Farmall B Starter Rebuild

redgreen93 · Sep 12, 2022

Working on a full rebuild of my Delco 1107021 starter beginning with replacing the shorted field coils. Ordered in replacement but they are 2 "sets" of coils (4 coils total) like what you find on an H or M. I understand the pole shoes are in the housing and could use all 4 coils, but do not see how they can fit with the starter lug directly in the way of one of them. Do I just need to separate the new coils and use just 2 like there was originally?

gene bender · Sep 13, 2022

better do it rite or the starter will run backward

teddy52food · Sep 13, 2022

Get the right set of coils.

redgreen93 · Sep 13, 2022

Thats the issue, these came from farmtractorrepair (J&D productions) and they are telling me they are correct:

"Yes, in some applications you'll only need two field coils instead of all four. It sounds like that may be the situation you are in. "

As someone mentioned above my concern would be the resistance not being correct by simply separating them.

redgreen93 · Sep 13, 2022

Gene,

For my knowledge, are you referring to the pole shoe orientation/location, or something else to look for?

Fritz Maurer · Sep 13, 2022

Can you install the pole shoe right now, with the
field against the post, or is the bolt hole way off? If
the pole shoes and end caps fit, put a nut on the
contact post that has a smaller hex... then maybe
there will be room to put a cardboard tube over it for
extra insulation. But if not, send it back and try
another supplier. I think cutting out two fields just to
make the wrong parts fit is a terrible idea.
Before you go to too much trouble to make that
assembly fit, make sure that they are wound in the
same direction as the fields you took out. The fields
are changed when they change the rotation of a
starter for a different application.

dewy · Sep 13, 2022

can u move the coil with short lead to the left,an then cut the coil with long lead to fit....cant see all of pic....

redgreen93 · Sep 13, 2022

(quoted from post at 18:42:21 09/13/22) Can you install the pole shoe right now, with the
field against the post, or is the bolt hole way off? If
the pole shoes and end caps fit, put a nut on the
contact post that has a smaller hex... then maybe
there will be room to put a cardboard tube over it for
extra insulation. But if not, send it back and try
another supplier. I think cutting out two fields just to
make the wrong parts fit is a terrible idea.
Before you go to too much trouble to make that
assembly fit, make sure that they are wound in the
same direction as the fields you took out. The fields
are changed when they change the rotation of a
starter for a different application.

The hole is way off as you mentioned. Definitely going to complain a little louder and see if they will do the right thing on a return/refund as there seems to be no way to even hack it up and make it fit well.

used red MN · Sep 14, 2022

I think Gene is just telling you to look for the proper
field coils that are made as a pair not try to make
something fit that has every indication that it is not
correct. I believe he is correct that if the coils are
wound wrong it may run backwards even if it appears
they are connected in relation to the brushes as it was
originally.

Farmall B Starter Rebuild

redgreen93

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gene bender

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teddy52food

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redgreen93

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redgreen93

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Fritz Maurer

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dewy

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redgreen93

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used red MN

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