Fuel System Cleaning; Fuel Strainers - Piper PA-24 Comanche Service Manual

PIPER
COMA~CHE
SERVICE
MA~tAL
d. lf fuel selector switches are installed. connect wiring and carefully slide the main switch ( 12. F i g .
X-11 or X-I J) on the valve shaft (I). Should the main switch fit loose on the valve shaft. shim the
flat
01
switch hole with I
~
x
7
If! pressure sensitive adhesive tape (II). Spec. PPP-T-60B. Type III. Clas.. I.
e.
Reinstall the selector handle and rotate it through its various positions. at the same time flushing
the fuel lines.
~-I
K Cleaning The Fuel System.
a. To flush fuel tanks and selector valve. disconnect fuel line at the carburetor or injector.
b. Select a fuel tank. turn on the electric fuel pumpts) and flush fuel through the
~ystem
until it
is determined that there is no dirt and foreign "matter in the fuel valve.Jines or tank. During this operation.
agitation of the fuel \\ ithin t he tank will help pick up and remove any dirt. Repeatthis procedure for each tank.
c. When all tanks are flushed. clean the filter assembly.
~-19.
Fuel Strainers.
·X-10. Fuel Strainer.
(PA-24-I~O
and PA-24-250. Serial Nos. 24-1 to 24-2174. 24-2176 to 24-22910:) The
fuel bowl and strainer is reached through an access door located under the right forward section of the
fuselage.
a. Close the fuel selector valve.
b. Loosen and swing the bowl bail up so that the bowl may be removed.
c. Remove the bowl gasket. clean the filter screen and check for damage. If the screen is punctured
or the wire
may
be fraying from the screen. it should be replaced. Check the quick drain. if it has been leaking
the:
"0"
ring should be replaced.
d. Reinstall the screen. a new gasket. bowl and secure the bail. Safety the bail nut and the: bail..
1'-21. Fuel Strainer. (PA-24-IRO and PA-24-250. Serial
~os.
24-2175.24-2299 and up and PA-24-2t101
a. Close the fuel selector valve.
b. To remove the fuel strainer and sediment bowl. remove the panel at the bottom of the fuselage.
c. Loosen the screw securing the bowl clamp. remove the clamp and bowl. If it is intended to reuse the
combination screen and bowl seal. be careful not to damage the gasket when separating the bowl from
it~
housing.
d. Clean the bowl. check the drain valve
"0"
ring. release snap ring securing the screen and clean
screen. Check the: screen and seal for damage.
e. Reinstall the screen and ascertain that the snap ring is secure. Install the bowl. secure and safety.
Turn t he fuel \ alve on and determine that the bowl seal is not leaking.
f.
Position fuel drain hose and secure the fuselage panel.
g. To remove the strainer assembly. reach through the drain lever access hole in the floor panel.
disconnect fuel lines.
remove
the screws securing the bowl and lower through the access panel in the bottom
of the fuselage.
Revised: 11/1/82
2J6