switching hoses

In most cases, the hoses can be reversed, however it should be verified by a Mitsubishi service facility.
Switching the hoses does reverse the operation of the valve, but sometimes there are additional valves (in the circuit) for safety or load control. Reversing the hoses may affect those safety controls. If the excavator came with a schematic (hydraulic plumbing diagram), it would indicate those valves. If you have a schematic for the excavator, most hydraulic shops could read it and tell you if switching the hoses would be ok.

What you are looking for is more commonly referred to as pattern change device, you can approach your local dealer or get what you need from a third party.If you need more information contact excatech.com