Component Tests and General Diagnostics

Testing Armature For Short-Circuit:

ARMATURE SHORT-CIRCUIT TEST
1. Place armature in a growler.
2. Hold a thin steel blade parallel and just above while rotating armature slowly in growler. A shorted armature will cause blade to vibrate and be attracted to the core. Replace shorted armature.

Testing Armature Coul For Grounding:

ARMATURE COIL GROUND TEST
Check the insulation between each commutator segment and armature coil core.
If there is no continuity, the insulation is in order.

Inspection Of Armature Coil Continuity:

ARMATURE COIL OPEN-CIRCUIT INSPECTION
Check the continuity between segments. If there is continuity, the coil is in order.

Installation Of Stop Ring & Snap Ring:

STOP RING & SNAP RING INSTALLATION
Using a suitable pulling tool, pull overrunning clutch stop ring over snap ring.