Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 624 / 1956

PAGE 4
Feb 28/07
3G8
28-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
5. Fuel Drain Valve
A. Description
Fuel drain valves are located under each inboard wing. They are actuated either: by pushing up on
the screwdriver slot for fuel check or by removal of the entire valve for rapid draining.
NOTE: Nut and nut retainer are secured inside tank and do not need to be removed.
B. O-ring Replacement
(1) Drain fuel by turning hexagonal base of drain valve. Remove drain valve from wing.
(2) Remove external O-ring located on hexagonal base.
(3) Remove snap ring to release inner assembly.
(4) Remove inner assembly by pushing up on drain screw with a screwdriver.
(5) Remove internal O-ring.
(6) Soak replacement O-rings in hydraulic fluid and coat with fluid compatible gel.
(7) Install O-rings.
(8) Replace inner assembly. Replace snap ring.
(9) Install drain valve in wing.
6. Electric Boost Pump
These pumps are located in each collector tank built into each wing wheel well area. Access to each
pump is through the wheel well and removal of the sealed access cover on the side of the collector tank.
NOTE: Wing tank and collector tank must be drained prior to removal of the collector tank access cover.
Refer to Collector Tank for removal and installation instructions for the electric boost pump.
Fuel Drain Valve
Figure 2