Removal Of Spark Plugs - Piper Navajo Chieftain PA-31-350 Service Manual

234
Figure 8-36. Removing Frozen Spark Plug
TABLE VIII-III. COUPLING TORQUES
Spark Plug
Torque
Coupling Threads (lb.-in.)
5/8-24
90-95
3/4-20
110-120
8-79. SPARK PLUGS.
8-80. REMOVAL OF SPARK PLUGS.
a. Loosen the coupling nut on the harness lead and remove the terminal insulator from the spark
plug barrel well.
NOTE
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 centerline 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 collar.
Avoid undue distortion of the collar and possible side loading of
the barrel insulator.
Reissued: 9/23/80 POWER PLANT
NAVAJO CHIEFTAIN SERVICE MANUAL
2J7