Piper Arrow IV Turbo Maintenance Manual page 650

SPARK PLUGS.
REMOVAL OF SPARK PLUGS.
1. Loosen the coupling nut on the harness lead and remove the terminal insulator from the spark plug
barrel well.
When withdrawing the ignition cable lead connection from the
plug, care must be taken to pull the lead straight out and in line
with the center line of the plug barrel; otherwise a side load will
be applied, which frequently results in damage to the barrel
insulator and connector. If the lead cannot be removed easily in
this manner, the resisting contact between the neoprene collar
and the barrel insulator will be broken by a rotary twisting of the
c o l l a r. Avoid undue distortion of the collar and possible side
loading of the barrel insulator.
Effectivity
PA-28RT-201
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Figure 74-44. Removing Spark Plug Frozen to Bushing
—NOTE—
3E22
74-22-01
Page 74-37
December 1, 1978