Generator armature end play

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Model T Ford Forum: Forum 2017: Generator armature end play
Top of pagePrevious messageNext messageBottom of page Link to this message  By Dave Eddie on Wednesday, November 15, 2017 - 11:33 pm:

How much end play should the armature have


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tony Bowker, Ramona, CA on Thursday, November 16, 2017 - 12:18 am:

I donít know the specification but end play must be limited to keep the brushes on the commutator at all axial positions. Based on generators I have worked on I would guess up to 0.030Ē would acceptable.


Top of pagePrevious messageNext messageBottom of page Link to this message  By James A Bartsch on Thursday, November 16, 2017 - 05:24 pm:

I have successfully used a finger spring washer in the brush cap end bearing. McMaster-Carr p/n 9717k65 takes up the endplay, and gently preloads the armature assembly without needing shims. jb


Top of pagePrevious messageNext messageBottom of page Link to this message  By Brad Marble on Friday, November 17, 2017 - 08:48 am:

When I rebuild a model T generator I install new sealed bearings and I locktight the front bearing in the end bell with the bearing inserted all the way into the bore. This eliminates any end play and allows the rear bearing to travel in the rear endbell to adjust for thermal expansion and contraction.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Joseph A. Stearns on Friday, November 17, 2017 - 09:38 am:

James A Bartsch
I attempted to look up the spring washer McMaster Carr p/n 9717k65 you mentioned but found nothing under that number. Is it possible that there is a different number? Thx


Top of pagePrevious messageNext messageBottom of page Link to this message  By Duey_C on Friday, November 17, 2017 - 05:46 pm:

It is a valid McMaster-Carr number. I couldn't find it either tho.
Went a different route and bingo. I think. :-)
Try this page
https://www.mcmaster.com/#catalog/123/1298/=1aastcb
Does this work? Scroll down just a little bit.
:-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By James A Bartsch on Friday, November 17, 2017 - 06:29 pm:

Joseph, sorry I was too brief, Duey has it, when I enter the p/n in the MMC page Duey referenced, the part info and a pic comes up. These are sold in a 10 pack for about $11. I wish our usual vendors carried these in addition to all the excellent generator parts they already stock. best to all, jb


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