Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
g. Check condition of cam follower felts for proper lubrication. If oil has migrated from one follower
felt to another, it may be necessary to remove the lubrication from one felt strip while oiling
another. If felt is over lubricated, remove oil by using a clean, lintless cloth. If dry, apply one or two
drops of Bendix Breaker Felt Lubricant 10-86527.
h. Check the capacitors for looseness in the magneto cover of the harness assembly and for any
physical damage. Using a Bendix 11-1767-1, -2 or -3 condenser tester or equivalent, check
capacitors for capacitance, series resistance and leakage. Capacitance shall be 0.34 to 0.41
microfarads.
i. Check magneto to engine timing per instructions given in Paragraph 7A-39.
j. Check action of impulse coupling. With the ignition switch off, observe breaker cam end of rotor
while manually cranking the engine through a firing sequence. The rotor should alternately stop and
then (with an audible snap) be rotated rapidly through a retard firing position. If impulse action is
not correct, remove the magneto for overhaul.
7A-39. MAGNETO INSTALLATION AND TIMING PROCEDURE (Timing Magneto to Engine).
WARNING: DO NOT ATTACH HARNESS SPARK PLUG ENDS TO THE SPARK PLUGS UNTIL
ALL MAGNETO TO ENGINE TIMING PROCEDURES AND MAGNETO TO SWITCH
CONNECTIONS ARE ENTIRELY COMPLETED.
NOTE: The use of a timing light unit Part No. 11-9110 or 11-9110-1 will simplify the timing procedure.
This unit is available from the Bendix Corporation at Sidney, New York 13838.
NOTE: Verify correct engine timing for the airplane being worked on by checking the engine dataplate.
a. Remove the spark plug from the No. 1 cylinder and turn the crankshaft in the direction of normal
rotation until the compression stroke is reached.
b. Continue turning the crankshaft until the 20 advance timing mark is in alignment with the small
hole located on the top face of the starter housing at the two o’clock position. (Refer to Figure 7A-
13.)
c. The D-2000 series magneto may be mounted to the engine without removing the cover from the
magneto. The cover also has switch terminal outlets for the right and left sides of the magneto,
located in the center of the harness lead outlet section of the cover. (Refer to Figure 7A-29.)
NOTE: It is recommended that short adapter leads be fabricated to facilitate connecting the timing
light unit to the switch outlet terminals of the cover. (Refer to Figure 7A-29.)
VIIA - POWER PLANT 07/15/06
(PA-32-300/32R-300)
2H14