1000 or 540 rpm

[fordson]

I serilously suspecting that my PTO runt on 1000 rpm. Is it possible to have a 6 spline shaft and use 1000 rpm? In my manual is says that this can't happen becouse of a spring that only applys then using a 21 spline shaft. Appart from looking at the speed of that PTO shaft when running, is there any other way to be sure that it is 540 rpm I'm using?

 

[alan]

Which model of Zetor do you have?

 

[fordson]

Sorry it's a 8011. But I think I've solved the problem. I removed the bit of the shaft (21 splines) that goes into the thingy just beside the compressor outtake. When I did I seems that it was "hotwired" to run on 1000 rpm's with a 6 splines shaft. I now runs fine and it seems like it's 540 rpm on the PTO.
By the way Happy Midsomer! SKL!