1 Main pump 2 Fan & brake pump 3 Main control valve 4 Control unit 5 Boom lowering valve 6 Control block 7 Remote control lever(EH, FNR) 8 Remote control lever(HYD) 9 Pressure sensor 10 Fan motor 11 Directional valve 12 Hyd oil cooler 13 Safety valve 14 Boom cylinder 15 Bucket cylinder 16 Steering cylinder 17 Steering unit 18 Line check valve 19 Accumulator LS1 P1 T1 M LS2 S1 41 2 4 3 1 B A B2 A2 B1 A1 B3 A3 42 A B 30 a3 A1 A2 T/M 11 b3 29 PARKING P T 40 P1 T1 P2 T2 28 PS PS 28 A B G1 P B3 G2 PS 27 26 26 S3 T2 12 S2 B2 B1 S1 15 dump rollback T1 PP 2 L S1 b2 a2 25 6-2 down up LH RH 1 3 4 2 P T 1.1 2.1 PS 28 B 9 PS 14 31 B.D/F B.U CRAWD DUMP 33 34 PS 9 a1 5 b1 35 D Pr EH RCV HYD RCV HYD RCV 32 8 A1 T 3 P3 LS3 DLS T3 P1 EH RCV TPr 13 X1 1 L L1 S1 24 23 10bar PS B1 37 9 2.
HYDRAULIC CIRCUIT (HL940A, HL940A XT) 2. HYDRAULIC CIRCUIT (HL940A, HL940A XT) 7 20 16 E/G T P ( ) : 2spool RH LH 17 Control Unit / Electro Hydraulic, Joystick steering 6(4) 3(2) 5(3) 2(1) x To MCV Boom up B/Down Bucket In Dump Aux Up Aux Down R L AUX1 BUCKET BOOM EH20 EH19 EH22 EH21 a3 b3 a2 b2 a1 b1 19 LS T P STD : (17) LS ----------------------- DLS (3) J-Steering : (17) LS -- LS2 (22) LS1 -- DLS (3) 18 39 S P P1 M T 7 16 CR CL LS2 L R A LS1 38 PS M EH17 EH18 4 1 T T 36 4 Cut Off EH Valve SOL P 6 22 TE Electronics PE P 21 PVE 40 b3 P3 LS3 DLS T3