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Breaking Springs

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DumOleBob

12-03-2001 17:01:24




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Every year I break two or more return springs on my Boss “V” snowplow. The springs have hooks on either end. One hooks to the plow’s frame through a hole drilled thru about ¼” plate. The other end is attached to an (adjustable) eyebolt. They break at what looks to me to be the exact point where the spring's hook would contact the plate. The plate must abrade or weaken the spring at that point until it just lets go. Seems like there ought to be a “bushing” or something to cut down on the friction. Any ideas??? (oh, yea, there is a fifty two million dollar reward for a solution (Afga $ - sorry)

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RayP(MI)

12-04-2001 18:42:59




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
Is it possible that the base of the spring contacts the plate in certain blade positions, and puts torque, (twist) on the spring? I like the suggestion of putting a link on the plate, and attaching the spring to that, assuming that there is enough room in the eyebolt adjustment.



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Ray

12-04-2001 08:47:06




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
I would add a shackle that would fit in the hole. What seems to be happening on your end is that it is a sharp edge and with the vibration while driving it is wearing the spring thus allowing it to break after a certain amount of time. The shackle will act as a buffer between the two mounts. Give it a try, it has worked on my Brother-inlaws truck for about 5 years now with no springs broken yet. Just my two cents worth.....

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DumOleBob

12-04-2001 07:48:39




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
Boy, what a site. It sure is great to be able to tap into all the experience available from you fellows! I'm a lucky guy to have your help! Thanks!



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Farmer-Gene

12-04-2001 07:24:46




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
For some reason I can't look at your drawing, but I had that problem on my Western plow, new springs didn't help either so I had an old Melroe ASR plow and I took the springs off that and put on haven't had any trouble since, been 3 years now. Now if I could only get the clutch in my truck to last longer than 2 years.



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John ('48 Cub), Ohio

12-04-2001 04:13:12




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
I like the idea of chamfering the hole a bit. Second to that, I might look for a small brass bushing to put through the hole. Something like a eylet repair kit might even have the right size. My third favorite is the chain link idea. Even if the link breaks you could keep a couple spares in the glove box (assuming this plow is on your truck). I would be hesitant to use a bigger spring as I am guessing that the cylinder shown in the drawing is pneumatic, and may not be able to push against a spring with increased resistance. Just my 2 $.02.

JohnP

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olddawg

12-04-2001 01:35:36




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
Coming in contact with something else, and getting sheared off???? Just a thought.



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Kevin

12-03-2001 18:43:40




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
I would park the plow, take the winter off and relax. I'll take my 52 mil in Italian Lira. Thats about $20 US!



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DumOLeBob

12-04-2001 06:43:47




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 Re: Re: Breaking Springs in reply to Kevin, 12-03-2001 18:43:40  
OK, I'm gona do it! Thanks so much! Don't know why I never thought of this!!!!!



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jim

12-04-2001 06:53:15




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 Re: Re: Re: Breaking Springs in reply to DumOLeBob, 12-04-2001 06:43:47  
Why not use a threaded clevis(shackle) available at most hardware,TSC store or dealership through the existing hole , then take up the slack using the threaded rod. Clevis won't break and you have eliminated the problem.



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Branden

12-03-2001 18:30:54




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
My guess is that you would eliminate your problem if you stepped up to a bigger spring. If you have to drill that hole a bit larger in that plate, so be it. I have a feeling that the blade is a little heavy for the size of spring they are using. Not sure how much springs run,$$, but I would do that first if it were mine.

Branden



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buck

12-03-2001 18:28:19




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  

I would suggest a clevis to act just as your eyebolt If your spring should break then force the clevis through the spring 2 or 3 rounds up reattach and you ready to go.



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T_Bone

12-03-2001 18:08:43




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
Hi Bob,

I would hone the bracket hole to a inside radius so it's smooth and the spring doesn't hang up.

Mac also has a great idea with the chain link.

T_Bone



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mac

12-03-2001 17:11:22




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 Re: Breaking Springs in reply to DumOleBob, 12-03-2001 17:01:24  
Think I would be game for a "slight" smooth chamfer on the holes where spring is hooked. Maybe a countersink or a small die grinder would work for you. Ya got room for a chain repair link? That would be smooth as the eyebolt.



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