Piper PA-24 Comanche Service Manual page 384

PIPER COMANCHE SERVice MANUAL
FIGURE
7A·23.
REMOVING SEIZED SPARK
PLUGS
NOTE
Torque indicatiDl handle should not be used for spark plug removal
because of the greater torque requirement.
c.
Place spark plup in a aay that will identify their position in the engine as soon as they are
removed.
NOTE
Spark plup should not be used if they have been dropped.
d. Removal of sci&ed spark plup in the cylinder may be accomplished by application of liquid carbon
dioxide by
a Conical metal funnel adapter with a hole
at
the apex just
latJc
enough to accommodate the
funnel of a C02 beetle. (Refer to Figure 7A·23.) When a seiled spark plUJ 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 rele:uc the carbon
dioxid~
to chill and contract the spark plug. Break the
spark plug leese with a wrencn. A warm cylinder head at the time the carbon dioxide is applied will ald in
the removal of an excessively seized plu,.
.. Do not allow foreign objects to enter the spark plUJ hole.
POWER PLANT
ISSUED: 8/18/72
2
E4
•
•
•