LEGO 42131 Cat D11 Bulldozer Set Parts Inventory and Instructions - LEGO Reference Guide
technic - Correct axle rotation of partially built LEGO Cat D11 Bulldozer ( 42131)? - Bricks
Brick Shine - Light Kit for LEGO® Technic 42131 CAT D11 Bulldozer | Goodstuff Australia
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
LEGO Technic App-Controlled Cat D11 Bulldozer 42131 Building Set | eBay