Piper PA-24 Comanche Service Manual page 679

PIPER COMANCHE SERVICE MANUAL
II·i8. Fuel QulUlbry ladieawl'. (PA-Z4-Z'O. SeriaJ Nos. Z....ZM4 and up. PA·Z....Z60 and PA.Z4-400.)
11·79. GcneraI. The Comanche incorporates only one fuel quantity PUle
in
this system. This
puce
will
indicate the amount of fuel in the cell that is selected. This ll'rlftICII\ent is made posaible by a selector
switch mounted on the
fuel. selector valve. The switch is located directly below the fuel selector plate.
An over-ride system is incolllorated so that it is possible
1'0
check the amount of fuel available in the
remaining cells. without moving the selector hUldle to that cell position. This is accomplished by depressing
the red button (located on the fuel selector plate) under the desired fuel cell position. The fuel puge will
indi~te
the &mount of fuel available in that ceil. When the red button is released the indicatinl system will
ret\lm to its nonnal operation of indicatin, the amount of fuel in the rank selectee!.
11-80. Removal And Replacement. Refer to P.,."aph 11·20 of this section.
11·81. Troubleshoorin,.
TABLE XI·XV. '11EI. Q11ANTJTY INDICATORS
Trouble
Caue
Remedy
Fuel gaule fails to Brokm
winna.
Check continuity and
indicate. repair.
Gaqc not operatina. Replace panel unit.
Float is fdled with
Replace sender unit.
fuel.
Circuit breaker OUt. Check for possible shorr
circuit then reset
breaker.
Oefect:ive selector
Check switch installa-
switch. tion. replace Iwitch if
necessary.
Fuel sause indicates Incomplete Ifound. Check wmnl. sender
full constantly. unit and ,aule.
Repair or replace.
INSTRUMENTS
ISSUED: 8/18/72
3819
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