Piper COMANCHE PA-24-180 Service Manual page 59

PIPER COMANCHE SERVICE MANUAL
FIGURE 2-16. FUEL STRAINER AND DRAIN FIGURE 2-17. FUEL SELECTOR AND DRAIN
PA-24-180 and PA-24-250, Serial Nos.
PA-24-400
242299 and up, and PA-24-260
2-50 Draining Fuel Valve and Strainers.
a. On PA-24-180 and PA-24-250 aircraft bearing Serial Nos. 24-1 to 24-2298 inclusive, the fuel
strainer, equipped with an easy drain valve is mounted under the right forward section of the fuselage. The
fuel strainer drain (Figure 2-16) on PA-24- 180 and PA-24-250 aircraft bearing Serial Nos 24-2299 and up and
PA-24-260 aircraft is located in the cabin floor just aft of the fuel selector valve and is drained by opening the
access door and moving the easy drain valve handle to the aft position Draining is accomplished within the
cockpit A transparent plastic tube is attached to the drain valve and extends through a hole in the bottom of
the fuselage. Flow of the fuel is observed by means of the transparent tube and should cease as observed
through tube when the handle is released. On the PA-24-400 (Figure 2-17). the fuel is drained from the cockpit
by lifting up the red knob located in the center of the fuel selector The fuel strainer should be drained regularly
to check for water or dirt accumulations.
b The procedure for draining the right and left tanks and lines is to open the easy drain valve for a
few seconds with the fuel tank selector valve on one tank. Then change the fuel selector to the opposite tank
and repeat the process. allowing enough fuel to flow out to clear water from the fuel line as well as the fuel
strainer The same procedure will apply when auxiliary fuel cells are installed by simply selecting the right and
left auxiliary fuel tank
NOTE
During cold weather operation. if the sediment bowls drain slower
than normal or not at all. it could be an indication of ice at the drain
and the aircraft should be hangered to thaw out. and drained
thoroughly
REVISED: 9/10/79 HANDLING AND SERVICING
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