Removal Of Fuel Pump 2B8 - Piper Arrow IV Turbo Maintenance Manual

14 Secure the "MEDIUM" power terminal and attach disconnected wires.
15 If the aircraft is equipped with a fuel diverter valve, operate the primer switch and insure the valve is
being energized. Release the primer switch and operate the fuel pump switch in the HI-BOOST position and
insure that the pump operates and that the diverter valve does not.
AUXILIARY FUEL PUMP SYSTEM OPERATIONAL CHECK.
1. Install a calibrated fuel pressure gauge in the fuel line between the electric fuel pump and the engine,
and disconnect the electrical leads to the manifold pressure switch located on the firewall.
2. Turn all cockpit controllable switches off.
Due to possible fuel overflow conduct this operation in a no-
smoking, well ventilated area.
3. With the master switch in the on position, place the electric fuel pump switch in the "LOW" position.
The calibrated fuel pressure gauge should indicate a pressure increase, indicating pump operation. The
pressure should not exceed 10 psi.
4. Set electric fuel pump switch in the "HIGH" position. Record the pressure indicated on the calibrated
pressure gauge. The pressure on the gauge should be higher than that recorded in step c but not more than 24.5
psi.
5. Switch off Master Switch, and reconnect leads to the Manifold Pressure Switch.
6. Ascertain that the fuel pump switch is still in the "HIGH" position, and return the master switch to the
on position. Record the pressure registered on the calibrated pressure gauge. The pressure attained in this step
should be higher than that recorded in step d, but not in excess of 37 psi.
7. Place the fuel pump switch in the off position and depress the prime switch. Record the pressure
indicated and check against that recorded in step d. The pressure attained in this step should be higher than that
recorded in step d but not in excess of 37 psi.
ELECTRIC FUEL PUMP. (Weldon) (PA-28RT-201)
REMOVAL OF FUEL PUMP.
1. Remove the cowling by releasing the cowl fasteners and removing the screws around the nose gear
and across the aft edge of the cowl.
2. Ascertain the fuel shutoff is in the off position.
3. Disconnect the electrical leads from the pump.
4. Disconnect the fuel lines from the pump.
5. Remove the cap screws, washers and plate and remove the pump from the airplane.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
WARNING
2B8
28-20-14
Page 28-13
Revised: August 17, 1982