M7040 Hydraulic question...

[samofsweden]

Today I bought a "crane-trailer" for my M7040 (pics will come later). The crane needs so called "free return to tank" to work. I haven't found anything back on the M7040 except where you fill hydraulic oil, which could work as a free return. I know it can be an issue to use the oil filler hole as a return, return oil can create air bubbles.
Thanks for help!
/Sam

 

[J_J]

You should be able to tee into the return hose anywhere you find it.

If you just have to, you can bore a hole in the filler cap. It has been done before.