MF-135 removing IPTO releif valve

HI

I want to clean or change the hydraulic filter
my MF-135 has IPTO and the IPTO pump releif valve is just over the hyd filter. Do you know if the releif valve can be removed without splitting the tractor.

When I try to loose the fitting (shining nut) the whole releif valve turns..and come close to the hyd filter. Do you know it this fitting can be turned alone or if it is part of the valve. I did'nt apply too much force I'm afraid to break something.

Thanks in advance.

The IPTO relief valve cannot be removed by loosing the nut..I do'nt know why MF did not provided a removable fitting in order to remove the valve to permit accenss to the hyd pump filter. However...The hyd pump filter can be partially unscrewed until it toutch under the releif valve and may be cleaned with a little solid wire with curved end...that done the bottom of the differencial can be rinced with diesel fuel or kerosene and evavuated by the drain plug.

Retight the filter and reinstall the locking wire.

I done that on my 135 few years ago and it seems to be good.

Good luck

Joe Ferguson