Piper PA-24 Comanche Service Manual page 471

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PIPER COMANCHE SERVICE MANUAL
FIGURE 7C·18. REMOVING FROZEN SPARK PLUG
NOTE
Torque indican." handle should nee be: used for spark plug removal
because: of the areate:t torque requirement.
c. Place spark plup
in
a tray that will identify their pOliti;)n in the engine
15
soon .u they are
removed.
NOTE
Spark plugs should not be used if they have been dropped.
d. Removal of seized spark plup in the cylinder may be accomplished by application
ot
liquid carbon
dioxide
by a Conical metal funnel adapter with a bole
at
the apex just lute enough to accommodate the
funnel of a C02 bottle. (Refer to Figure 7C·16.) When a seized spark plug cannot be: removed by normal
mc:u1s. the funnel adapter is placed over and around the spark plug. Place the funnel
of
the C02 bottle
rnside
the funnel adapter and release the carbon dioxide to chill and contract the spark plug. Break the
spuk ?Iug loose
With
a wrench. A wa.rm cylinder head
at the time the cuban dioxide is
ap~lied
Will
J.id
In
the removal of an
exeesswelv
seized plug.
c. Do not allow foreign objects to enter the spark plug hole.
POWER PLANT
ISSUED: 8/18172
2
H19