3 Working hydraulics Upper discharge chute valve combination / discharge flap with pressure accumulator 3254
Description of function Pre-loaded working hydraulics system
The pressurised oil from port P1 is under pressure due to non-return valve (707) (see overall circuit diagram). All working hydraulics functions except for the Raise front attachment function receive their oil pressure from the pre-loaded working hydraulics system. This system is equipped with the working hydraulics pre-load accumulator (501). When the accumulator pre-load drops to approx. 170 bar, the working hydraulics / Autopilot oil pressure sensor (B5) actuates the master valve (Y77) under time control via the Contour module (A11) and the Intake controller module (A14). Danger! Pre-loaded energy accumulators (spring, accumulator, hydraulic cylinder). Death or serious injury. – Relieve the oil pressure before starting service work.To do this, slacken off the balance screw (617).
617
401975
62
000 293 892 1 - SYS-H JAGUAR 493 - 03/06
