Re: EARLY 9N GENERATOR BRUSHES

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Posted by Tim Daley(MI) on December 11, 2018 at 13:03:38 [URL] [DELETE] :

In Reply to: Re: EARLY 9N GENERATOR BRUSHES posted by Doug Siperly on December 11, 2018 at 10:58:15:

Doug-
Dont worry about the markings so much, it is the design of each brush and its application that are important. Here are the two brushes used in both the early 9N-A and 9N-B generators. They are both marked MP35 because they are the SAME brush/wafer. It is the tabs which are different. Even the wire appears to be the same. The wafers measure .60 - .62 square x .2 thick. I dont know why the later larger 40-10069 brushes are also marked MP35. The 9N Brushes were ONLY used on those specific generators. They were not ever used on anything else. The generators and their brushes were specific to the 9N tractor, hence the 9N prefix. A part prefix denoted what module the part was first used on. When Ford released the 9N-10000-C generator, it was now a larger barrel, a larger armature, output rated at 11.5 amps, and thus required larger brushes. The 9N-C used two brushes already in the system. The 40-10069 was used for the two fixed brushes, and the 40-10070 was used for the single adjustable 3rd brush. Here are the two early 9N generator brushes:


Tim Daley(MI)


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