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Generator Overhaul Question

J

jcronk

Member
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.

34492.jpg
34493.jpg
34494.jpg
 
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.
 
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
 
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!
 
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
 
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

34524.jpg


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