the electromagnet solinoid valve for the high flow engagemant top of the hydraulic pump is leaking continiusly from the oring of the thread.it happens when the machine is working the wheel cutter w24 if i remember.the hydraulic oils tampeture increases very fast if this helps and idont know if the oparator that changed the oring several times is puting the right dimension.any ideas that might help?the power of the wheelwhen it cuts doesnt look very strong it keeps stoping and needs pushing the button to reingaged the wheel again from what ive been told.have a nice year to all of you from greece.