STRUCTURE AND FUNCTION STEERING TRAIN STEERING TRAIN Structure and function The steering is fully hydraulic. The oil sent by the brake/steer pump (2) mounted on the PTO at the front of the engine (1) flows via the prior- ity valve (3) to the steering valve (4). From here it is passed through swivel joint (7) to steering cylinder (5). The steering cylinder then extends or retracts to move the tie-rod and steer the ma- chine. In the event of failure of the power supply the machine can be steered by emergency steer- ing. The steering valve acts as a pump to send oil to the steering cylinder. 10-29