PTO continuously turns

Pharmere

New member

Equipment
Kubota M6040
May 25, 2020
8
0
1
El Dorado, Arkansas
I tried to search for this problem but apparently PTO is too short or common of a word.
I have a 6040 and the PTO is always turning. It’s not extremely powerful when I have the PTO lever in the off position but it’s strong enough to slowly turn a bush hog. Is this a simple fix or should I just live with it?
 

Palmettokat

Active member

Equipment
M6800, B2710, L6060, Volvo 5 ton excavator and implements.
Apr 21, 2020
251
53
28
South Carolina
PTO is short for "power take off". No you do not want to have it slowly rotating, a good recipe for disaster.
I would say you have either clutch or shifter linkage that needs to be slightly adjusted. First I would check the linkage to be sure there is no trash holding it from fully shifting into the discount mode. Sure others who know better than I will help much more.
 

Dave_eng

Well-known member
Lifetime Member

Equipment
M7040, Nuffield 465
Oct 6, 2012
5,257
1,047
113
Williamstown Ontario Canada
The pto lever is connected to a hydraulic valve by a cable.

The only thing I would suggest you do is to disconnect the cable and see if the hydraulic valve's lever is moving to the zero pressure position which is when the pto clutch should be fully disengaged.

forum m6040 pto.jpg


After that the diagnosis and repair is best left to Kubota. The pto clutch operates at a reduced hydraulic pressure and is supplied from the power steering valve. My point being that it is more complicated than you would expect and hence easier to screw up.

Dave
 

North Idaho Wolfman

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Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
34,106
9,295
113
Sandpoint, ID
On some models it's not that uncommon for the PTO to "free" spin, it's just a viscosity spin.
Newer models have solved this with a PTO brake, without looking it up not sure if yours has the brake or not.

How you can tell is that it's just a free spin is take a 2x4 up against the disconnected PTO output shaft out of the tractor and try and stop it from spinning, if you can stop it then it's a viscosity spin, if you can't then it's still connected and you need to get it fixed.