2. HYDRAULIC CIRCUIT (HL955, HL955XTD) 2.
HYDRAULIC CIRCUIT (HL955, HL955XTD) LH 20 Control unit 19 8 CL ELECTRONICS 2 4 1 3 EF P 18 L P S P 36 37 PS P2 M T 35 M 1 Main pump 2 Fan & brake pump 3 Main control valve 4 Fan motor 5 Directional valve 6 Oil cooler 7 Check valve 8 Controller (opt) 9 Boom lowering valve 10 Remote control block(EH) 11 FNR remote control lever 12 Remote control valve(HYD) 13 Safety valve 14 Suttle valve 15 Boom cylinder 16 Bucket cylinder 17 Steering cylinder 18 Steering unit 19 Steering valve (EHPS) 20 Joystick steering (opt) 21 Accumulator 22 Orifice 23 Pressure sensor 24 Brake valve 25 Pressure switch 26 Cut off valve 27 Accumulator 28 Accumulator 29 Pressure sensor 30 Hydraulic tank 31 Air breather 32 Return filter 33 By pass valve 34 Strainer 35 Pump motor (opt) 36 Check block (opt) 37 Pressure sensor (opt) 38 Check valve (opt) 39 Ride control velve (opt) 40 Accunulator (opt) 41 Quick coupler cylinder (opt) 42 Solenoid valve (opt) 6-2 15 16 LH RH 23 PS 23 PS a1 a2 a3 9 P A1 B1 A2 B2 A3 B3 3 LS Floating Boom Aux.
Dump Bucket Down Pst Rollback Up T 7 RH 12 21 b1 b2 b3 B.D/F B.U B.I DUMP AUX 22 AUX2 BUCKET BOOM Joystick 40 11 11' Sp. T 39 CR T P 8 Control unit 1 3 4 2 1.1 2.1 (Electro-Hydraulic & Joysick steering) RL 10 EH18 EH17 EH20 EH19 EH22 EH21 T Ba /D2 own B/b up2 Bb /i1 Da um1A pb ux2 dow Tn MAub Cx2 u P n o B 4 1 6(4) 3(2) 5(3) 2(1) ( ) :
2 Spool A Ps FRONT /F B.U B.I DUMP AUX T P 3 4 2 1.1 2.1 b2 b2 b2 B/up Aux down Aux u b1 a1 B/in Dump To MC FRONT Ts LS T a3 b3 a1 7 7 1 R S1 13 X1 X2 14 X3 T 1 38 23PS X1 X2 B1 B2 S1 L2 L1 S2 L4L3 To MCV b1 a2 b2 A1 3 ' P1 T 31 32 3 34 30 P1 T1 A1 25 P2 AXLE T2 A2 27 27 24 28 29 REAR S1 B1 B2 S2 S3 26 PS 41 G1 Parking P B3 29 PS G2 29 T/M 42 2 4 PS PS PP T1 T2 3 1 6 3 2 5 D 4 B P A A B B T S1 L 757F6WE01 S1 L2 3 B S1 a1 a2 A1 B1 p t A2 B2 Floating oom Dum Rollback Bucke Up Down B