Piper COMANCHE PA-24-180 Service Manual page 428

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c. Place spark plugs in a ray that will idenify
their posicon
in
the engine as soon as they are
removed.
NOTE
Spark plugs should not be used if they have been dropped.
PIPER COMANCHE SERVICE MANUAL
FIGURE 78-15. REMOVAL OF SEIZED SPARK PLUG
NOTE
Torque indicating handle should not be used for spark plug removal
because of the greater torque requirement.
d.
Removal of seized spark plugs in the cylinder may be accomplished by application of liquid carbon
dioxide by a Conical metal funnel adapter with a hole at the apex lust large enough to accommodate the
funnel of a COZ bottle. (Refer to Figure 7B-15 ) When a seized spark plug cannot be removed by normal
means. the funnel adapter is placed over and around the spark plug. Place the funnel of the C02 bottle
inside the funnel adapter and release the carbon dioxide to chill and contract the spark plug Break the
spark plug loose with a wrench A warm cylinder head ar the tune the carbon dioxide is applied will aid in
the removal of an excessively seized plug
e. Do not allow foreign objects to enter the spark plug hole.
POWER PLANT
ISSUED: 8/18/72
2F22