Loader control valve allowing oil back to reservoir? Does the loader still work?
What model is the Deutz?
How is your loader block plumbed? Ideally you need to fit the loader block in the line between the trailer brake valve if fitted and the tractor’s own spool block. The feed then should be from pump to TBV, then on to the loader spool (usually the L/H connection marked P) then the other connection (carry over) should be piped back to the tractor spool where you took off the original feed pipe. The port marked T on loader should go back to tank to dump any excess oil the PRV doesn’t like!!!
on the massey loader feed is taken before to spool valves, and the return put back there, the other return is direct into the back end. the oil then goes through the spools then down to hydraulics valve.
pipe 59 is your main return (this is where oil circles when loader not being used) so will be quite important in correct place, it might be internally pipes even though you think it straight into back end?View attachment 679846
Pump intersected to the pressure side of the spool, out of the side to the back end. So it still should be feeding the circuit just via the block now. I haven’t taken the dump to where they have. I’ve taken it to the back. It dumps in the back end still just another place. Should I re route this to where they have in the image? Could it be low oil?
pipe 59 is your main return (this is where oil circles when loader not being used) so will be quite important in correct place, it might be internally pipes even though you think it straight into back end?
if you pressure loader such as pushing it on floor while working hydraulics do they work?
And the flow direction through the loader valve is correct?
See have you a flow of oil out the pipe marked T (pipe number 64)?
The loader block may well be letting oil back to the tank?