Pulling a stump jumper off a Land Pride rotary cutter?

[Fallon]

I've got a LandPride 1860 rotary cutter with a leaky output shaft seal, possibly other gearbox issues. I got the castle nut off the bottom, but am not able to get the stump jumper off the gearbox. Crowbars, 7' tamping bar, propane torch heating up the outside of the splines, no luck. I can't get a great place to pry as the deck & pan on the stump jumper flex a lot. But I heated things up & was prying as best I could. Beat on theings with a hammer & some rebar as a drift. Flipped it right side up & pounded on the top of the stump jumper througth the big hole for accessing the bolts holding the blades to the stump jumper.

Any suggestions? Get a better torch than my little yellow bottle MAPP gas torch? Porta power that may get under the stump jumper to try & pry closer to the center of the stump jumper?

 

[old and tired]

I would have just filled the gear case with Corn grease 00 and not done anything else... Corn grease doesn't leak out the bottom seal.

Waiting to see what others say... Good luck with it!!!

 

[Fallon]

I would have just filled the gear case with Corn grease 00 and not done anything else... Corn grease doesn't leak out the bottom seal.

Waiting to see what others say... Good luck with it!!!

I did this with my old flail mower. $80 for new seals was more than the mower was worth. Still have it as my backup & last I used it the gearbox was doing better than the rest of the mower with multiple cracks in the deck.

This one belongs to a neighbor & they want it done reasonably right. I think is leaking a bit much even for grease. I'm half expecting to find bearings going out, which would be a new gearbox, which they are fine with. But I still need to get the stump jumper off to replace the seal or pull the gearbox apart enough to check the bearings.

 

[WM75Guy]

I would think heat and hydraulic spreaders are viable options. If you try a hydraulic spreader I would use 2, one on each side, so it will come straight off. Just using one will cause it to flex, bind, and possibly score the shaft. Don't be standing in front of it when it comes off. Use the FEL and bucket to stop it from flying off. Same principle as when we popped doors at wrecks, the guy pumping the hydraulic pump had his butt against the door.

 

[Tinhack]

There's most likely a splined/keyed bar behind the disk and blades. Pull the blades off first then the disk should come off. The bar may need a puller to get off.

 

[WM75Guy]

There's most likely a splined/keyed bar behind the disk and blades. Pull the blades off first then the disk should come off. The bar may need a puller to get off.

That sounds like the proper way to go, easier than a hydraulic spreader. A 2 jaw puller would make short work of it. I took this diagram off the Land Pride website. I used my Land Pride model number to look up the manual.

 

[Xfaxman]

Any suggestions?

This is what I did to remove the stump jumper on mine:

Put another wrench on the head of the big bolt and did "lefty loosely" forcing the nut down putting tension on the chain.

The little bolt through the shaft, kept it from falling when it broke loose

 

[KS KIOTI]

You’d be surprised what an air hammer/chisel will knock loose. Short work of stuck rotors, and pins on loaders, brrrrrrap and they’re loose.

Not sure if you have a long enough bar and room to give it a couple hits through the holes on top of the cutter.

 

[ruffdog]

I drilled and tapped two 1/2-13 holes so I could bolt my puller to the stump jumper.

 

[jshwhite]

In my experience, hammering the end of the shaft (with the nut on to protect it) while you have pressure on the stump jumper, is the best method. Easiest is if you have a FEL or backhoe, flip the whole cutter upside down and pick it up a bit from the stump jumper. Give the shaft a whack or two and it will drop out. Watch your toes/legs. They can be a beast to get off.