ADJUST ARMATURE TIMING

TM 5-4240-501-14P IGNITION Flywheel Type - External Breaker Fig. 32 - Armature Air Gap ADJUST ARMATURE TIMING Model Series 19D, 23D Fig. 33 - Model Series 19D, 23D Remove Flywheel Use puller 19203 or 19068, running puller screws into holes tapped into flywheel. Continue to tighten screws until flywheel loosens, Fig. 30. NOTE : Use flywheel nut to protect crankshaft threads. Set points at .020" (0.51 mm) gap. Position flywheel on crankshaft taper. Flywheel key screw should be finger tight. Flywheel nut may be put on loosely, Fig. 33. Fig. 34 - Flywheel Key Rotate flywheel clockwise until breaker points are just opening (flywheel key drives crankshaft while doing this). Fig. 35. Use a timing light. Fig. 35 - Flywheel Timing Rotate flywheel slightly, counterclockwise, until edge of armature lines up with edge of flywheel insert, Fig. 36. (Crankshaft must not turn while doing this.) Tighten key screw. Tighten flywheel nut. See Table 1. Set armature air gap at .022"-.026" (0.56-0.66 mm). Fig. 36 - Flywheel Timing 2 10