicatiftB the amount of fuel in the tank selected.
11·80. R.moval And Rcpta«mCftt. R.fer to Paragr.ph 11·20 of 'his section.
11·81. Troubleshooting.
TABLE XI·XV. FUEL QUANTITY INDICATORS
Trouble
e.-
Fuel gaug. faib
'0
Broken winng.
indicate.
G ..... not operatina.
Floa, i. filled with
fuel.
Circuit breaker out.
Defective selector
switch.
Fuel ga.uge indicates
Incomplete ground.
full constantly
3
G19
Remedy
Check continuity Uld
repair.
Replace panel unit.
RepLace sender unit.
Ch.ck for powble short
cirCUit then reet
breaker
Check switch Insulla.·
tion. replace switch if
necessary
Ch.ck wiring. sender
unit a.nd gauge.
Repa.ir or replace.
INSTRUMENTS
ISSUED: 8/18/72