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01-12-2017, 01:42 PM | #1 |
Senior Member
Join Date: Apr 2013
Location: Fairport, NY
Posts: 133
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Service Brake Cross Shaft Rebuild
I have just picked up my service brake cross shaft today from a friend's machine shop. He helped me by pressing out the lever arm pins, as drilling them out was not successful. The shaft section under the spherical bearing portion is noticeably worn. I believe that I read some where that the diameter of that shaft portion was supposed to be 13/16" (.8125"). QUESTION: Is there anyone known to you gentlemen who you would recommend that has the proven skill set to build the two shaft portions back up as well as turn them down to size?? Thank You in Advance!
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01-12-2017, 02:06 PM | #2 |
Senior Member
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Re: Service Brake Cross Shaft Rebuild
Another option is to use split bushings available from suppliers on a worn shaft. Very easy to install and work perfectly.. I have had them on my A for 15 years without incident.
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01-12-2017, 02:15 PM | #3 |
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Join Date: Apr 2016
Location: Lakeland, Fla
Posts: 49
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Re: Service Brake Cross Shaft Rebuild
I have purchased split bushings and have a question. Does one Dremel/cut off the old bushing? Would rather not remove the lever arm. Thanks, Rip
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01-12-2017, 02:19 PM | #4 |
Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,508
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Re: Service Brake Cross Shaft Rebuild
Please don't use split bushings. They are a band-aid at best.
Instead, just weld up the worn areas and re-machine them back to size. I/we do not worry with remembering the size. Just chuck the end that the arm was slid/pressed over into your lathe exposing .050"+/- of that unworn area to be used as your finished size guide. Then just machine the welded area until it is round. If by chance you have one or two small voids where the welding did not completely fill it, it is no big deal. Also, you will likely need to make a cup to slide over the opposite end with a 60 degree centering hole so you can use a live center. Remember that the cross shaft was bent after it was machined, so you really cannot use the original centering hole. |
01-12-2017, 02:31 PM | #5 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,741
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Re: Service Brake Cross Shaft Rebuild
The links show a couple of options for worn shaft. https://www.brattons.com/service-bra...-bushings.html
http://www.snydersantiqueauto.com/re...ke-cross-shaft Bob |
01-12-2017, 03:13 PM | #6 |
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Join Date: May 2010
Location: Lakeville, MN
Posts: 5,159
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Re: Service Brake Cross Shaft Rebuild
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Rusty Nelson |
01-12-2017, 03:49 PM | #7 |
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Join Date: Jan 2012
Posts: 241
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Re: Service Brake Cross Shaft Rebuild
I turned one side down that needed it and pressed on a sleeve. Worked good for me.
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01-12-2017, 04:01 PM | #8 | |
Senior Member
Join Date: Apr 2014
Posts: 709
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Re: Service Brake Cross Shaft Rebuild
Quote:
As the cross shaft hardly moves, the use of split bearings should not be an issue unless the shaft is very worn. I lucked out, mine was hardly worn. Anyone bother to fit grease nipples (sorry I do not like the word "zerk")? |
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01-12-2017, 04:04 PM | #9 |
Member
Join Date: Nov 2015
Location: Texarkana, TX
Posts: 61
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Re: Service Brake Cross Shaft Rebuild
I have used the split bushings and TIG welded them on. then just filed the high spots of the weld. Cannot tell the repair was done and structurally sound
GDG |
01-13-2017, 02:13 PM | #10 | |
Senior Member
Join Date: May 2010
Location: Lewisburg,PA
Posts: 938
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Re: Service Brake Cross Shaft Rebuild
Quote:
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01-13-2017, 05:10 PM | #11 |
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Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,127
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Re: Service Brake Cross Shaft Rebuild
I am with Ian, I like nipples also, no you dirty old guys, grease nipples :-)
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