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

Page: 1538 / 1956

PAGE 6
Feb 28/07
7K20
81-20-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Flange Support Shim Installation
Figure 2
Effectivity
4636001 thru 4636194 only
H. Start engine and operate for 3 - 4 minutes at idle to allow engine oil pressure and flow to stabilize.
I. Check all oil connections for leakage, and tighten or repair as needed.
3. Inspections
A. Turbocharger and Exhaust System - Visual Inspection
(1) With the engine shut down, inspect all components of the air induction system for loose
connections, cuts, cracks, punctures, corrosion or other evidence of deterioration. If evidence is
found of any condition that could permit air leakage between the air cleaner and the
turbocharger compressor, proceed as follows:
(1) Disconnect the air duct from the compressor air inlet and inspect the edges of the
compressor wheel blades for damage. Also examine the wheel for excessive dirt buildup
and oiliness which would indicate seal leakage, and check for evidence of wheel rub on
the compressor housing.
(2) Replace damaged air ducting components.
(3) Reconnect the air ducting to the compressor air inlet and tighten attaching parts securely.
(2) Check the air duct connections between the compressor and the engine intake manifold and
between the intake manifold and engine. Tighten any loose connections.
(3) Verify the engine air cleaner has been properly serviced (see Induction Air Filter, 12-10-00).
(4) Inspect the exhaust system for leakage, especially at the exhaust manifold connection to the
turbocharger turbine inlet and at the engine exhaust manifold gasket.
(5) Disconnect the exhaust ducting from the turbine outlet and examine the turbine wheel blades
for damage. Look for oil in the turbine wheel housing (indicative of seal leakage), and check for
evidence of wheel rub on the housing.
(6) Check for oil leakage at the connections to the turbocharger oil inlet and drain ports. Tighten
connections or replace gaskets, fittings, etc. as required.
(7) On left-hand tail pipe, disconnect the engine crankcase breather tube and remove the lower
tube assembly from the tail pipe at the slip joint. Remove any contaminate buildup
accumulated. Accumulation may be very hard and may require scraping or sanding to remove.
Ensure balance of breather is free of any restrictions to air flow.