My pneumatic motor pump thing just broke while making a 42080 alternative model. The model worked perfectly fine (I just finished) but when I played with it for a bit the thing
Review: 42080 Forest Harvester | Brickset: LEGO set guide and database
Lego Technic 42080 Machine Forest - New And Sealed 5702016116984 | eBay
Log and load with the powerful LEGO Technic Forest Machine (42080) - YouTube