YM 3000 Hydraulics

[chriswheeler]

In the middle of a job, had the hydraulics fail on my YM 3000. Drained the fulid and checked the filter, it was clean except for some traces of a black rubber. Removed the pump, and sure enough, the inner O rings had failed, fluid had leaked past the inner seal into the crankcase mixing with the engine oil. Changed the oil. After a few calls, found out that no one seams to sell a seal kit for this pump, just a replacement pump. Hoye has a great price on a new pump @ $400 or so, but what I really need is a seal kit that can't cost $50. Started thinking, and looked at my John Deere 950 that is waiting to be split for a new 3rd gear this winter. Noticed that the pump on the Deere was almost the same as the Yanmar. Removed the pump from the 950 and installed on the YM3000, perfect fit !! The inlet and outlet ports are exactly the same as well, didn't have to change a thing. The Yanmar uses a 3T84 engine, the Deere uses a 3T90J engine. Right away I noticed that the 3 point and the FEL moves at twice the speed, think the Deere pump is moving about twice the hydraulic fluid. That let me finish the job, but it worked so well, not quite sure what to do for the final repair. I like the JD pump so well, might have to get one for the Yanmar as a replacement ??? It also seams that JD makes a seal kit for this one, another advantage. Guess I have a decision to make here. The point of the thread is that there has been much talk about how, in some models, the parts interchange, the hydraulic pump is one item that does.
Chris

 

[HoyeTractor]

Yes, we have access to those same cheap pumps Wayne. We had problems with them. They were made in either China or India can't remember. Our pumps for the YM3000 are the original equipment Japanese pumps. Thats why they are more expensive ($389). We may offer that cheap pump (though not much less expensive) as an option too though for those on a budget. You generally get what you pay for though.

Chris, I think we have the orings but they dont come in a "kit". We can also get that YM3000 pump in a higher output for the same price. Just an option. It works really good on tractors with loaders but is sort of a waste of engine power for just a three point hitch.

Aaron
Hoye Tractor Parts
Contact Us
(940)592-0181

 

[chriswheeler]

Thanks to both LMTC and Hoye for the replys. ( didn't expect it, thanks to both ) My post was mostly for general info. This high output pump that I took of the 950 works so great with the FEL, it would be hard to give up once I found out what the difference is. LMTC, I wasn't aware that you also sold parts, my mistake, I found your web site and added you to the bookmarks. ( you are now in the loupe ) Would be nice to know what the interchanges are on the parts. Guess I'm one of the few who has both. 750,850,950,1050 all are built with
" SOME" of the same parts, but side by side I can see many differences between my 950 and the YM3000. A parts interchange book would be worth it's weight in gold !!! Bet Yanmar will never let that one into our hands. Thanks again to both of you,
Chris

 

[runningbird]

I am also looking for a pump.
Wayne is your pump an original equipment Japanese pump? if not where is yours made?

 

[HoyeTractor]

Sorry Wayne. I was not aware that the country of origin for those pumps had changed. I guess the pumps you are talking about are now made in Turkey. Either way... our pumps are slightly higher priced because they are the original equipment Japanese pumps. Not a reproduction.


Aaron
Hoye Tractor Parts
Contact Us
(940)592-0181

 

[runningbird]

Chris I bet your original pump was just old and leaking for awhile. I bet you would have been happy with either new pump.

 

[dfkrug]

Would be nice to know what the interchanges are on the parts. Guess I'm one of the few who has both. 750,850,950,1050 all are built with
" SOME" of the same parts, but side by side I can see many differences between my 950 and the YM3000. A parts interchange book would be worth it's weight in gold !!!

Yeah, knowing what parts you can steal from other places can be very
valuable. The NipponDenso alternator on my 955 went out (bad stator) and
I was not going to buy a new one. Guess what? The slightly larger unit
from my 88 Suzuki Samurai fit right in there with the same belt and bracket
holes. These can be had pretty cheap.

 

[chriswheeler]

To Runningbird,
Normaly I would agree, most failures are slow. This one, I was using the FEL and it went from working fine to not working in 10 seconds flat !! This tractor didn't ever require make up hydraulic fluid, ever. When I started working on the problem, I noticed that I was down on the hyd fluid, and over full on the engine oil. Fairly sure what the problem was before I unbolted the pump. Looked at the JD parts book and they show 2 different pumps for this 950. Fairly sure that the one I took off the 950 is the high cap. ( the JD is over SN 20,000 and was made in 85 ) That might also explain why they have the JD listed with less HP from a larger engine than the YM 3000 has ?? JD is listed at 27 at the PTO and the YM 3000 is listed at 30. From pulling with both, the JD seams to have a noticeable better pull put to the ground. ( running the same disk with either ) As soon as I get the rebuild kit for the pump on the 950 and finish using the YM 3000, going to buy the new high cap pump from Hoye. For the other folks out there, I don't have any idea how any of this might apply to other Yanmar tractors. But one thing learned, the high cap pump is much better with a tractor with a FEL. If that wasn't a factor, think LMTC would be getting a call. Both appear to be great supplyers. Thanks to all,
Chris