Piper Dakota Maintenance Manual page 456

STANDARD PRACTICES - ENGINE
To ensure proper installation or assembly, tag or mark all parts
as to location before removal or disassembly.
All parts removed from engine must be inspected for burning or
scoring before installation.
Be very careful to prevent foreign matter from entering the
engine. Cover all openings and intakes with suitable plugs.
If any item is dropped into engine, process must stop until item is
removed. Ensure all parts are clean before assembly.
Never reuse any lock wire, lockwashers, tab locks, tab watchers,
or cotter pins.
Replace all gaskets, packing, and rubber parts at reassembly.
Ensure all metallic parts show no sign of deterioration from
storage.
Dust caps used to protect open lines must always be installed over
tube ends and not in tube ends. Flow through lines may be
blocked off if lines are inadvertently installed with dust caps in
tube ends.
Anti-seize lubrication should be applied to all loose-fit spline
drives which are external to the engine and have no other means
of lubrication. For certain assembly procedures, molybdenum
disulfide in either paste or powdered form mixed with engine oil
or grease may be used.
Ensure that anti-seize compounds are applied in thin even coats,
and that excess compound is completely removed to avoid
contamination of adjacent parts.
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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2H12
70 - 00 - 00
Page - 70-01
Reissued: August 1, 1986