Disable MFWD brake on 6920(autopowr) with a switch
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Thread: Disable MFWD brake on 6920(autopowr) with a switch

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    Disable MFWD brake on 6920(autopowr) with a switch

    So I know this is not really an advised modification, and for that, the dealer doesn't really wants to help me along here, but I need it anyway.
    I've done it on a few New Holland's, and on 5100m but this deere is giving me a very hard time.

    So I want to put on a switch so I can enable/disable the fwd brake.
    After some measuring and fiddling with the pedals, I eventually looped a wire between the continue's 12v (which feed's the pedalswitches/controller) and the signal wire from the left pedal with a switch in between.

    Now actually, this kinda works. Switch of, the fwd light come's on when braking. Switch on, the light stay's off when braking. BUT after while he keep's throwing a fault code (Problem with braking pedals). Although I'm kinda used to flip away a few code's, this one isn't very handy cause the little pony refuses to move with it.


    Anyone done this before? Or does anyone maybe has some kind of electrical schedule of it? Pretty frustrating without..
    Last edited by Pieterpost; 03-01-2019 at 05:41 PM.

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    Got it.

    Added a continues 12v wire to the solenoid valve underneath tractor right in the fwd clutch housing, added a switch and voila, it can be turned on and off.
    Still can trow a code at your display, but not an IUC code anymore, so it will be functional and the code is a good reminder that your mfwd brake is off.

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    Zebrafive's Avatar
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    So the continous 12v wire you added keeps the solenoid for MFWD energised and that prevent the tractor from going into MFWD?
    When brakes are applied, 12v is removed from the MFWD solenoid, but only factory wire, not your added wire.

    There might be "backfeed" from the new 12v wire, to the factory wire, setting the code. Maybe the processor "sees" the wire still has 12v? Maybe adding a diode to the factory wire to prevent backfeed would stop the setting of a code?
    J
    John Deere 2030 w/245SL Loader
    John Deere 6415 w/640SL Loader
    John Deere 285 50" deck Stolen May 2017
    John Deere x485 62" deck AWS
    Kawasaki Mule 2510 4x4 bought new 1996
    Ford F250 4x4 bought new 1978

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    Quote Originally Posted by Zebrafive View Post
    So the continous 12v wire you added keeps the solenoid for MFWD energised and that prevent the tractor from going into MFWD?
    When brakes are applied, 12v is removed from the MFWD solenoid, but only factory wire, not your added wire.

    There might be "backfeed" from the new 12v wire, to the factory wire, setting the code. Maybe the processor "sees" the wire still has 12v? Maybe adding a diode to the factory wire to prevent backfeed would stop the setting of a code?

    Yes, but like I said, the fault is a good indicator to remind you the mfwd is off

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    What is the benefit of this mod?

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    Zebrafive's Avatar
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    My guess; not wanting mfwd to engage when using one rear wheel brake for tighter turning
    J
    John Deere 2030 w/245SL Loader
    John Deere 6415 w/640SL Loader
    John Deere 285 50" deck Stolen May 2017
    John Deere x485 62" deck AWS
    Kawasaki Mule 2510 4x4 bought new 1996
    Ford F250 4x4 bought new 1978

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