Re: (ET) E20EA troubles - and here comes the snow!

[cz <cz alembic crystel com>]

Maybe your brake switch is frozen and not closing. Check the little lever

Sent from my Verizon Wireless 4G LTE DROID

Max Hall <mhall maxmatic com> wrote:

2' easily here, west of Boston. 

Curiouser and curiouser: Bypassing the big circuit breaker on the motor, CB-3 on the E20EA, changed... nothing.

HOWEVER... (as Buckminster Fuller used to say, "you can't know *less* after you do an experiment!") I observed unexplainable (so far, by me) behavior: The VOLTMETER cut out when I disconnected wires from CB-3. According to the schem, the path to ground for the VM has nothing to do with CB3! I'm sure it is thoroughly relevant... somehow! (The fact that it worked when I parked it seems crazier than ever.)

I wish I didn't have to debug out in the snow. Not that it isn't kinda purdy as the clear, high pressure air starts to move in. It's that cool, particle-laden breeze that's tough.

On Fri, Feb 8, 2013 at 6:23 PM, The CZ Unit <cz alembic crystel com> wrote:

The big circuit breaker mounted on the motor. It powers the contactors and all that good stuff. Check to see if it's open or has been knocked off. If open and you need the tractor try bypassing it and don't overload the thing.

Note: Blowing 2+ feet of snow uphill and pulling >300a from the pack is not in my mind "overloading" :-)

Wish we had 2 feet of snow. Sigh.
Chris

On 2/8/2013 4:59 PM, Max Hall wrote:

RJ, Larry, Walt, Nick, all,

THANKS!

I'm sure it's something stoopid, but I haven't figured it out yet! I did
check the keyswitch, brake switch, and seat switch... all are good, all
are making.

There's only one other suspect in the path to ground. The schematic RJ
sent sure points a finger at "CB-3 in motor"... what the heck? A
low-current circuit breaker "In Motor"? I'll know soon enough... I have
to suit up again to get out there and under the thing to have a look.

I hope you all are safe and well in snow or not, and thanks again for
your replies,

LOVE THOSE TRACTORS!

-Max

On Fri, Feb 8, 2013 at 2:49 PM, Max Hall <mhall maxmatic com

<mailto:mhall maxmatic com>> wrote:

    Hi, all,

    I'm stuck. No forward speeds, no reverse speeds.

    My ol' manual only has schematics up through AA and BA, and I think
    I'm missing something important!

    If I use my finger to actuate RTN or RTN-R, the tractor behaves
    perfectly. But neither RTN not RTN-R will pull in by itself!

    Anyone have a schematic for the E20EA?

    -Max in Boston

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