| 180 / | HD | MOTOR VEHICLES |
| 337 | DF | TRANSMISSION MECHANISM {17} |
| 348 | DF | .~ Final drive axle movable {5} |
| 349 | ![]() | .~.~ Rigid axle {4} |
| 350 | DF | .~.~.~> Belt or chain drive {1} |
| 352 | DF | .~.~.~> With lateral support between the differential or axle housing and the vehicle frame |
| 353 | DF | .~.~.~> With sprung differential {2} |
| 356 | DF | .~.~.~> And final gear drive |