10 ft older Bush Hog. Thet drive shaft turns fine bout blades will not turn. Are they a sheer bolt under the Stump jumper.

[oldroosterman]

10 ft older Bush Hog. The drive shaft turns fine but blades will not turn. Are they a sheer bolt under the Stump jumper.

 

[Jim.ME]

10 ft older Bush Hog. The drive shaft turns fine but blades will not turn. Are they a sheer bolt under the Stump jumper.

No, if it has a shear bolt it would be in the PTO drive line at the input shaft of the gear box.

Did you read/understand the replies you got yesterday when you asked this down on the 9N, 2N, & 8N forum? It would be in the PTO driveline as was posted in the original thread there (along with a picture of a shear bolt in a drive line and that you might have to remove the drive line guards to see it.

Post some pictures of your cutter so we can see just what you have for a drive set up.

 

[walterg]

10 ft older Bush Hog. The drive shaft turns fine but blades will not turn. Are they a sheer bolt under the Stump jumper.

You probably stripped the splines in the stump jumper.

 

[oldroosterman]

10 ft older Bush Hog. The drive shaft turns fine but blades will not turn. Are they a sheer bolt under the Stump jumper.

You probably stripped the splines in the stump jumper.

That sounds better than anything I have heared.

 

[oldroosterman]

That sounds better than anything I have heard. Thank you.

 

[wh]

Neighbor did that several years ago. Brought it to me to fix. New stump jumper, new shaft from gear box to jumper. It was a bush hog brand. Easy to get the parts. Appeared that jumper had been run loose and messed up the key way on jumper and shaft.

 

[oldroosterman]

Neighbor did that several years ago. Brought it to me to fix. New stump jumper, new shaft from gear box to jumper. It was a bush hog brand. Easy to get the parts. Appeared that jumper had been run loose and messed up the key way on jumper and shaft.

I would say that is what itis I will tear it down.

 

[a49deere]

That sounds better than anything I have heared.

That sounds better than a sheared shear pin, a stripped spline! HHHMM!

 

[DoubleR]

That's what my Land Pride cutter did when the gear box went out.

 

[john in la]

That sounds better than a sheared shear pin, a stripped spline! HHHMM!

HHHMM it would be real easy to see a sheared shear pin just by looking at the gear box input shaft.
So if the input shaft is turning striped splines on the output shaft would be the next best logical place to look.

 

[a49deere]

HHHMM it would be real easy to see a sheared shear pin just by looking at the gear box input shaft.
So if the input shaft is turning striped splines on the output shaft would be the next best logical place to look.

He said, "drive shaft turns" The drive shaft can turn on my mower and not spin the blades, I can't see the shear pin unless I look under cover that is over input shaft! Could be the same situation, and also mentioned in comment #2

 

[rick n ohio]

Block the brushhog up to where you can get under it and look at the shaft coming out of the bottom of the gearbox where it goes through the stump jumper while someone turns the driveshaft by hand slowly then you will see what is turning and what isnt.

10 ft older Bush Hog. The drive shaft turns fine but blades will not turn. Are they a sheer bolt under the Stump jumper.

 

[Texasmark]

In my experience the protective device is on the input shaft to the gear box, protecting the whole mechanism. I had an accidental high center on a terrace once with a twin blade, single gearbox input, with a tractor that had a higher PTO rating than that of the mower. Don't remember all the this and that, but the main gearbox ate up its internal gears resulting in one blade that ceased to turn.