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Farmall & IHC Tractors Discussion Forum
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Generator Overhaul Question

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jcronk

03-28-2016 16:17:11




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This is a Delco Remy generator off a 1945 McCormick Farmall H. It needs new bushing and bearing. Bushing is now out. What is the best method to separate the armature from the bearing? The woodruff key is out of the shaft now. A few pics for you.
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jcronk

03-29-2016 11:54:06




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
Here is the outcome for the drive end disassembly. Gaskets for both ends did not survive. This one is in two pieces and the other one is in multiple pieces. Cheers, Jack

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jcronk

03-29-2016 11:09:02




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
Thanks Jim. Now to see if a local supplier has stock. Would there be an identifier for the bushing or just take it along and hope. Best regards, Jack



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brownie450

03-29-2016 10:39:13




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
203PP Fafnir is brg. number.

3203 is also a good number.
Jim



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jcronk

03-29-2016 04:46:35




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
Worked like a charm Bob. Thanks. Would you have a bearing number?



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jcronk

03-28-2016 17:13:13




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
Thanks for that. I was a bit concerned about using a puller on the cast iron. I had threaded the castle nut onto the shaft (upside down) and thought about tapping but thought it might be best to ask first. I want to keep the tractor as original as I can so did not want to mess up something and then have to swap out the original generator. All the best to you, Jack



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Bob M

03-28-2016 17:27:26




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 17:13:13  
Jack - I've rebuilt several of those generators over the past several years. Just be very careful of the drive end casting. As you suspect it is somewhat brittle. Trick is to support the casting evenly all the way around while driving the armature shaft out.

One good way is to clamp the generator frame in a vise and set the armature/drive end casting assembly into it. The commence knocking the shaft out of the casting.

Good luck with yours!

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Bob M

03-28-2016 16:40:36




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 Re: Generator Overhaul Question in reply to jcronk, 03-28-2016 16:17:11  
Carefully support the front frame casting in a vice etc. with the armature hanging down. Thread the drive pulley nut loosely onto the shaft, then tap gently the end of the shaft with a brass hammer. The armature should slide out of the bearing. If it does not GENTLE heating of the shaft above the bearing can help loosen it.

Once the armature is out remove the 3 screws and the bearing retainer the frame casting. The old bearing should then drop right out.

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