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1972 Cub Cadet 129 Drive shaft pin shear


jfh's Avatar
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04-17-07, 08:58 PM   #1  
1972 Cub Cadet 129 Drive shaft pin shear

My 1972 Cub Cadet 129 would not go into motion after I stopped mowing for a moment.
I noticed the shaft connected at the rear of the engine where it fits into a collar just spins as I can see a pin sheared. This shaft seems to run to the rear end.
Is that a threaded bolt or what type of a pin woud it be.
I didn't want to try removal of the pin until I know.
Any help is appreciated.

Thanks
Joe

 
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04-17-07, 09:05 PM   #2  
Hi Joe,

I'm not sure what type of pin is there, but I think I have one like yours at the shop. I'll try to remember to have a look at it tomorrow and see what's there. Probably a roll pin or a solid type shear pin.


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04-17-07, 09:16 PM   #3  
1972 Cub Cadet 129 would not go into motion

Thanks Cheese for the response

I tried to continue mowing but the engine revved and no movement forward or backward.
When I opened the hood I saw a shiny spot on the shaft which is inside the collar on the rear of the engine. I reached in and was able to turn the shaft so I guessed that the pin sheared and if I can replace it, my problem may be solved.
I just didn't want to drive the remainder of the bolt or pin out until I know what is in the shaft.
I also wanted to know if it is a special pin that I will need to replace it.

I really thank you much for any help

Joe

 
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04-18-07, 02:17 AM   #4  
I believe that this is a 1/4" X 1 1/2" roll (spring) pin.

 
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04-18-07, 12:11 PM   #5  
1972 Cub Cadet 129 Drive shaft pin shear

Thanks to both of you: Cheese and Puey61

I purchased a solid pin to install and a spring roll pin for a spare.

I see the one that broke was a spring roll.

I installed the solid shaft pin and put a hose clamp around it so as not to have it fly out or..

I want to thank you guys for the help

Joe

 
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04-19-07, 03:32 AM   #6  
You're welcome, JFH, and furthermore, if the solid pin is not a tapered pin then you should use the roll pin. A straight, solid pin is likely to have less than desireable tolerances and will likely have slop and then create more trouble for yourself.

 
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