planecrazy

Look for re-builder that has a Generator test bench and knows how to use it. I think the old "Motors Manuals" has the generator output specs and RPM listed in them. The test should not take more than a few minutes. I would not invest in a bearing and brush kit until I know this. If the output is found to be low you could have a open armature winding or some degree of shorted field winding's. Then the rebuild is necessary. The battery load test was always the first test we did in the shop back in the day, the generator/regulator bench test the second, if no joy found there then the wiring/grounding trouble shooting began. The things listed above like loose or bad belts was quickly checked when we opened the hood to do the battery load and charging system test and could quickly be eliminated. Best of luck Bill