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Bush Hog Blade Removal

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Dave

07-09-2001 09:37:07




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I have an old rotary cutter that I was told was a bush hog brand, but it has no nameplate and has been repainted mutltple times. It is a 48" cut and the deck measures 52" wide. I broke a blade on this unit and need to replace them, however, I am not sure how to get the old ones off. The blade holder is just a rectangular bar that is attached to the gearbox. The blades are held onto the blade bar with a shoulder bolt which has an oval shaped head and about a 1 1/8" thread. the bolt is attached to the blade bar with a nut on top. I have been able to remove the nuts, but the shoulder bolts still see firmly held in the blade bar. I have hit the end and they don't seem to move, but don't want to hammer too hard and damage the threads. Does anyone have a gues as to how these are held in the blade bar? Are the screwed in or just pressed in? Since the head is oval shaped there does not appear to be a good way to find a tool to try and screw it out and will have to improvise something. If it is pressed in I can try some heat and more vigorous tapping. I gues I am looking for some help (or guess) on how to proceed.

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Skip

07-10-2001 09:09:14




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 Re: Bush Hog Blade Removal in reply to Dave, 07-09-2001 09:37:07  
Don`t worry about the bolt just get it off. If you can take a torch and cut the shoulder off and knock it out with a hammer just don`t mess up the bar that is attached to the gearbox. Go to Agri Supply or someplace like that and get new bolts and lockwashers when you get new blades. I replace everything every spring and it makes the job a lot easier.



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Steve from Tn

07-10-2001 06:01:56




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 Re: Bush Hog Blade Removal in reply to Dave, 07-09-2001 09:37:07  
Dave, before you start banging on the pin, I would put blocks under your Bush Hog. I believe that this will make the shock of your hammer go through the pin instead of making your Bush Hog bounce. I am not an expert on this. The last time that I "attempted" to remove that same pin, I gave up. I beat on it for hours. Great work out!



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JHEnt

07-09-2001 17:12:03




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 Re: Bush Hog Blade Removal in reply to Dave, 07-09-2001 09:37:07  
Sounds like a bushhog. Basically the pin (or bolt) has a key made into it. The bar then has a slot cut on one side of the hole. Acording to the pin size it should be a Bush Hog cutter. If it has an access hole on the top of the deck then get yourself a large steel rod and a 15lb sledge hammer. A few good wacks from above shold knock them loose. I have found its better to buy new pins than to mess with it for a day or more trying to be careful. Manytimes the pin will come out without damage to the threads with a rod to hammer against.

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Dave

07-10-2001 07:28:38




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 Re: Re: Bush Hog Blade Removal in reply to JHEnt, 07-09-2001 17:12:03  
Thanks for the information. It looked like the bolts just needed to hammered out, but since I was not sure I did not want to keep hitting it. I will tackle it with some more persuation. Yes, there is a hole in the deck to access the bolt as that is how I removed the nuts.

You said that you replace the bolts. Do you have any sources for replacement blades and bolts? Once I got the blades off I was going to go to a dealer to match them up. Does anyone know of other sources for blades?

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Robert in W. Mi.

07-10-2001 15:47:34




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 Re: Re: Re: Bush Hog Blade Removal in reply to Dave, 07-10-2001 07:28:38  
The idea of blocking from the bottom before beating the bolts out is a good one, but i use cement blocks instead of wood. I'd all so spray penitrateing oil on them, and soak them a while before pounding on them. Turn the nut on, but leave it loose to protect the threads before pounding on the bolt. Always put the bolt back in useing antisease, (great stuff) so it will come apart next time with out all the hammering. Factory blades will be a lot better quality that Farm & Fleet blades. I think they are worth the extra $$. Robert

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Matt

07-10-2001 11:35:19




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 Re: Re: Re: Bush Hog Blade Removal in reply to Dave, 07-10-2001 07:28:38  
I was able to get blades & bolts from Blaines Farm & Fleet, so I'd guess that any farm supply store would have them. (If Blaine's actually has them in supply, literally, anyone else should! LOL)



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