We designed a compact bin arm that works with the LEGO 4432 Garbage Truck set! Convert your existing 4432 Garbage Truck into an automated rear-loader style with a bin arm. : r/lego
Review: 7991 Reycle Truck - LEGO Town - Eurobricks Forums
Lego 7991 Garbage Truck : Toys & Games
LEGO City 7991 Recycle Truck (2007) reviewed! - YouTube