PIPER COMASCHE SERVICE MANl"AL FIGt'RE 2·16. rttt, STRAINER AND DRAIN PA-2+180 and PA-2+250. Serial Nos, FIGt:RE 2·17. FrEL SELECTOR AND DRAIN PA·2+400 2+2299 and up. and PA·2+260 2-50. Draining Fuel Vain and Strainers. a, On PA-:!4-180 and PA-24'::!50 aircraft bearing Serial ~os. 24-1 to 24-2298 inclusive. the fud strainer.
equipped \\ ith 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 ;\os, 24-2299 and up and PA'::!4-260 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. Thefuel 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, ~OTE 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 ten HANDLI!'lG AND SERVICING