Well, after planning, the doing was a simple turning job
the guard rings are very small.
seals are simple o-rings
big thread on the lid
Fits perfect
To lock the trough in open state for working on the hydraulics are at the big ones simple Us wich will hook on the back plate.
So do i
Works
Here you can see the last part of the cylinder with the flange. both from stainless to be able to weld. All other parts are from aluminium.
the original have a maximum tilt angle of 53°.
almost
later, after some test and measuring, i'm able to raise the size of the guard-rings. that brings a lot more stability.