Brush hog question

[jester7891]

I recently bought a 42 inch brush hog on E-bay. This is a World International Agricultural Corp. (IM 420) machine. From what I understand, the company went out of business about three years ago. I have found dealers who can fix this machine and replace parts - so far everything is working great. I had trouble locating a manual but a very nice woman in Ohio (connected to the original company) is going to send me a copy of a manual of a very similar (but not exact) brush.

This is my present problem. I was not sure about the sheer bolt (I was concerned that it may not be the proper soft metal, #2) so I removed it without much difficulty. I then wanted to slide the shaft off of the gearbox so that I could clean both and replace the shaft plastic covering (which is somewhat beat up). I'm having trouble pulling the shaft off of the gearbox. I'm wondering if I'm missing some extra button somewhere or is it just stuck on/rusted? I was able to move the shaft approximately 1/4" down off the hole. Is it possible that it is not supposed to be removed at all? Any suggestions would be greatly appreciated.

Thank you, Jester

 

[greg_g]

It should slide right off. You're probably either fighting rust, or a burr where the bolt went through. Squirt a little penetrating oil between the collar and the transmission input shaft. After it sets for a while, put a block of wood or a short piece of 2x4 against the collar. Use a hammer on the other end of the wood. It should come off with a little convincing.

//greg//

 

[joe48]

It should slide right off. You're probably either fighting rust, or a burr where the bolt went through. Squirt a little penetrating oil between the collar and the transmission input shaft. After it sets for a while, put a block of wood or a short piece of 2x4 against the collar. Use a hammer on the other end of the wood. It should come off with a little convincing.

//greg//

Better look at end of gearbox shaft before doing any hammering. Some units with the smooth shafts that use the shear bolt for retention of the PTO shaft and U joint have a C- clip at the end ,so when the bolt shears the PTO shaft can't come off and whip around and do a lot of damage.

 

[smitty9266]

You will not usually see the C clip until you remove the shear bolt and push the drive shaft further on the gear box shaft, while bending the shaft to the side. It sits in a recess in the yoke.


Jeff

 

[Kubotaman1945]

Important Question on IM brush hog and shear protection:
Hey folks, this site always comes through! Other folks with IM equipment, wow.
Just bought a pretty-good condition International Machines 42-inch bush hog that has been sitting around for 10 years; no manual, but its working seem pretty straightforward, and price was very right, felt like solid piece of machinery. Scraped rust, repainted, going to sharpen blades, ready to go but one big question: Trying to see where a shear pin is on the unit. I imagine there must be one but where?
Looks like there's a bolt on the round disc blade holder, and also a small bolt on the axle that connects the PTO. Is one of those it? I don't want to damage the PTO on my new-to-me Kubota, and this being Vermont, yes, we do have rocks (and stumps). Any advice would be greatly appreciated.

 

[Sackett2]

the pto connection to the hog gearbox, look for the bolt. That is all it is.

 

[JoeinTX]

I do believe the company that made your rig still lives:


Farm Implements, Rotary Cutters, Finish Mowers. Hamersville, OH.



They are at least "owning" the International implement line so you may be able to contact them for help or parts or know-how.

 

[Kubotaman1945]

Everyone, thanks for the info on the shear bolt. i hope to have some sheer luck with it....

 

[LBrown59]

Everyone, thanks for the info on the shear bolt. i hope to have some sheer luck with it....

L O L