5ft brush hog

I'm using a 5ft brush hog on the back of my tractor while using it backed into a tree stump hitting the brush hog on the side now it clanks while in use. Something is out of balance the blades didn't come in contact with the stump lest don't thing so with the mower on the ground looked under the deck trying to figure it out but no idea. Does anyone have some suggestions what to look for?[/list]
 
Hi Home Machinist

You said you hit it on the side, so is the tip of the blade making contact with the side? Lift up the bush hog and support it on some solid stands e.g bricks or the like disconnect the PTO shaft and rotate it to check. Do not get under the bush hog unless you have it securely blocked up so
it is supported. Never just trust hydraulics implements can crush you.
 
Another thing to check while looking under the cutter,
Check the large nut that holds the stump jumper to the gearbox, if it's loose it can let the stump jumper and blades tips move enough to touch
the top cover, probably not your problem but you need to insure the nut is tight,

I have had the bolts that hold the gearbox to the top plate work loose, this will allow the blade tips to hit the deck plate

For sure something has worked loose or you have bent the side skirt in to point the blade tip is hitting the side skirt,

If you find nothing you may have to call in a buddy, I have had to do that a number of times over the years, I could not find the problem, a buddy
comes over, takes a look around an finds something I had missed,
Above all, safety first, something is loose or bent, I would not use the rotary cutter until you find the problem,
 
How hard did you hit ? If this is not a heavy duty deck, more than likely you pushed in the sidewall and the blades are hitting it. I've done it a few times on the back of my old Rhino SE-6, while pushing small trees over, then chopping just the branches. You'll here it just starting to hit and have to shut down to bend it back. Really no big deal actually, sounds worse if you don't know what it is. Smaller trees and bushes go over easily, it is just the back of the deck can bend inward. Most are not reinforced or built heavy enough for the purpose. The big expensive ones are. It actually works quite well too, and if one of these was beefed up a little, the operator knows the limits, the small trees and bushes will push over and you can chop up the branches while avoiding the main trunk. You can't use it like a dozer but you can tell what will go over and what will not without being wreckless. I did a bunch of clearing last year and went through the mower this spring, including a little work on the deck.

Anyways, I've had it happen when clearing back perimeters with heavy brush, just raise er up, shut the tractor off and use a 10 or 15 lb hammer to pound it back. This particular mower has seen quite a bit of rough use long before I got it. I'd certainly not try it with a new one or one in nice shape. They sure can take some abuse, this one has run its tail wheel over before, pushing one sidewall out.
 
I bet if you look under it you will see where the blades are hitting the side of it. BTDT and had to fix a good many where some one had hit something and bent the side in so it hits the blades.
 
I so happy I'm not the only one that done that. Bad thing did it next
year same stump that stumps gotta go. Anyways I back up to a wall
that's 5 feet up and start hammering you can usually see the spot it's
usually nice and shiny.
 

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