Generator question

[ndnchf]

There is only one correct way to wire the fields. Over the period of model A production. They grounded fields 3 different ways. How are yours grounded? What is the resistance through both fields? It should be .9 - 1.0 ohms. Did you check the armature for opens, shorts and grounds? Any one of these 3 can cause problems. Did you sand in the brushes for full contact? Lastly, are you certain the cutout is working properly?

[katy]

Thanks for the replies,

Originally Posted by ndnchf

There is only one correct way to wire the fields. Over the period of model A production. They grounded fields 3 different ways. How are yours grounded? What is the resistance through both fields? It should be .9 - 1.0 ohms. Did you check the armature for opens, shorts and grounds? Any one of these 3 can cause problems. Did you sand in the brushes for full contact? Lastly, are you certain the cutout is working properly?

Field coils are grounded with one wire coming outside the case to ground.
Field resistance is ~ 1 ohm
Armature was checked for opens: none, shorts: none, ground:, none.
Brushes are making full contact.
Diode cutout tests good, No output from generator at cutout input.

Marshall, third brush was set half way, at that setting generator output shows 0 volts, I'll try full down and see what happens.