YM2020D - 3 Pt just stopped working.

Scotty Dive · Jan 5, 2018

I am posting this to see if the experts here have any ideas on where to look first. I normally would jump right into this and not ask questions until I got in over my head but my tractor is outside and the weather is just down right cold and getting colder so if I can save some troubleshooting time it would be ideal.

So, clearing the snow we received last night and since no good deed goes without punishment, I was assisting two other neighbors with removing their snow drifts, and my 3pt just stopped working and I could not use the back blade. Loader and power steering (Hoye Kit) are all working fine. It just stopped lifting and dropped to the ground. Of course I was able to lift it up manually. The first thing I will check for is if there is some linkage problem, but I spoke to the good folks at Hoye who believe it could have been a failed ORing. That will be the next item, but that seems to be a challenge since it will take the whole tractor out of service until parts are available and put back in. Its been about 50 hours (a year or so ago) since I last changed the hydraulic fluid, filter and cleaned the screen.

Hoye thought it could be o ring 22 under the knob (13)

Any other theories or things to test / check?

careyo63 · Jan 5, 2018

I would stick with Hoye. And Might be the Pump Shaft Key....:2cents:

winston1 · Jan 5, 2018

I would wonder if something back in the 3 point area could have frozen. Loader working should eliminate the pump key.

careyo63 · Jan 5, 2018

I thought he said he could lift it and then it dropped to the ground? The loader. That is why I said the key. So yup! rule that out........

Scotty Dive · Jan 5, 2018

Shaft key should be fine since all other hydraulics are working. I thought about the freezing temperatures locking something up back there, but I had been working the tractor for 30 minutes or more so the Hydraulic oil should have been warm enough not to freeze at that point...at least that's my theory. Will try to get on it tomorrow......but temps are dropping fast around here...

kenmac · Jan 5, 2018

I don't have anything else to add except, it may be time for a back up tractor.

Maybe you can use your bucket until it warms up
High here today was 36. 36 would probably be considered a heat wave where you are

If I'm looking at it right,That O ring doesn't look to be a difficult job. Might find something that will fit in an O ring assortment

California · Jan 5, 2018

kenmac said:
That O ring doesn't look to be a difficult job. Might find something that will fit in an O ring assortment

I think that's an application where the identical o-ring is needed.

I found the 'strainer' (wire mesh hydraulic filter) cemented in solid in the YM240 the first time I went to clean it. The o-ring in there intended to seal it in place was not only too fat, crushing the mating surface on the filter, it had also turned into adhesive tar from the heat. I had to replace the strainer. Don't create this problem, in that application!

Scotty Dive · Jan 6, 2018

I partially gave up. I got up at daylight and it was 3 degrees out. Suited up and realized quickly that I had to the take the fender off, possibly the tire and some additional items to gain access. Problem was I was suited up like an astronaut and what would normally take seconds took minutes. At the 45 minute mark my hands were numb my feet were numb and the straw that broke this camels back was I was having trouble getting a socket onto the ratchet and without thinking put the socket to mouth to assist in orientating it correctly and the **** thing almost froze to my lips. I gave up and hope that next weekend it warms up enough to work on it. I have a decent hydraulics place near by and hope they can match the oring assuming that is the problem.

runningbird · Jan 7, 2018

if your loader plumbing uses any quick disconnects I would check them all. Even with the loader functioning you could have one that was dislodged just enough to prevent flow.