MF-135 RML-17 Diverter valve

I have a MF-135 with a diverter valve on the top
of hydraulic cover where spool valve is usualy
installed to operate a loader with internal pump.

On the valve there is a part number RML-17
made in Canada. There are two quick connects
when pushing the lever forward the pressure is
present on the front outlet when pushing the lever
backwards the pump seems to be overloaded and no
pressure in both outlets. If running an hydraulic
driven motor pushing lever forward oil get out
by the front outliet and returns by the rear port and the hyd motor runs perfectly. If the lever is pulled backwards hyd motor stops and pump seems to be overloaded.

I tough that this setup provided double action
operation but no.

There is a pipe plug upper rear of the valve
but I do'nt have fittings to plumb it for a test.

Somebody had worked with this kind of valve ?

Thanks in advance

Bart On

Bart, I mucked up the first one. hope this sends ok. My friends M F 135 UK has what looks like you discribed. Up is 3 PT and forward is loader. (loader is slow ). Hope this helps some. Ray

Thanks for taking the time to post the very good picture.

Valve is exactly the one on my 135
Plumbed as I expected front port is oil pressure
to the loader...lower back port is oil return.
so I will need a spool valve to operate a double
action cylinder. I know it will slow due to the
internal pump low output volume.

Many thanks helped me a lot.

Bart On

Thanks for your reply...

I made some test again today as you mentionned
center position is for the 3PT there is 2 port
at rear of the valve and one port front of the valve. Upper rear port was pluged. I took the
fitting on the lower back port and installed it on
the upper back port.

Result:
Lever back = oil pressure upper back port
Lever center = 3pt
lever front = oil pressure front port
The lower back port seems to be a oil return port.

Conclusion: as you mentionned I need an hydraulic
valve. This tractor is equipped with hyd pressure
control to be used with some implements designed to tranfer weight on rear of tractor. This diverter valve may be part of the weight transfer
setup who knows. I have all imaginable manuals here there is no information on this system.

Thanks again !

Bart On