old beast needs new blades or tips

PBMAX · Jun 9, 2003

Hey I have an old (home made looking hand me down) roto cutter that has 3 parts to the blade.
the one center piece mounted to the main shaft and the actual blades are a replaceable tip about 12" long.
Problam is I can't get the center piece off the darn drive shaft. I think maybe its just been on so long it's rusted to the shaft. or is threaded on.?? any Ideas on how to get it off without killing my self. I'll try to take pic tonight so it makes more sence. But if I can't get the mane section off the pto motor shaft , I'll have to cutt a whole from the top to gain access to the nut(s) holding the blade tips on. Then make a patch for the new access whole yuk /forums/images/graemlins/tongue.gif. That might be the best long term solution but I hate the idea that the access port could fly off if some thing were to realy smack it hard /forums/images/graemlins/frown.gif. Just to clarafy the bolt holdong the tips on are the type with smooth heads like you use in deck framing and there is realy no real room to access with a big wrench. say 1-1/2" to 2" max. Maybe some more liquid wrench or wd40 or propane tourch to heat it and bang on it some more?

tdenny · Jun 9, 2003

Re: old beast needs new baldes or tips

PBurns,

I had the same problem with the old brush hog that came with my used tractor. I wanted to sharpen the blades but I was not able to get the stump jumper off. I tried tons of PB Blaster, WD-40, (I don't have a torch) with no success. I ended up just sharpening the blades carefully with a hand held grinder. Good luck.

pennwalk · Jun 9, 2003

Re: old beast needs new baldes or tips

My 4 foot KK rotary cutter has a hole in the deck just the right size to drop an 1 11/16 socket down on the nut. The edges of the hole in the deck is rounded over so that when you are pulling on the wrench to socket rides on the edge of the hole. The bolt the holds the blade to the stump jumper is sort of like a carriage bolt. It has tabs that fit into slots in the bolt hole so that it doesn't turn when you work the nut.

Chris

PBMAX · Jun 12, 2003

Re: old beast needs new baldes or tips

tdenny, unfortunatley the blades are spent the last inch is broken of one and the cutting edges of both are chunked out from years of abuse aaaa I mean heavy properly used wear and tear... /forums/images/graemlins/grin.gif

PBMAX · Jun 12, 2003

Re: old beast needs new baldes or tips

pennwalk, yep I've tried and tried I think the solution is an access port from the top would be best but this is a tough old bird and it isn't going to be easy cuttin with my sawsall.... or maybe my 4" grinder...to make nice clean wholes. I unfortunately have no cutting tourch...HMMMM I wonder you think the BOSS I mean wife would go for that bit.....A nice new or used cutting tourch could be handy for all sorts..... /forums/images/graemlins/wink.gif

GaryM · Jun 12, 2003

Re: old beast needs new baldes or tips

If you could find a local shop with a plasma cutter I'll bet they could make a nice clean hole in that deck really quick.

markct · Jun 12, 2003

Re: old beast needs new baldes or tips

a hole saw would work great for making an access hole, and where it is located i dont think that anything would come flying thru it. also, if ya realy do want to get the whole center disk (stumpjumper) off, i would try welding a big nut to the center of the stumpjumper, right over the shaft, after ya take the bolt out of the center of course, and then with a big bolt in the nut ya can force it off the stumpjumper, basicly using it as a puller, then just grind the welds and take the nut off and ya are all set. thats how i got one off a JD mower once