Hyd oil overheating on rear discharge

[valtraman]

I was using my new to me rear discharge spreader yesterday & it’s over heating my back end oil. Spreader has the valve knob to shut floor speed down or up then spool in constant. I had pipes in same spool side by side or should I have one in flow & other in free flow return . My tractor only has one spool I can alter flow on should I try it in that one?

 

[Pistonbroke]

I was using my new to me rear discharge spreader yesterday & it’s over heating my back end oil. Spreader has the valve knob to shut floor speed down or up then spool in constant. I had pipes in same spool side by side or should I have one in flow & other in free flow return . My tractor only has one spool I can alter flow on should I try it in that one?

Our valtra only has one adjustable spool,I shut that down for the spreader ( marshall) and it doesn't heat the oil up at all

 

[yellowbelly]

I had pipes in same spool side by side or should I have one in flow & other in free flow return .

Free flow return will let oil back into tractor without having to go through a restrictor, so should help keep it cooler.

 

[KB6930]

I was using my new to me rear discharge spreader yesterday & it’s over heating my back end oil. Spreader has the valve knob to shut floor speed down or up then spool in constant. I had pipes in same spool side by side or should I have one in flow & other in free flow return . My tractor only has one spool I can alter flow on should I try it in that one?

Open the spreader right up and use the tractor control to restrict the floor speed

 

[DrDunc]

Oil is overheating because you're trying to pump far more flow through the valve than is necessary to power the floor

Plumping into a free flow return instead of through the spool valve will help, but it's not fixing the problem

You need to reduce the tractor flow, regardless of whether it's the spreader valve or tractor valve (with the spreader valve wide open) that you use to adjust the floor speed

My old k430 deutz only shoves 80l/min thorough the spools, but it still needs turned down to half that or the oil cooks

 

[valtraman]

Thanks all . I will plumb it into spool that I can shut down & try that

 

[Tractor Tim]

Of that doesn't help we took the 1/2 inch fittings off on the pressure side of the spool and fitted 3/4 to allow more unrestricted flow,also put the return in free flow. This was on hydraulic drill fan though

 

[Timbo]

Open the spreader right up and use the tractor control to restrict the floor speed

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ do exactly this.

 

[Farmeraduk]

Thanks! Just swapped from the flow control on the bunning to the tractor and it sounds so much better. This forum helps me all the time.

 

[valtraman]

I’ve adjusted my flow down on spool & also sounds much better did a few loads no issues