Inspection

BEARINGS
Check the bearing for seizure, wear, noise or improper rotation. Before checking for noise or improper rotation, apply ATF and spin.

SLIP RINGS
Wipe foreign particles (such as sand, dust, oil, etc.) off the slip ring using a volatile oil (thinner, trichloroethylene, etc.) and check the slip ring for damage.

Slip Ring Continuity Check:

Continuity check - Measure resistance between the slip rings using a circuit tester. If it is in the 2 to 4 ohms range, the slip rings are functioning properly. If continuity does not exist or resistance is extremely low, replace the driven member.

Insulation Check:

Insulation check - Check insulation resistance between each slip ring and aluminum bracket of the electromagnetic powder clutch using a circuit tester (set in the max. ohm range). If continuity exists, replace the electromagnetic powder clutch. Do not attach the test probes to the slip ring as this may scratch it.