Piper Pawnee Brave Service Manual page 229

PAWNEE BRAVE SERVICE MANUAL
d.
Place the magneto switch in its "ON" position and actuate the starter switch. At the same time
observe the No. 1 cylinder spark plug lead which is fired by the left magneto circuit. A series of sparks
should be seen when holding the lead approximately .19 of an inch from engine ground.
WARNING
Grasp the spark plug lead far enough away from the connection so
as not to produce any dangerous electrical shock.
e.
If the spark does not jump the gap, check the applied voltage to the starting vibrator. This voltage
should be 24 volts.
f.
If voltage is correct, check the contact points of the magneto. Both sets of contact points must
be opened.
g.
Reject all units not complying with the preceding requirements or which show any visual defects.
8-89. REMOVAL OF STARTING VIBRATOR.
a.
The starter vibrator is mounted on the lower right side of the fire wall in the compartment just
aft of the fire wall.
b.
To gain access to the starter vibrator, unlatch the access door on the right side of the fuselage just
aft of the fire wall.
c.
Disconnect the electrical leads from the vibrator.
d.
Remove the vibrator from the bulkhead by removing the attachment screws.
8-90. INSTALLATION OF STARTING VIBRATOR.
a.
Position the vibrator on the fire wall and secure with attachment screws.
b.
Connect the electrical leads to the vibrator.
c.
Check the operation per Paragraph 8-88.
d.
Secure the access door.
8-91. EXTREME WEATHER MAINTENANCE. (Refer to Engine Manufacturer's Operating Manual for
operation in abnormal environmental conditions.)
POWER PLANT - CONTINENTAL
Revised: 8/31/76
1J20