[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: (ET) Alltrax and PTO

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
>
>
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: 
> <http://cosmos.phy.tufts.edu/mhonarc/elec-trak/attachments/20230709/b78621f0/attachment.htm>
> _______________________________________________
> Elec-trak mailing list
> Elec-trak cosmos phy tufts edu
> https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak