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Discussion Forum

Allis Chalmers WD45 clutch pins

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01-23-2001 10:54:01

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The large pins on which the hand and foot clutches pivot are badly worn on my WD45. Last night I took off the hand clutch and tried to remove the pin with a pipe wrench and lots of additional leverage. The pin would not budge.
Does anyone have any ideas of how to get it out so I can replace it or rebuild it? Thanks

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01-25-2001 09:56:23

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 Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 10:54:01  
What we did was make a bushing the length of the pin out of steel. As I recall was the id was 5/8, by making it the full length of the pin the bushing sets on the unworn section of the pin, cross drill the bushing to match existing cotter pin hole (this retains the handle and keeps the bushing from rotating when cotter pin is installed). As far as the handle we reamed the hole out to 1" and made the bushing OD 1". As far as assembly , put handle on grease up bushing, slide bushing in , install 1"washer and cotter pin. This worked ok for us but, I wished I had better tolerances on the machining( tighter fit - less slop)

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01-24-2001 08:27:26

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 Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 10:54:01  
Last night I talked to a former Wd45 mechanic. He did not have good news on how to get the pin out. It is not threaded and is just pressed into the tractor. He said the only way to get it out is to break the tractor in half or take off the channel iron on the side. Either proposition will take some time. Since the pin is worn on the top and side I think it can be built-up on the tractor. At least I am going to try that approach.
Hey, many thanks for all of your comments and suggestions. Farrell

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01-23-2001 17:53:07

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 Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 10:54:01  
My parts book shows the pin for the hand clutch along with all the other linkage for the clutch. It doesn't appear to have any threads. How about drilling and tapping it and using a deep socket or a piece of pipe and a capscrew as a puller. Or cutting it off and drilling it out. Another would have to pr pressed, or carefully hammered in. Maybe a large C clamp would do it, especially with a few taps from a hammer to help it along. I will be doing this sort of repair to the wd I am working on sometime in the future so I will be interested to know how you make out. The pivot for the foot clutch is the shaft that the brakes are part of. It could be replaced if the tapered holes are placed in the new shaft in the right place. These holes act as keyseats for the tapered setscrews that key the pedals and levers to the shaft for the left brake. Good luck and let me know how you do.

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David Thomas

01-23-2001 11:11:35

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 Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 10:54:01  
As I recall, there are bushings in the arms that fits over the pins in question. That's probably what has worn and should be easy to drive out and replace.

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01-23-2001 14:26:50

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 Re: Re: Allis Chalmers WD45 clutch pins in reply to David Thomas, 01-23-2001 11:11:35  
The bushings are slightly worn but the pins are really worn. I am wondering if they were pressed or if they are threaded and if it is possible to remove them after all these years.

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01-27-2001 09:59:24

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 Re: Re: Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 14:26:50  
Replaced the hand clutch pin on my WD about 8 years ago. Had the tractor split for some other work. I used an air hammer from the inside while someone twisted the pin with a pipe wrench. I think you have to split it and remove the hand clutch to get at it with the air hammer. Doesn't take long to split a WD.

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Roscoe Farrell

01-23-2001 17:52:49

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 Re: Re: Re: Allis Chalmers WD45 clutch pins in reply to Farrell, 01-23-2001 14:26:50  
There may be a set screw inside the wet clutch housing.This pin should come loose without alot of trouble.

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