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Re: Help - 39 RTS Transmission Issues

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Author  [Modern View]

10-17-2013 10:08:17

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I had a similar problem on my 1940 RTS. I pulled the transmission cover and discovered that the shift rails were shot, very heavily rusted. I think the culprit was years and years of sitting in the Canadian elements without a gear shift boot.

I installed a set of really nice used shift rails and it shifts like a new one now. Taking the cover off was a good idea anyway, as the tranny needed alot of flushing and cleaning to get the old sludge out.

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10-17-2013 10:32:40

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 Re: Help - 39 RTS Transmission Issues in reply to Heath72, 10-17-2013 10:08:17  
I was kind of afraid I was going to have to pull tank etc and trans cover. Where did you find rails?

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10-17-2013 11:03:55

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 Re: Help - 39 RTS Transmission Issues in reply to MMEd, 10-17-2013 10:32:40  

It's not really a bad job. You can have it all apart in about an hour. I happened to find a very nice set of shift rails on ebay for like $25.00, so I got lucky there. You can see the old rusty ones on the left...the replacements are on the right, what a difference.

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Tim Yates

10-18-2013 09:36:21

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 Re: Help - 39 RTS Transmission Issues in reply to Heath72, 10-17-2013 11:03:55  
You can see where the round balls ride on the center shaft . These grooves are the areas to weld up and grind back down smooth with a flap wheel on a grinder. Fixing the notches will help eliminate jumping out of gear when under load. There are several Moline salvage yards that can help as well. Jeff Gravertt, in Nebraska. Wendell Everett in Ohio, Welters in Missouri I think.

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10-17-2013 13:05:09

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 Re: Help - 39 RTS Transmission Issues in reply to Heath72, 10-17-2013 11:03:55  
Thanks for the pictures - I'm thinking my problem must be wear at the top fork on rear of center rail under shift lever - somehow the center shaft has jammed into the guide so that it can not move either forward or aft unless I get lucky - once in a blue moon. Most likely I need the center rod and / or the guide. Guess I'll have to take top off to figure it out.

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clyde in colo

10-23-2013 12:12:28

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 Re: Help - 39 RTS Transmission Issues in reply to MMEd, 10-17-2013 13:05:09

This guy has 3 listings.......depending opn which rail you want.

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11-03-2013 04:50:46

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 Re: Help - 39 RTS Transmission Issues in reply to clyde in colo, 10-23-2013 12:12:28  
Thanks - I bought all 3 rails. But they are significantly worn. When I got trans apart, only need 2nd / Reverse rail - it was rusted solid to ball and rear guide. Other 2 are in much better shape wear wise than the ones I bought. Guess I"ll put it back together with used rail and see how it shifts - and keep looking for a better 2nd/R rail. Based on wear possible issue would seem to be popping out of gear.

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