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Allis Chalmers Discussion Forum
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WD45 transmission locking-up

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mkgreenbay

02-18-2006 15:49:11




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While plowing snow my 1952 WD45 has locked-up in reverse one time and again yesterday in third gear. The shifter is curved. The first time it locked-up I took the cover off and looked it over, I ended up putting it back together, I did notice that someone else taken it apart before me, the safety wiring on the setscrews looked cobbled. Yesterday I took the shifter off and with a screwdriver moved the linkage inside the case, reenserted the shifter and got it to work. When I am changing gears I am not ramming it in to gear. I need some information as to what to look for-worn parts, missing parts, adjustments, etc. My IT manual does not cover this very well

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Rob WIS

02-21-2006 04:29:26




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 Re: WD45 transmission locking-up in reply to mkgreenbay, 02-18-2006 15:49:11  
Brian G.NY explained it very good.I have fixed
my tractors by doing that over the years and it solved the problem. I Know it will fix yours.



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Danny Missouri

02-19-2006 18:53:28




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 Re: WD45 transmission locking-up in reply to mkgreenbay, 02-18-2006 15:49:11  
Mine gives me more trouble when it gets cold. Detent balls and springs don't slide back shifter gets in between.



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Brian G. NY

02-19-2006 07:06:53




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 Re: WD45 transmission locking-up in reply to mkgreenbay, 02-18-2006 15:49:11  
The two most common causes are #1: worn pivot pins in the tower which allows the shifter to turn and #2: a worn tip on the shifter; not necessarily in that order. I drilled the holes in the tower to 5/16", cut off a couple of Gr 8 5/16" bolts and ground the heads to fit "nicely" into the shifter grooves. The "curved" nature of the shifter puts a strain on these pins and causes them to wear much faster than even the single pivot pin on the WD's straight shifter lever. I then built up the end of the shifter with weld and ground it until it fit "nicely" into the slots in the shifter forks. I used the old "cut and try" method which takes a little time but is worth the effort.
These two things help to prevent the shifter from
slipping thru two shifter slots at the same time.
The shifter forks on one of my 45s was so worn that I really couldn't get it to work right so I had to use another tower off a parts tractor and rework that one to get it to shift properly. I had to do the same thing to the straight shifter on my WD but it has only one pivot pin instead of two. You can spend the money for a new shifter as well but I think they're a little pricey and if the holes in the tower are worn excessively (which they normally are), there are oversize pins available too.

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BCnT

02-18-2006 19:09:43




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 Re: WD45 transmission locking-up in reply to mkgreenbay, 02-18-2006 15:49:11  
i'm sure there is some wear but i wonder if the cold weather is amplifying the problem...mite try running lighter oil in tranny when its cold...lots of folks use atf in gear boxes these days.



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Glenn F.

02-18-2006 18:54:21




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 Re: WD45 transmission locking-up in reply to mkgreenbay, 02-18-2006 15:49:11  
MK: I can't speak to your transmission problem, but I'm courious as to your location. I live in west DePere, WI. Where do you live? Glenn F.



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glenn F.

02-19-2006 08:09:04




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 Re: WD45 transmission locking-up in reply to Glenn F., 02-18-2006 18:54:21  
Glenn F. I live in the Town of Hobart on corner of Overland Road and County Hwy VV. My name is Mike Kaari 865-7730



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Glenn F.

02-19-2006 09:11:43




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 Re: WD45 transmission locking-up in reply to glenn F., 02-19-2006 08:09:04  
That's north Overland,right? I live in Hobart too, just off of south Overland, 2 miles south of Hwy 172. I collect CASE tractors. Glenn F.



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