4520 load match problems

[chevyman29]

cocre , thank you that is what i was looking for . i'll check on getting the tech manual .

 

[Interlaux]

Chevy - yes it maybe a cal issue but....

PLEASE do not try to do it yer self
- the manual wiring colors are most likely less than 100% correct
- if you screw up the cal you'll be in much worse shape and trust me its not a easy cal to do - seen on here more than once - latest was chickenman

A tech manual is a must have for sure.

Stick to your guns - call the dealer tell em its either a sensor or a cal and have them COME TO YOUR PLACE and do the cal so you can see that its made the loadmatch "stronger".
IMHO most deere dealer techs could not do this cal if try tried so be patient.

If your mad now what till you spend the better part of 3 bills for a manual and then "break" that fine 4520 behind it

 

[Cocre]

Don't know anything about 4520, but on the 3320 you do not need to take the tractor to the dealer to calibrate the throttle position sensor. For the most part you sit on the seat engine off, toggle some switches, move the throttle lever, and take some readings. You then loosen two screws at the sensor, slightly turn the sensor, snug the screws up and then take the readings again. Do that until you have it within specs. The worst that can happen is that the sensor will not fall within specs and it may have to be replaced. I believe that is all of two wires and two screws, if not, that is close.

To do a full drive train calibration requires all tires to be off the ground and be run at full throttle, be carefull with that one. Have good jack stands and some clean underware around to change into if the tractor slips off the stands.

 

[chevyman29]

well i ordered the manual today just to have around . but i,ll be taking it in for serviceing just cause its still under warranty . i dont wont to do anything to mess that up .