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Snow Plow Maintenance


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#16 David Brown OFFLINE  

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Posted February 04, 2013 - 10:05 PM

I guess that is why! I thought that the pin would be a little over 3/16 and made to fit a 3/16 hole. How much smaller should the hole be? I would think a 1/4 pin is to big to fit the 3/16 hole?

Not real sure to be honest.  Probably not more than 1/32 inch and that may be too much.



#17 Ryan313 OFFLINE  

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Posted February 04, 2013 - 10:11 PM

Not real sure to be honest. Probably not more than 1/32 inch and that may be too much.


Hopefully somebody will come along who knows more about it.

#18 MH81 ONLINE  

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Posted February 04, 2013 - 10:12 PM

I would get a 1/4" pin and a drill guide.  you want it to be one size smaller than you think it should be.  1/32" sounds right or close.  If you're worried at that diameter, you can still put on the threadlocker.

 

They do make a 7/32" roll pin... http://www.engineers...om/roll_pin.htm

 

Might try one with your existing hole.


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#19 icpik OFFLINE  

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Posted February 05, 2013 - 10:09 AM

You may have a little run out on your drill press. If so, the drilled hole will be slightly larger than 3/16, which will make for a loose fit.  However, can't you use a punch or thin screwdriver and open the ends of the pin slightly?

 

Don Hayes



#20 Ryan313 OFFLINE  

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Posted February 05, 2013 - 10:45 AM

That's a good idea, I will try stretching the pin slightly.

#21 JRJ OFFLINE  

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Posted February 05, 2013 - 05:23 PM

I am sure glad my blades just has a drop in pin to change the angles, and not like you have.My also has some slop in it due to age and wear and tear.

Good luck with the project Ryan, isn't it funny how these thought to be simple project turn into a large one.

Dick



#22 Ryan313 OFFLINE  

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Posted February 05, 2013 - 09:01 PM

I took the plow off today, and I found out what the real problem was! It does not make any sense to me, as that part of the pin only has pressure on it when it is pulled to turn the blade.
B64C2008-54CF-4405-9C19-A5CA51912104-577

 

My theory as to why it was fine when I parked it, and broke after it sat in the garage is that water got into a crack there, froze and split it apart. As it thawed out the water got deeper, and froze again... making the crack bigger until it broke. On the broken part of the pin you can see the different colors from cracks that formed at different times. I am not sure how it cracked the first time though; like I said, all pressure is forward that part of the pin.



#23 David Brown OFFLINE  

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Posted February 05, 2013 - 09:07 PM

That is strange.  Did you use the blade at all?  If you did and hit something hard, it could have put a jolt to the pin and cracked it.  I would assume it would have had to be weak from the start though.  Steel doesn't just arbitrarly break.


Edited by David Brown, February 05, 2013 - 09:07 PM.


#24 Ryan313 OFFLINE  

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Posted February 05, 2013 - 09:21 PM

I did use the blade, combined I only have about an hour and a half on it; although, time does not matter when it only takes a second or two to run into a snow bank. I do not recal hiting anything though. While using it, the blade was tripping very easily, so I put the pin that prevents tripping. Since I had the pin in, more force would have been on that pin.

#25 David Brown OFFLINE  

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Posted February 05, 2013 - 10:03 PM

Sometimes, if conditions are just right, you can get a stress fracture pretty easily.  Just a thought and it sounds good in my head.  Chances are it was just a weak piece of steel from the start.






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