Dk45 Se Delay in 3ph raising

4bama1 · Sep 8, 2013

This weekend it was working great and after 5 hours of cutting deer plots I took a break.The only thing I did while taking a break was turn the MLS valve to slow then back up to high just seeing what it was set on.After an hour or so I got back on the tractor and was raising the 3ph and nothing happened,I tried the raising and lowering and it would do nothing,this went on for a few seconds then the lift raised.
My bucket works fine and my hydraulic top links works fine no loss in power.I was able to finish disking the next day but the delay for the 3ph was about 2 to 3 seconds after I had tried to raise them.The mls valve works fine for lowering and increasing the speed of the 3ph drop.
2011 Dk45se with 390 hrs front end loader..Any help would be appreciated..

Thanks
Chris

4bama1 · Sep 9, 2013

Spoke with my dealers mechanic and he said he has never heard of it before...Guess I will deal with it till my plots are ready and take it in for warranty work...

Coyote machine · Sep 10, 2013

The MLS valve ONLY controls speed of lowering the 3PH. Nothing else, not speed up of the 3PH arms, etc. Is it possible in turning the MLS that you unscrewed the knob/shaft from it's hole in the valve?

IslandTractor · Sep 10, 2013

I vaguely recall this happening to me once and I "fixed" it by moving the draft control to a different position if I recall correctly.

4bama1 · Sep 10, 2013

Coyote machine said:
The MLS valve ONLY controls speed of lowering the 3PH. Nothing else, not speed up of the 3PH arms, etc. Is it possible in turning the MLS that you unscrewed the knob/shaft from it's hole in the valve?

I pulled the seat from the tractor and checked the connection to the valve and it was connected externally,I believe it is connected internally since it works perfect when setting the speed of the arms lowering.
I also tried different draft settings with no difference is delay.

Coyote machine · Sep 10, 2013

It does lift fully correct? How long exactly is the lift delay until it starts? Is it vastly different than it was previously? Are we talking with an implement on the 3PH or bare bones, no load?

4bama1 · Sep 10, 2013

Coyote machine said:
It does lift fully correct? How long exactly is the lift delay until it starts? Is it vastly different than it was previously? Are we talking with an implement on the 3PH or bare bones, no load?

It lifts fully correct,the delay is 2 to 3 seconds with the motor at 2000 rpms,It is vastly different than what it was and this is with a cutter or disk on..when I was switching from cutter to disk the bars still had the delay.

4bama1 · Jan 24, 2014

I thought I would report back what the shop had found.

They said the seal on the hydraulic piston had to be replaced as it was flat on one side and allowing fluid to bypass,when I finally went to pick it up they said that the lift control valve had to be replaced also.They took it out and cleaned it,put it back in and it still did not work properly.Replaced it with a new one and it worked as it should..So the lift or {MLS} valve was part of the problem.

Coyote machine · Jan 24, 2014

Thanks for the follow-up. Glad to hear you were able to get it back to working right. Did they say what caused it to fail? Was the o-ring flat from the get go and then it just started leaking randomly? Did the leak damage the valve? Thanks for any additional insight, in advance.