Piper SARATOGA PA-32-301 Maintenance Manual page 512

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
8. Check the capacitors for looseness in the magneto cover of the harness assembly and for any physical
damage. Using a Bendix 1I - 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.
9. Check magneto to engine timing per instructions given in the following paragraph.
10. 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. remov e the
magneto for overhaul.
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 availablefrom theBendix
Corporation at Sidney, New York 13838.
1. Remove the spark plug from the No. I cylinder and turn the crankshaft in the direction of normal
rotation until the compression stroke is reached.
2. 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 74-3 )
3. 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 74-4.)
- NOTE-
It is recommended that short adapter leads befabricated tofacilitate
connecting the timing light unit to the switch outlet terminals of the
cover. (Refer to Figure 74-4.)
4. The magneto incorporates a built-in pointer and a degree wheel with sufficient reference to assist the
mechanic in magneto timing procedures. Printed upon the rotating magnet are marks to indicate magneto
neutral and magneto "E"gap (8
°
). (Refer to Figure 74-5.) Also included are retard angle references of 10. 15. 20
and 25 degrees. These marks are set up for either clockwise (R) or counterclockwise (L) rotation of the
magneto as viewed from the magneto drive end. The timing tooth of each large distributor gear is marked with
red paint. (Refer to Figure 74-6.)
74-10-03
Page 74-05
Issued: January 2. 1980
2K5