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WD motor and starter

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Allis Grader Guy View Drop Down
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Joined: 17 Aug 2024
Location: Denver, CO
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Grader Guy Quote  Post ReplyReply Direct Link To This Post Topic: WD motor and starter
    Posted: 10 Jun 2026 at 5:39pm
I have a A-C Model D grader with a WD engine. The starter will occasionally make just a single click sound when I push it. Not a click, click, click when a low battery. When I tap the starter with a hammer it works fine. Steiner has parts for it: Model #: 1107962. 

They have: Starter Drive (Bendix), Starter Drive Assembly that includes the Armature, Starter Drive Spring only, and the Starter Brush and Bushing kit.  

Anyone know which it most likely needs, or should I go with the Starter Drive Assembly Kit and Brush & Bushing Kit to get everything covered, or what if anything the problem may be caused by?

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8070nc View Drop Down
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Joined: 21 Mar 2019
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2026 at 5:57pm
My eperience is you have a brush sticking if yiu can tap it and it wirks after that
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Joined: 21 Mar 2019
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2026 at 5:59pm
I cant seem to train my finger to move over enough to hit the o instead of the i
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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steve(ill) View Drop Down
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Location: illinois
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jun 2026 at 7:52pm
you might just take the starter apart... clean the brushes and commutator... and clean the crud off the bendex and lube so it slides good..
Like them all, but love the "B"s.
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SteveM C/IL View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 2026 at 2:42pm
Cleanup would be good but I've heard here that there could be grounding issues where the nose fits and bolt locks it.
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Allis Grader Guy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Grader Guy Quote  Post ReplyReply Direct Link To This Post Posted: 22 Aug 2026 at 7:00pm
I removed the starter and took it to a starter/generator shop that still exists in Denver, CO. He said that in the 50's and 60's in Denver there were 43 shops that specialized in them. Today, there are two! 

As proposed, the brushes were seriously worn and he said he was afraid to see the armature as he expected it to be damaged. Luckily, no damage.

The real problem though was the main electrical post on the starter. Inside, there is a plastic holder for the wires that go to the rest of the starter. That plastic piece was melted and therefore was poor electrical contact with weak starting. Probably too many 12 volts going to it over the years.

Got it back and now it starts strongly and not even tempted to give it a shot of starter fluid as I had to before. Starts right up.  
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Ray54 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray54 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Aug 2026 at 5:28pm
Originally posted by Allis Grader Guy Allis Grader Guy wrote:

I removed the starter and took it to a starter/generator shop that still exists in Denver, CO. He said that in the 50's and 60's in Denver there were 43 shops that specialized in them.  Wink  At this point I figured your were going to say this is the last shop and he was retiring next week.               

 Today, there are two! 

 
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