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1.
Basic Procedures
Use the following procedures whenever applicable:
A.
To facilitate and ensure proper installation, tag and/or mark all parts and hardware as to their
location before they are removed or disassembled.
B.
When removing any tubes or engine parts, look for indications of scoring, burning or other
undesirable conditions. Tag any unserviceable parts or units for investigation and possible repair.
CAUTION: DUST CAPS USED TO PROTECT OPEN LINES SHOULD ALWAYS BE INSTALLED
OVER THE TUBE ENDS AND NOT IN THE TUBE ENDS. FLOW THROUGH THE
LINES MAY BE BLOCKED OFF IF LINES ARE INADVERTENTLY INSTALLED WITH
THE DUST CAPS IN THE TUBE ENDS.
C.
Take extreme care to prevent foreign matter (lockwire, nuts, washers, dirt, etc.) from entering the
engine whether it is on or off the aircraft. Make use of protective caps, plugs, and covers to ensure
openings are not exposed.
D.
If anything is dropped into the engine, work should be stopped immediately and the item removed
even if considerable time and labor is required.
E.
Ensure all parts are thoroughly clean before assembling, especially during engine build-up.
F.
Never reuse any lockwire, lock washers, tablocks, tab washers, or cotter pins.
G.
All lockwire and cotter pins must fit snugly in holes drilled in specific hardware. On castellated nuts,
the cotter pin head must fit into a recess of the nut with the other end bent such that one leg is back
over the stud and the other is down flat against the nut. Use only corrosion resistant steel for cotter
pins or lockwire. Safety wire bushing plugs to the assembly boss or case - do not safety wire
bushing plugs to the bushing.
H.
Replace gaskets, packings, or rubber parts with parts at reassembly. Use the same type or
composition as that of the part that was removed.
I.
Make sure replacement nonmetallic parts show no sign of storage deterioration.
J.
Protect critical areas of engine parts (such as compressor and turbine disks) from scratches and
nicks by tools. Tool surfaces contacting these areas must be covered with a protective material.
CAUTION: BEFORE USING TOOLS ON THE ENGINE, ENSURE THAT SUFFICIENT
PROTECTIVE MATERIAL IS PRESENT TO PREVENT DAMAGE TO ENGINE PARTS.
K.
Use only a mallet of plastic or rawhide when installation of a part requires such force.
CAUTION: ENSURE THAT ANTI-SEIZE COMPOUNDS ARE APPLIED IN THIN EVEN COATS
AND THAT EXCESS COMPOUND IS COMPLETELY REMOVED TO AVOID
CONTAMINATION OF ADJACENT PARTS.
L.
Loose fitting spline drives external to the engine which have no means of lubrication should be
lubricated with an anti-seize lubricant such as molybdenum disulfide.
M. Do not leave adhesive tape or tape residue on engine parts. If adhesive tape has been applied to
any part, the tape must be removed and any adhesive residue completely removed with petroleum
solvent before being subjected to high temperature during engine run. Tape/adhesive residue can
cause surface attack and/or reduction in tensile ductility as temperature increases.
N.
Remove any corrosion-inhibiting compounds from all parts before reassembly. Ensure all traces of
such compounds and any accumulated foreign material have been thoroughly removed.
7D7
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
GENERAL
70-00-00
Apr 15/07
PAGE 1
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Table of Contents
Troubleshooting
