This is a servo-cylinder cover from a Komatsu pump (like this
one). The control didn't function and was impossible to adjust. The
pictures clearly indicate the problem - one of the many plugs got loose
and ended up smashed against the cover by the very servo-cylinder it
originated from. I had to open a different (larger and standard-er)
thread in the mother passage of the deserter plug, and although the
steel is hard to machine, it's doable if done with care.
