HS120V DRIVING & CHASSIS - DRIVING SYSTEM 1.4 PRINCIPLE OF POWER TRANSFER & SPECIFICATIONS OF COMPONENTS 1.4.1 POWER TRANSFER SYSTEM G5:9HM:=FGH 8F=J=B;7 756=B 9B;=B9 9@97HF=7GMGH9A =B89L Pump Housing Pump housing Coupling Coupling HST Pump HST pump Motor (RH) Motor-RH Soft Shift Valve Soft shift valve Motor-LH Motor (LH) LF1W303A HST GROUP [1 SPEED TYPE] HST pump Soft shift valve LF1W304C When the HST pump receives a forward drive signal input from the pilot line, oil travels through the red line and passes through the piston in the motor, rotating the motor shaft. After passing through the piston, the oil returns to the HST pump.
3 -5 GMW-0035 12bar 15bar B(FW)X L P swre its cs hure R A X3 B X4 MB A X3 B X4 MB RH Reverse RH Forward DAC 22bar G1 Y Soft shift valve T 16.5bar Ø0.5 T 3 2SPD Working Driving U1 U2 Parking solenoid Pilot lock valve valve MB Pressure switch B X4 A X3 T R B LH Forward MA A E/G Flushing Regulator valve valve Driving motor(LH) A(FW) 12bar Parking brake 15bar A X3 T R B LH Reverse Driving pump R B 15bar B(BW) X