Contact Points - Piper ARROW III Service Manual

No attempt should be made to stone or dress contact points. Should contact
assembly have bad points or show excessive wear, the complete contact
assembly should be replaced.
i. Check the condition of the cam follower felt. Squeeze felt tightly between thumb and forefinger. If
fingers are not moistened with oil, re-oil using 2 or 3 drops of Bendix 10-86527 lubricant. Allow
approximately 30 minutes for felt to absorb the oil. Blot off the excess with a clean cloth. Too much oil
may foul contact points and cause excessive burning.
j. Inspect the felt washer in the distributor block for oil content. If the felt is dry, inspect the bronze
bushing for wear. (Refer to manufacturer's overhaul instruction.) Oil felt washer with Bendix
Distributor Block Lubricant Part No. 10-391200. Blot excess oil from washer until flat surfaces take
on a "frosted" appearance and seat washer in its recess in block.
k. Check the capacitor mounting bracket for cracks or looseness. Using the Bendix 11-1767-1, -2 or -3
Condenser Tester or equivalent, check capacitor for capacitance, series resistance and leakage.
Capacitance shall be at least 0.30 microfarads. Series resistance should not be over 1 ohm at 500 kc.
1. Inspect coil leads for damaged insulation's and terminals for tightness and soldered connection.
m. Inspect impulse coupling parts for excessive wear. Particularly check clearance between cam and
flyweights of the cam assembly. Measure the clearance between the cam flyweights using the shank of
a new No. 18 drill (0.169 inch diameter). If the drill will fit between cam and flyweight as shown in
Figure 8-11, the cam assembly must be replaced. Check clearance between both flyweights and the
cam of each cam assembly.
Revised: 8/31/77
CHEROKEE ARROW III SERVICE MANUAL
Figure 8-10. Contact Points.
NOTE
POWER PLANT - CONTINENTAL
2B9