Lego CAT D11 (42131). Control+ app testing step 4. Drive is running in other direction than app indicates. This piece is directly connected to the electric motor, so it seems that I
First look at the LEGO Technic 42131 CAT D11 Bulldozer! - Jay's Brick Blog
App-Controlled Cat® D11 Bulldozer 42131 | Technic™ | Buy online at the Official LEGO® Shop US
LEGO MOC 42131 CAT D11 Bulldozer Upgrade by A_C | Rebrickable - Build with LEGO
LEGO Technic App-Controlled Cat D11 Bulldozer 42131; A True-to-Life Replica of an Iconic Construction Machine (3,854 Pieces) - Walmart.com