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Implement Alley Discussion Forum

brush hog noise

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kpage

07-04-2005 18:24:26




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when i engage the pto on the brush hog it sounds ok but once i put it down and start mowing it makes a banging sound like the blades are hitting the sides or top but when i checked there is no sign of the blades hitting anything.I do notice that when i start moving the whole 3pt hitch and brush hog or anything else i hook on the 3pt always sway's to the right so the pto shaft on the brush hog is at a slight angle, would that make that sound? i have no clue what it is. the gears seem tight and its full of gear oil. Thanks

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Jerry/MT

07-05-2005 21:36:18




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 Re: brush hog noise in reply to kpage, 07-04-2005 18:24:26  
Do you have stabilizer bars on your three point? (They go between the rear axle and the lift arms and locate the whole 3 point assembly.) If your mower is moving around due to the torque reaction, that may be the cause of the noise. The stabilizer bars will hold it in place.



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acmfmh

07-05-2005 07:37:24




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 Re: brush hog noise in reply to kpage, 07-04-2005 18:24:26  
I had the same problem on a 7ft hog. The bolts holding the gearbox to the deck were loose. The torque made the gearbox twist enough that the blades would sometimes make contact with the deck.



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NEsota

07-05-2005 05:50:42




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 Re: brush hog noise in reply to kpage, 07-04-2005 18:24:26  
On my hog, the head of the big bolts are keyed so that they do not turn, and only one wrench is needed to tighten or loosen them. If there is already a 2-3 inch hole in the top cover, that is for access with a socket wrench and extention from above. If there is no hole for access from above, I would make one. This makes the R&R of the blades very easy.



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Rod in Smiths Falls, ON,

07-05-2005 05:03:06




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 Re: brush hog noise in reply to kpage, 07-04-2005 18:24:26  
Mine makes that noise just before it stops rotating. It turns out that it is a small piece of sheet metal from the front guard bent into the path of the blades after an encounter with a rock. The only time it contacts the blades is when they are almost stopped, so I haven't fixed it.

You might want to check the sheet metal for a contact point before taking the blades apart.



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KEH

07-04-2005 19:10:12




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 Re: brush hog noise in reply to kpage, 07-04-2005 18:24:26  
Are bolts that hold the blades on loose?
KEH



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kpage

07-05-2005 14:42:50




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 Re: brush hog noise in reply to KEH, 07-04-2005 19:10:12  
MY bolts are the same, i only need one socket through the top but the bolt is turning when i try to turn the nut. The blades are pretty beat so i would like to change them anyways but i need a good idea on hoiw to get the nut of and keep the bolt from turning. I looked underneath the hog and i see no place that the blades are making contact but that is what it sounds like. the higher the pto rpm's the more it bangs. thanks again

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kpage

07-04-2005 20:24:18




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 Re: brush hog noise in reply to KEH, 07-04-2005 19:10:12  
what i can say about the bolts is that i tried to loosen them because i was going to buy new blades but the nut wouldn't come off the nut and bolt just turned. They didn't seem loose to me though but i am new at the tractor and implements



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Dug

07-04-2005 22:56:44




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 Re: brush hog noise in reply to kpage, 07-04-2005 20:24:18  
I had the same problem and my bolts were loose on the blades. Replacing them proved to be an afternoon of shear joy! I had to turn the mower upsidedown to get enough force to remove them. You are going to need to wrenches, one to hold the bolt and one to turn the nut, it may be advisable to have a buddy over when you decide to do this. When you replace them, skip the lock-tite and double nut them.

Dug

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kpage

07-05-2005 03:40:19




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 Re: brush hog noise in reply to Dug, 07-04-2005 22:56:44  
the nut and bolt are huge on these. the nut had a cotter pin through it but the bolt is round underneath the mower so i don't see how another wrench will go on it but i'll take a better look at it today. thanks



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KEH

07-05-2005 11:06:54




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 Re: brush hog noise in reply to kpage, 07-05-2005 03:40:19  
I've only dealt with Bush Hog brand cutters, but they have the hole in the top of the deck and Bush Hog sells a special big socket with a square shaft for you to have a place to put your large adjustable wrench and a pipe cheater bar. I used 18 inch Cresent. The Bush Hog has a tapered bolt with built in key and the blade carrier has a corresponding tapered hole wit keyway. Sad story is that my loose bolt turned in the key way posobly ruining it. Problem caused by previous owner welding nut on. I have not got the time and energy to tackle the job yet.
What make of cutter do you have?

KEH

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kpage

07-05-2005 18:33:40




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 Re: brush hog noise in reply to KEH, 07-05-2005 11:06:54  
It's orange and say's trail blazer on the side. i paid $225 for it at a equipment auction a couple of weeks ago. I tried to remove a blade already. After i took the cotter pin out and used a 3/4inch drive along with a pipe and huge socket and the result was every thing turning and nothing loosening. Was thinking of calling my bro up and seeing what the biggest socket he had for an impact wrench and then turning the hog on it's side and banging on the round part of the bolt while i used the impact on the nut.

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KEH

07-06-2005 04:39:01




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 Re: brush hog noise in reply to kpage, 07-05-2005 18:33:40  
Not familiar with that make.

On mine, I am think of trying to hold the round part of the bolt with a pipe wrench. May have to just torch it off.

KEH



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