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

Page: 1361 / 1956

PAGE 1
Feb 28/07 7D11
71-00-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
GENERAL
1. Description
The PA-46-350P, Malibu Mirage, is powered by a Textron Lycoming TIO-540-AE2A series six cylinder,
direct drive, wet sump, horizontally opposed, fuel injected, dual turbocharged, air cooled engine with a
compression ratio of 7.3:1, rated at 350 hp at 2,500 rpm and designed to operate on 100 or 100LL
(minimum) octane aviation grade fuel.
The engine cowling is cantilevered from the firewall with secondary supports from the nose gear door
frame. The engine cowling consists of an upper and dual lower sections which are fabricated from sheet
metal with bonded stiffeners. The metal nose cowl is split through the vertical propeller centerline to
permit complete cowl removal without removing the propeller.
The induction system consists of a dry type air filter, an alternate air door, a Bendix servo regulator
continuous flow type RSA-10ED1 fuel injector and an AN type fuel supply pump as an integral part of the
fuel injector system. Dual AiResearch turbochargers are mounted as an integral part of the engine which
incorporate bleed air sources for cabin pressurization. Automatic waste gate control of the turbochargers
provides constant air pressure at the fuel injector inlet from sea level to critical altitude.
This engine is equipped with dual pressurized Slick type 6360 and 6363 magnetos. One magneto has a
retard breaker providing fixed retard, long duration boosted spark for starting. A source of dc power and
a starting vibrator are required to complete the installation. The spark advance is 20° BTC.
In addition to the aforementioned components, each engine is equipped with dual alternators, geared
starter, and dual pneumatic vacuum pumps. Engine mounts are steel tubing construction attached at the
firewall and incorporate vibration absorbing dynafocal mounts. From the exhaust stacks, gases are
directed to individual turbocharger exhaust plenums, through or around the turbo turbine, as required,
and overboard at bottom rear of the engine cowling on each side.
The lubrication system is of the pressure wet sump type. The oil pump, which is located in the accessory
housing, draws oil through a drilled passage leading from the oil suction screen located in the sump. The
oil from the pump then enters a drilled passage in the accessory housing which feeds the oil to a
threaded connection on the rear face of the accessory housing, where a flexible line leads the oil to the
external oil cooler. Pressure oil from the oil cooler travels thru tubing to a remote pressure oil filter and
then is returned thru tubing to a threaded connection on the accessory housing and into the engine. In
the event that cold oil or an obstruction should restrict the oil flow through the cooler, an oil cooler
bypass valve is provided to pass the oil directly from the oil pump to the oil pressure filter.
The oil filter element, located on the engine mount frame, provides a means of filtering from the oil any
solid particles that may have passed through the suction screen in the sump. After being filtered, the oil
is fed through a drilled passage to the oil pressure relief valve, located in the upper left side of the
accessory housing at the rear of the engine. This relief valve regulates the engine oil pressure by
allowing excessive oil to return to the sump, while the balance of the pressure oil is fed to the main oil
gallery in the right half of the crankcase. Residual oil is returned by gravity to the sump, where after
passing through a screen it is again circulated through the engine.
2. Troubleshooting
See Chart 1.