Piper PA-34-200T Seneca II, Service Manual

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PIPER SENECA II SERVICE MANUAL
IX - FUEL SYSTEM 01/01/09
2D24
9-43. RIGGING OF SELECTOR VALVE.
a. Remove the access panel located on the underside of the wing, forward of the main spar, outboard
of the nacelle.
b. Ascertain that the control cable is connected to the selector valve and that the valve is in its center
OFF position. Lubricate the external parts of the selector valve sprocket and control cable
attachment ends with ESSO “Beacon 325” grease or equivalent (MIL-PRF-23827C).
c. Place the fuel selector handle in the cockpit in its OFF position. (The levers centered on the OFF
position of the cover placard.) Adjust and connect the cable end to the cockpit lever.
d. Actuate the selector to ascertain that the valve moves into its three detent positions and the control
levers have a positive clearance between the lever and cover assembly.
e. Reinstall the access panel.
9-44. CLEANING FUEL SYSTEM.
a. To flush fuel tank and selector valve, disconnect the fuel line from the injector.
b. Select a fuel tank; turn on the electric pump and flush fuel through the system until the tank is
empty. Agitation of the fuel within the tank during this operation will help pick up and remove dirt
and other foreign matter from the fuel tank and selector valve.
c. Repeat this procedure for each fuel tank.
d. When all tanks are flushed, clean filter and fuel tank finger screens.
9-45. ELECTRIC FUEL PUMP.
9-46. REMOVAL AND INSTALLATION OF ELECTRIC FUEL PUMP.
There is one electric rotary vane type fuel pump for each engine. The pump is mounted in a bracket on
the aft side of the firewall. To remove pump, proceed as follows:
a. Remove rectangular hatch assembly located on the top of the nacelle, aft of the fire wall.
b. Remove fuel lines from the pump and disconnect the electrical leads.
c. Remove straps holding pump in position and withdraw pump through hatch opening.