DK45 PTO Issue

xtmartin · Jun 12, 2003

I have a DK45 with 200 hours on it. I have an occasional problem with the PTO and wonder if any of you might have some ideas. Sometimes the problem occurs when I'm mowing with my 5' bush hog. If I get a patch of thick growth and want to gear down to a lower gear, sometimes the PTO does not come back up to speed after re-accelerating. The PTO just kind of slowly spins -- sometimes it even slows down if I increase engine RPM. Turning the PTO switch on and off doesn't correct the problem. I have to shut down the tractor, wait about ten seconds, restart and re-engage the PTO and it starts working again. I've seen the same problem with my spray unit when I slow down or stop in the field and then start going again. I have had the tractor in for service and the dealer has no idea what the problem might be. They replaced the PTO clutch a few months ago, but the problem persists. I don't think it's the mercury switch (for the auto-PTO) because shutting down and restarting, without changing my hitch height or draft, corrects the problem. Any thoughts?

tractorhill · Jun 12, 2003

CHECK THE PRIOPITY VALVE PART NUMBER T4620-34002
THAT SOMETIMES GIVE THE PROBLEM

JerryG · Jun 12, 2003

xtmartin,
Try what Tractorhill said. If the pto clutch is hydraulic activated, the valve may not be giving enough pressure to lock the clutch disc's.

Anonymous Poster · Jun 12, 2003

Yeah that sounds likely. Also are all your hydro filters, suction screen, etc clean ?

jhixf564 · Jun 13, 2003

I have a DK50 with about 150 hours and my auto pto does not work anymore. If I turn it to auto and hit the button nothing happens,but if I turn it to manual it comes right on. I noticed it about 35 hours ago. Its does not bother me that much except something on my tractor is not working properly.
Does any body have any ideas?

thanks
justin