Generator Inspection: Rotor

Using ohmmeter (1), check for continuity between slip rings (2) of rotor. If there is no continuity, replace rotor.
Standard resistance between slip rings of rotor

2.5 - 3.0 Ω

Fig 1: Checking Resistance Between Slip Rings Of Rotor
Courtesy of SUZUKI OF AMERICA CORP.
Using ohmmeter (1), check that there is no continuity between slip ring (2) and rotor core (3). If there is continuity, replace rotor.

Fig 2: Checking Continuity Between Slip Ring And Rotor Core
Courtesy of SUZUKI OF AMERICA CORP.
Check slip rings and rotor fan surface for roughness or scoring. If they are rough or scored, replace rotor.