YM276 model compatibility and hydraulics question

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darrellss
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YM276 model compatibility and hydraulics question

Postby darrellss » Thu May 09, 2019 9:45 am

Recently bought this tractor which is in fantastic shape. My prior tractor was a Deere with hydrostatic transmission, so it took a little time to get used to the Power Shift on the Yanmar. About the 4th time I used it, after raising the hitch with the finish mower to drive out of the shed, the lift began to "pulse" while sitting idle. Then it didn't do it once things were warmed up. I checked fluid levels, all seems fine there. So is this "normal" and is fine after things warm up or an indication something is starting to fail?

Additionally, is there an import model that is the same equivalent to the YM276? I assume the 2310 since it is also 27 hp, but would like to confirm.

winston
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Re: YM276 model compatibility and hydraulics question

Postby winston » Thu May 09, 2019 10:22 am

Sounds like your lift is leaking somewhere, when it drops a little the valve tells it to raise back to set height, a bounce is sometimes created.
Sometimes happens on numerous different tractors, doesn't have to be Yanmar. If it doesn't become bad I would keep on trucking, just an opinion.

darrellss
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Re: YM276 model compatibility and hydraulics question

Postby darrellss » Thu May 09, 2019 11:13 am

A fluid leak or pressure leak? I have not seen any fluid leaking issues except for a very light drip coming from the power steering cylinder, but the overall fluid level appears to be fine.

winston
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Re: YM276 model compatibility and hydraulics question

Postby winston » Thu May 09, 2019 3:06 pm

An internal leak such as lift piston of lift valve.

darrellss
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Re: YM276 model compatibility and hydraulics question

Postby darrellss » Thu May 09, 2019 5:13 pm

How would I confirm?

winston
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Posts: 4936
Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: YM276 model compatibility and hydraulics question

Postby winston » Thu May 09, 2019 6:34 pm

You can raise your lift with a load, close the stop/slow return valve, kill the tractor and see if it leaks down. If not, you could assume your lift piston is not leaking by. Be sure to open the stop valve before trying to operate the 3 point again.


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