PTO Shaft - OK if I'm 3/4" short?

[SPYDERLK]

Here's an adapter that increases the PTO shaft length by 1 1/8": SpeeCo PTO Short Increaser - For Life Out Here

Steve

Thanks, KYErik and Steve! Is that generally considered an 'acceptable' solution for type of an issue. I recognize they sell them, but wasn't sure if something like that can lead to other issues, such as with the bearings? At 1 1/8: extension, it is pretty short, which is good.

This is impossible of course. ... It is an adaptation of a smaller spline to give a larger spline. -- A "bushing".

 

[rossn]

Ok, thanks. I agree doing the physical fit is best, and the complexity of my situation is that the tractor and tiller are no where near close to each other, as I haven't bought the tiller yet. I'll see if I can get the buyer to give me a couple days to fit it, and allow a return. Thanks to all for the info. Sounds like best practice minimum is 6" overlap over the full range of motion. I'll also call the mfg Tuesday. Have a great 4th!

 

[aczlan]

Measure from the groove on the PTO shaft to the end of the 3 point lift arms at various points to find the max distance. Then when you go to look at the tiller, measure from the 3 point lower lift points to the locking pin on the PTO shaft and see how much overlap you have. If its at least 4" at the longest point (or 6" when level) you are good to go. If not, you will need an extension or a new shaft.

Aaron Z

 

[jenkinsph]

You may find that there is much more than 6 inches of overlap and not a problem. If the original owner cut an inch or two off of each side you may still have 12 inches of overlap. If you can not try it out on your tractor you should be able to pull the shaft apart and check to see that the shafts are approximately equal in length. Then slide the two sections together with the 6" overlap and get a length for the maximum available for your tractor. Measure from the pto shaft on your tractor to the center of the lower link balls to get a rough idea of what length is needed and see if the existing tiller and shaft allows for the length you need. Don't forget to add for overlap on your tractor shaft.

This way you can measure from the tiller hitch forward and know if you are close enough to make it work without the problems of buying and returning and save that aggravation. That might appear to the seller as someone wanting to till up their garden and then return the tiller wanting their money back.

 

[bigtiller]

When I have reserves whether or not an implement will work with my JD2720, I take the tractor to the selling party and they have helped me put it on and verify that it will work with no issues. That way everybody leaves happy and it is easy to unload when you're home. That's the way I bought my ruff cut mower and wood chipper.

I also wanted to mention that on the SCUT like my jd2305 and maybe on your mf1705, the pto shaft is the shortest when it is in the full raised position.

 

[aczlan]

When I have reserves whether or not an implement will work with my JD2720, I take the tractor to the selling party and they have helped me put it on and verify that it will work with no issues. That way everybody leaves happy and it is easy to unload when you're home. That's the way I bought my ruff cut mower and wood chipper.

I also wanted to mention that on the SCUT like my jd2305 and maybe on your mf1705, the pto shaft is the shortest when it is in the full raised position.

IF the pivot point for the 3 point lower links is BELOW the PTO shaft on the tractor (as it is on most tractors), that will be the case (barring some weirdness with the toplink geometry where the vertical spacing is significantly shorter on the tractor end than on the implement end).

Aaron Z