Rotor Check

Check the continuity between the slip rings of the field coil. If the resistance value is not within the standard value, replace the rotor.
Standard value: approximately 2 - 5 ohm

Fig 1: Checking Continuity Between Slip Rings Of Field Coil
Courtesy of DAIMLERCHRYSLER CORPORATION
Check the continuity between the slip ring and the core. If there is continuity, replace the rotor.

Fig 2: Checking Continuity Between Slip Ring And Core
Courtesy of DAIMLERCHRYSLER CORPORATION