Servicing Five Position Fuel Valve (Hoof) - Piper PA-24 Comanche Service Manual

g.
h.
pressure.
PIPER COMANCHE SERVICE MANt:AL
Rotate fuel selector to check for smooth operation and to insure proper seating in detent POSitiO.
Before reinstalling the valve, it should be checked for leaks and correct operation using 50 PSI
~OTE
If valve is submerged in water for test. insure all water is removed.
I.
After reinstallation of valve, check operation and for fuel leaks.
8·15. Sen-icing Five Position Fuel Valve (Hoof). (PA-24-250 and PA-24-260)
~ormally
the five position
valve need only be serviced when there are indications of binding or leakage around the valve shaft (I.
Figure 8- I 2). at the mating surface of the upper valve body (10) and lower valve body (6) or
if reason to
believe that there is leakage through the valve when in an off position, Replacement of
"0"
rings will
usuallv correct this condition.
a', With the valve assembly removed from the aircraft. remove the safety wire and disassemble the
valve assernblv.
b. Check the shaft hole of the va he body ( 10) where the
"0"
ring (2) makes contacts for roughness that
might damage the
"0"
ring. Polish the hole surface to remove any roughness.
•
INTENTIONALLY LEFT BLANK
REVISED: 11/1/82
2J4
Fl.'EL S)·5T.