First look at the LEGO Technic 42131 CAT D11 Bulldozer! - Jay's Brick Blog
REVIEW] 42131 - CAT D11T Bulldozer - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
LEGO MOC 42131 CAT D11 Bulldozer Upgrade by A_C | Rebrickable - Build with LEGO
Cat D11-bulldozer (42131) control+ test your build step 3 rotation direction. App says clockwise, mine is counter-clockwise. Other side rotates clockwise. Should mine rotate clockwise as pictured in app, and is it
LEGO® Technic review: 42131 Cat D11T Bulldozer | New Elementary: LEGO® parts, sets and techniques
App-Controlled Cat® D11 Bulldozer 42131 | Technic™ | Buy online at the Official LEGO® Shop US