ISO 7653:1985

Road vehicles — Commercial vehicles — Couplings between power take-offs (PTO) and ancillary driven units

Establishes the dimensions of couplings mounted on commercial vehicles, such as hydraulic pumps, etc. Applies to ancillary equipment of commercial vehicles that require a hydraulic or mechanical power system and that take power of the main drive line of the vehicle. Defines two types of couplings: type A – indirect coupling; type B – direct coupling.