Help with 1500D tiller?

[rbeitz]

I have a 1500D and a Yanmar tiller. It seems that every time I run the tiller a little too deep or, when the tractor goes over some uneven ground the PTO shaft comes apart.

I am using the shaft that came with the tiller, I don't see how I could use one any longer or the tiller would not be able to be lifted up. Is something out of adjustment of do I just have to keep this thing running shallow? I'll try to get a picture posted to show you how it is set up.

Thanks,

 

[EFC]

That defiantly doesn’t sound right. Please post a pic. You shouldn’t have much more than 2 inches of take-up on the shaft total from top to bottom.

 

[rbeitz]

Ok here's one photo. You can see the shaft and the top link. The top link is adjustable, I just don't know if adjusting is what it needs.

 

[rbeitz]

Here's a view from the other side...

 

[rbeitz]

And one more view from the top...

Thanks in advance for any advice you can offer...

 

[rbeitz]

And one more pic to show what I've been doing with my tractor. We've put in a pond earlier this summer and just yesterday I started installing a big shrub bed as a backdrop to the pond. The tractor has been great for both of these projects except for every now and then when the pto shaft comes apart and I have to shut it down and put it back together.

 

[normde2001]

Have you taken the driveshaft apart and inspected it? If one end, inner or outer, is a different length than the other, that will greatly reduce the distance it can expand when the tiller drops and collapse when the tiller is raised. If the lengths are equal and the shaft is near bottoming when the tiller is raised, then all you can do is shorten the top link and limit how far it can drop.

 

[BrettW]

Norm, I hate to muddy the water here but are you saying that when you have to cut down an implement shaft that you should cut both the male and female ends so that both maintain apx. equal legnths? thanks, bw

 

[rbeitz]

The shafts are pretty close to equal lenth. I'll have to measure them to be sure. From my pictures does it look like I installed the top link correctly? I wasn't sure if that bracket went up or down? From looking at it I don't know that it would make a difference with this problem though.

 

[EFC]

Beautiful soil you get to work with. You have the wrong shaft for that tiller tractor combo. Sometimes Japan sends the wrong shaft with the tiller and sometimes the dealer finds one that will fit to replace a crappy one. I am worried you will do some serious long term damage to your PTO if that keeps coming apart. I have new shafts that will work and I am sure other dealers sell them also. Get a new shaft that is cut to fit if you can afford it.

 

[EFC]

It is installed corectly.

 

[normde2001]

Absolutely, they must bottom at the same time to get maximum collapse and expansion. If you buy a new shaft, you should attach the tractor end, raise the implement to maximum height, measure and cut both ends equally so that it will come within about 1" of bottoming when hooked to the implement in raised position. There should be 4" of overlap in the fully extended position.

 

[tractorlet]

I have three YM1500D's and just checked all three. All have a square tube male coming from the pto and the female is off the tiller. Your top link, lower lift arms and tiller all sit in the correct relationship and the top link has the correct threads showing (about two inches) All that is left as the problem is the telescoping drive line. I can't remember other YM1500D
drive lines as to variations from the three I have. Your pictures look like you have a round female attachment to the pto shaft. At any rate Buck is most likely correct as to the problem being a foreign or altered drive line causing the problem.

 

[rbeitz]

The shaft on mine is round. The female end is on the tractor end. The male end has splines and one of the splines is raised so that you have to line it up just right to get it back together.

So, from what I'm am reading here it sounds like this is not the correct shaft for my tractor/tiller. Is there something special in the Yanmar shaft or can I just go to TSC and buy one to cut to length? What should I expect to pay for a new shaft?

Thanks,

 

[normde2001]

Rob, if you remove the shaft from either end, raise the tiller to full height and see if your shaft is a long way from bottoming, then it is too short. According to the TSC catalog, they have tiller shafts 28", 32" and 35" for $110 to $120, or they have an extension adapter for the pto shaft for $17.50. With the adapter you would have to Measure and cut your shaft to fit like a new shaft.

 

[jmf7112001]

I''m a small dealer in Ala. Everyone of the pto shafts I get that are designed with splines in it is bad. It seems the splines wear out and there is too much play. Your'e on the right track go and buy a new one. I bought several before I sell the till, I check them out to make sure they are OK.

 

[YanmarFever]

Where do you buy new ones at?

I need a few my self

Ernie ernie@molalla.net

 

[wallysue]

My 1500D and tiller also came with a round PTO shaft that was too short. I don't use the Yanmar top link or bracket and have a regular cat 1 adjustable top link shortened to work instead. For the PTO it is lengthend by welding in a piece of pipe so it is long enough. Some part of the original stuff was goofy.
Wally

 

[jimstractors]

Ernie,
www.agri-supply.com sells PTO shafts, overrunning clutches, and adapters. +
Jim