4520 load match problems

[chevyman29]

further more whenever i bought the tractor there was a video showing the load match feature being used in the same manner with a tractor doing ground engagement type work on JD web site .

 

[Gator6x4]

125 hrs i think . i never said you could just put it in any range and the load match would do the rest . but i did say that 85% of the time the tractor was pulling the implement fine with no help from the load match feature in B range every now and then you could hear and feel the tractor grearing down which let me no it was using that feature . then one time whenever it stopped moveing i noticed no wheels were spinning and the motor was not bogging down . i feel if it will pull the load 85% of the time in B range with no help then thats probley the correct range what say U

I say if it was my tractor I would place it in the range where it would pull 100% of the time. The damage that is occuring when it stops pulling 15% of the time will shortly have to addressed. I have always found monetarly costs to repair damage to be 100%, but again I also feels someone should be able to use equipment they purchased like they want too and make repairs when they want too.

 

[radman1]

ok here is the problem yesterday i was using my 2 bottom disk plow to turn my garden over . i was using b range with load match turned on everything was working good for a while then i noticed one time whenever it got bogged down that the tires wasnt turning but the motor didnt bog ether . so i stopped and turned off load match and tried to go and of course it killed the engine witch is normal . has anyone else had this problem where the load match feature is not working right ??

I also have a 4520. I don't know how hard the tractor was pulling in B range or how fast you are plowing. The statement " so I stopped and turned off load match and tried to go and of course it killed the engine which is normal" is unusual. With good rpms, and not using the load match, the engine should not die unless the load is just too great for the range or you have phenomenal traction. Does the same problem occur if you use load match in the A range? For plowing, A range should have enough speed, less lugging on the motor and easier on the tranny. In A range, r4 tires will do 3.4 mph and r1 tires will get 4.1 mph. In B range, r4 tires will do 6.6 mph and r1 tires 7.2 mph which is way to fast for plowing. There is no reason to be in B range if 3.4-4.1 mph is fast enough.
The 4520 should have plenty of power for a 2 bottom plow unless the ground is really hard or the range is too high.

However, you said the engine did not bog down and the wheels were not spinning. That is odd but yet it killed the motor with the load match off. Is there a problem in the load match function? Doubtful, I would still expect it to kill the engine even if load match did not work correctly. It is possible a problem is in the relief pressure setting of the tranny but that also is not likely since it will kill the motor with load match off. Try the load match in a lower range and see if that works. You maynot be able to tell if the load match is working in low range because you have the amount of hp available. Should be able to spin the tires in low range. Like others have suggested, the problem maybe too high of range. The 4520 and 4720 typically have more hp than traction and the higher range is causing the relief to open in the tranny.

 

[Interlaux]

To me its clear that the 4x20 has a sensor problem just like the 4x10s.

Course thats easy fer me to say but....

Chev, the OP knows his machine...

has pulled a 2 btm plow in B which even my ole wore out 4610 can do without even raising the engine temp....

and its now not working right - I think he is the best judge.

Chevy - for your machine most JD dealers do not have a clue. If it dont throw a code and you take it to them you prolly just throw away some cash.
Seen it on here more than just a few times.

You can drive it until what ever sensor is going south and throws a code or take a look at the logic and work backwards from there.

for the 4x10s there is not too many things: a mwfd and flywheel sensor and the module. maybe yours will be the same.

To me iif you pull a 2 btm plow with one of these and your not putting it in B range ya got way too much time on you hands. Its not a dang bota:laughing:
course I'm talking about a 14" - maybe a bota could pull a 12

 

[Kyle_in_Tex]

not trying to be rude but if you dont no about the load match feature then dont bother replying . i am well versed in the proper way to operate a ehydro trans .

I understand that you need a little speed to make a disc or plow work. Most are designed to work at a fast walking pace (4 mph). I've only been using load match since 2002. I use it for FEL work, when grabbing a big scoop of material. That is, whenever I ACTUALLY EXPECT THE TRACTOR TO STALL. And I sometimes use it when mowing my pasture going from coastal bermuda (cuts easy) to bahia (cuts like steel cable). It will slow the tractor automatically to what the PTO load is bearing. If I felt Load match kicking in too much, I'd go down to A range. Why are you adamant not to use "A" range? Let the gears manage the torque. Don't depend on a valve in the ehydro to limit power to the rear wheels. Do 18 wheelers under load take off in high gear?

Just trying to help your tractor last as long as it can. Good luck.

 

[chevyman29]

the tractor is still under warranty . if i had bouhgt it used with no warranty i would of course baby it . my whole point im trying to make is that load match is supposed to work in this situation and its not . i was trying to find out if anybody else had problems with the load match not working . to every one saying well just run it in A as its better for the machine well your right . but if i was gonna do everything in A range i didnt need a 60 horse tractor i could have just bought a 40 horse and been fine . not to mention load match was a option on this model that cost more . so it not working bothers me cause im not getting what i paid for . john deere will ether fix it under warranty to my satisfaction or i will trade out of this machine . i dont wont to find out after its out of warranty that something is wrong with it . i would rather work the tractor as much as i can and if anything pops up get it fixed now . thanks to everyone for trying to help . it will be next week before i can take it in to get it seen about .

 

[greg_g]

i feel if it will pull the load 85% of the time in B-range with no help then thats probley the correct range what say U

I feel it will pull the load 100% of the time in A-range. Why so obstinate about staying in B range? Are you "saving" A-range for some secret mission?

//greg//

 

[Kyle_in_Tex]

Even 60 hp tractors have granny gears.

 

[chevyman29]

im saving A range for whenever i totally burn out B and C range cause i be danged if i use the proper gear range on this tractor . im gonna DO ALL THE HARD WORK in B OR C RANGE or bust **** wide open trying . cause one day if im lucky i'll be 90 years old and A range will be just right for me cause i wont have nothing better to do than screw around all day turning one 50 by 150 piece of ground till then i dont got time to screw around with NO ***king A range . to all of you that gets my point about the load match not working right ty for taking the time to reply . for all the rest of you that just wonts to give out advice on the proper way to drive a tractor keep it to yourself . i been on heavy equipment since i was 11 yrs old . i have actually made a living operating heavy equipment including tractors . its not like im trying to do something that the tractor wasnt designed to do in the first place .

 

[Cocre]

If the loadmatch on your model is like the 3x20 then you should be able to calibrate the loadmatch yourself. My 3320 got to where loadmatch acted funny, it thought the tractor was under a load so it reduced the torque to the drive train to the point the tractor would hardly move. I calibrated the throttle position sensor, and the issue went away.

All of this is detailed in the 3x20 techincal manual. I highly recommend that you get the manual for your model of tractor.