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Re: (ET) Alltrax and PTO
I did not engage any throttle on the Alltrax. The PTO switch on/off also
engaged and disengaged the Alltrax main solenoid.
What voltage were you seeing at the PTO when the key switch is off?
Thank you all
Take care,
Dean
> On Jul 9, 2023, at 5:29 PM, John Jeno <jjjeno hotmail com> wrote:
>
> When you say “cycle” of the Alltrax, do you mean from on to off to on
> again?
>
> I haven’t opened up the panel to check but I do know there’s no hiccup
> in drive when I cycle the PTO switch.
>
> Sent from my iPhone
>
>> On Jul 9, 2023, at 3:25 PM, John Jeno <jjjeno hotmail com> wrote:
>>
>> One answer.
>> Voltage drops to a few mv with the first auto range flash of the Fluke
>> when the PTO switch is opened.
>>
>> Sent from my iPhone
>>
>>>> On Jul 9, 2023, at 12:46 PM, Dean Stuckmann via Elec-trak <elec-trak
>>>> cosmos phy tufts edu> wrote:
>>>
>>> Hi,
>>> I’m hoping that one of you Alltrax guys can do a quick voltage check
>>> for me. Let me give you a little background.
>>>
>>> I converted my E16 to Alltrax in 2016. The tractor’s drive has always
>>> run perfect and still does. Yesterday I was finishing the mowing a 2
>>> acre vineyard and turned off the mower while repositioning the tractor
>>> but it failed to turn back on. I cycled the PTO switch a few times and
>>> then the mower started. I mowed for about five minutes more and turned
>>> off the deck. This time when I try to start it, it would not go at
>>> all. I noticed that the PTO solenoid was very warm. I could touch it,
>>> but barely. Another thing I noticed is that the main contractor for
>>> the Alltrax would cycle when turning the PTO switch on and off (key
>>> was ON). Is that normal? I never noticed it before but the tractor is
>>> typically already moving when powering on attachments. I just assumed
>>> that I was hearing the PTO solenoid.
>>>
>>> The PTO would restart after a cool down. I assumed that the solenoid
>>> was getting bad so I replaced with a spare that I had. It was was a
>>> used unit that was about 3/8” shorter than the original but looked
>>> almost like new. I checked it with an ohmmeter to make sure that the
>>> unit was cycling correctly and that there were no shorts to the case.
>>> It all checked out so I installed it in the tractor.
>>>
>>> Then I did some voltage checks to test it all out before connecting
>>> the mower back up and noticed something odd. With the PTO off (and
>>> even the key in the Off position) there is between 5-9V between the 2
>>> angled ports on the PTO socket. Voltage is similar with the key on.
>>> Even with the main disconnect open, there is about 5V that diminishes
>>> to zero in a minute or so. My stock I-5 reads zero in these tests, as
>>> I assume that it should.
>>>
>>> I know that the Alltrax has some caps in it and I’m wondering if this
>>> voltage “leak” is coming from that. There is no voltage shown when the
>>> mower is plugged in. Maybe its the norm? I don’t recall doing a
>>> similar test when I originally installed the Alltrax so I can’t
>>> comment on that.
>>>
>>> I'm hoping I can get some answers before I start tearing into all the
>>> wiring. If one of you Alltrax guys could get back to me regarding the
>>> following questions, it would be appreciated.
>>>
>>> Key off, attachments disconnected. Do you see voltage across the 2
>>> angled ports in the socket?
>>> Do you see diminishing voltage when the main disconnect is opened?
>>> Key on, attachments disconnected. Can you feel the Alltrax main
>>> contractor cycle when turning the PTO on and off?
>>>
>>> Thank you all in advance.
>>>
>>> Regards,
>>>
>>> Dean Stuckmann
>>> 5432 County Road U
>>> Newton, WI 53063-9624
>>>
>>> 920-901-2288
>>>
>>>
>>>
>>>
>>>
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