STRUCTURE AND FUNCTION FINAL DRIVE . 8 10 8 10 B B 6 4 3 4 3 7 7 A 9 2 3 9 2 3 RKS01040 Brake The hydraulic motor is equipped with a negative brake. When the motor is at a standstill, or when the operator applies the brake, the braking piston (1) is pushed to the left ( ) by the force of the springs (2). The friction disk (3), which has been integrated with the cylinder block by means of semicircular grooves, is com- pressed between steel disks (4) and (5), which are integrated with the housing, and is thus blocked. The drive shaft (6) can therefore no longer turn. When the motor is running and the operator disengages the brake, oil is sent under pressure to the chamber .
The force exerted by the oil is greater than the force of the springs (2) and the piston (1) is therefore pushed to the right ( ) thus releasing the friction disk (3) and permitting rotation of the cylinder block (7) (and also of the drive shaft). A 3 1 2 5 A 3 1 2 5 4 4 7 7 6 6 RKS01060 10-9 SK818-5 SK820-5 turbo