LoadMatch on JD 4310: John Deere Review  -- John Deere Tractors Discussion Forum and Review LoadMatch on JD 4310: John Deere Review -- John Deere Tractors Discussion Forum

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 12-12-2003, 20:03 Post: 70984
ncrunch32



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 LoadMatch on JD 4310

Is there any disadvantage to leaving the LoadMatch engaged all the time on an eHydro model? I find that once engaged we usually forget to turn it off. Also - maybe its my imagination - but the tractor seems to go up steep hills with less trouble when LoadMatch is on.






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 12-12-2003, 20:12 Post: 70985
kwschumm



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 LoadMatch on JD 4310

Funny you should ask....

I asked this same question here months ago and nobody knew for sure. So I emailed JD. They said to call the dealer. I called the dealer and they didn't know, but they said they'd talk to JD tech. Turns out JD tech didn't know either.

I think a LOT of people, myself included, leave LoadMatch enabled all the time. Nobody has said not to and the manual contains nothing about it. I don't think it does any harm at all.

And it's not your imagination - LoadMatch is a great feature and it does help on the hills.






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 12-12-2003, 20:21 Post: 70987
kwschumm



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 LoadMatch on JD 4310

Ya know, it would be cool if you could ask your dealer this same question. Maybe if we ask enough they'll figure out a solid answer for us.

Chief, have you ever asked your dealer about this?






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 12-12-2003, 20:33 Post: 70989
ncrunch32



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 LoadMatch on JD 4310

Thanks for your perspective on this - I will probably be going to dealer soon and will bring it up to them.






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 12-12-2003, 21:02 Post: 70993
Chief



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 LoadMatch on JD 4310

In the owner's manual operating section under "Using Load Match (ehydro model) It states that "LoadMatch enables the operator to prevent the engine stalling during heavy load applicationssuch operating with a loader."

In TM 1985 on pg. 157 Electrical Theory And Diagnosis under LoadMatch Switch it states:

"The LoadMatch switch is used to eliminate stalling the engine during a typical application such as loader work. A throttle position sensor is installed to read the no-load rpm engine set point.

If the engine rpm drops far enough below the set point value, the current sent to the transmission drive valve coils is reduced to allow the engine rpm to recover. The greater the load on the engine, the greater the reduction in current.

If cruise control is active and the LoadMatch comes on, the cruise control speed output is "held" at whatever speed it is currently operating at until the LoadMatch goes back to 100%.

In a nut shell if the rpm drops below the selected no load rpm, the controller will modulate the ehydro back to maintain within set limits the selected no load rpm. More or less a system of governance in which the transmission is governed as opposed to the engine.

Long story short.....the ehydro properly functioning and operated will perform as good and better than conventional hydro. I use load match when I cut steep hills with thick grass. I have observed the LoadMatch feature activate and slow the transmission back to maintain the selected rpm. This is particularly handy when cutting as it serves to maintain mid pto rpm output and engine out put at the selected 2,600 rpm and corresponding 2,100 pto rpm. LoadMatch is rpm sensitive so is serves other functions besides prevention of stalling the engine.

The tractor Art operated was not operating/serviced properly, or how can I put this highly unlikely cause as delicate and diplomaticly as possible.........(and I have been guilty of this on more than a few occasions) operator head space & timing or error. Sounds more like the tractor had a problem with it.

The dealer was negligent and plain ole' in bad from leaving the tractor there especially with a competing dealer having a representative there. As I said, the dealer service and demostration of concern made the sale here and rightly so, much to Art's credit.


Hope this was not too much shop babble and answered the question you posed Ken.






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 12-12-2003, 21:10 Post: 70994
kwschumm



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 LoadMatch on JD 4310

Thanks, Chief. I had read all that techno stuff in the manuals, but what they *don't* say is what the ramifications are, if any, of leaving LoadMatch engaged all the time. I can't see why you'd ever turn it off.






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 12-12-2003, 21:33 Post: 70995
ncrunch32



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 LoadMatch on JD 4310

From what Chief says, I would conclude that it doesn't matter if you leave the LoadMatch on - it just depends on how you want to run the tractor. Am I correct? I had noticed that with LoadMatch on - I don't lose RPMs going up a hill but may just get there a little slower (seemed sluggish to me at the time).

So does eHydro stand for "Electric-Hydro"? I didn't realize this. Being in a computer world I just thought the "e" in eHydro meant JD was current with what was going on in the computer age - electronics and all. Does the LoadMatch feature encompass what is unique to eHydro (as opposed to Hydro)?






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 12-12-2003, 21:35 Post: 70996
Chief



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 LoadMatch on JD 4310

Oooops! Sorry! I got wrapped up looking for the original answer to your question and the CRS crept in. Wink yeah right I cannot find anything that says any harm will occur from leaving LoadMatch engaged all the time. I asked my buddy who is the John Deere Regional Govt. Sales Manager and he said that it would not hurt anything and that the 110 TLB is designed with the system set in LoadMatch all the time. There is no LoadMatch switch to select......it is incorporated into the system. The LoadMatch does not function unless you place the machine under a load large enough to cause engine rpm to drop more than the parameters preset into the LoadMatch circuit. So.......I would say no,use the load match all you want. The reduction in drive speed is a function engine speed against drive speed coil voltage and not a phenominon that would cause wear and tear. Well, at least that is my story and I am sticking to it! Wink yeah right






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 12-12-2003, 21:46 Post: 70998
kwschumm



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 LoadMatch on JD 4310

Thanks, Chief, I figured that it wasn't a problem but it would have been nice to get confirmation from JD.

ncrunch, yep the eHydro has electronic controls that the standard hydros don't have. LoadMatch is one feature, and MotionMatch is another. Yeah, when LoadMatch engages the tractor understandably slows down a little. Still a lot better than stalling out or having to stop and change ranges on a hill. The electronics are a mixed blessing. There's more to go wrong, and parts may be hard to come by in 20 years, but I sure like the extra features. The word is the eHydro can be converted to the 4300 standard hydro if need be since it's the same basic tranny. Never heard of anyone doing it though.






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 12-13-2003, 06:44 Post: 71028
Art White



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 LoadMatch on JD 4310

Chief, my main reason for being there was because I didn't like the parameters of an open demo under the conditions described. The other salesperson just didn't qualify the sale, or consider the situation very throughly before taking the tractor out. The conditions were steep and I was able to feel the system working or so I thought. The sharpest part of the grade was only about 30 foot in distance with good slopes on either side. Both tractors were put on the slope and yes there was a fellow there that to me would never drive a hydro(he sure could drink the beer) as he stalled three times on the Kubota tring to climb it.






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