GROUP 1 HYDRAULIC CIRCUIT GROUP 1 HYDRAULIC CIRCUIT SECTION 3 HYDRAULIC SYSTEM SECTION 3 HYDRAULIC SYSTEM 1 Main pump 2 Main control valve 3-1 Swing motor 3-2 Swing motor 4 Travel motor 5 RCV lever (LH) 6 RCV lever (RH) 7 RCV pedal 8 Boom cylinder (LH) 9 Boom cylinder (RH) 10 Arm cylinder 22 30 30 9 8 E PS Pi1 T(dr3) V2 11 10 T(dr2) E V2 Pi1 31 pa10 B9 A9 pb9 pa9 B8 A8 pb8 pa8 DR2 pc2 A7 B7 pb7 pa7 B6 A6 pb6 pa6 2 2 Travel(RH) (Pi2,Shuttle) (Pi1,Suttle) Arm 2 Bucket Boom 1 ps1 ps2 T3 T1 T2 T4 Arm 1 Option Boom 2 Swing pb4 A4 pa4 pb3 B3 B1 pc6 pa11 pc1 DR1 B5 A5 pb5 pa5 PO B4 (34,2) B B1 A A1 pc7 DR7 (34,1) A3 B2 pa3 A2 pb2 DR3 pa2 A1 PG SH PB B(CCW) TRAVEL (FW-LH) (BW-LH) (FW-RH) (BW-RH) A1 (43) A3 (43) P PG(S/Motor) PP(MCV) pb1 pa1 (3) (4) (3,F) (1,G) A1 A2 FC1 FC2 3-1 3-2 38 36 C A2 A3 41 24 26 G.P PS P T P T P T pb6 pa6 (1) (2) (2,D) (4,E) (3,B) (1,A) (Boom Down) A1 A2 A5 P4 P3 P2 P1 TRAVEL 1/2 SPEED POWER BOOST SAFETY LEVER A(CW) 35 37-1 37-2 B P2 T 7 26 6 26 5 26 T DB M PA A1 SWING ARM BUCKET BOOM (2,H) (4,J) h2 42 PH (MCV) G2 G1 P2(BW) P1(FW) A B D E F G H J PS PS c d1 h1 24 24 24 24 pb2 pa9 pa7 (Boom Up) Pk (T/Joint) PG R/G 12 P1 f g a b d e e2 PS pb8 pa8 (Bucket In) (Bucket OUT) ITEM PORT ITEM PORT J1 J3 J4 J2 D J E H SH PB PA B(CCW) LH RH R/G Dr Pk B A D C P Dr PS (Arm In) FROM TO 2 4 2 4 M1 M2 M3 M4 50 25 21 T(dr1) 4 4 Pi Pi ( ,A5) 21 P T (1) (2) Pb4 pb5 (Arm Out) 5 6 50 Dr G2 G1 26 34 Pa4 (Swing CCW) pa2 (Swing CW) J1J2J3 J4 ISO M1M2M3M4 A(CW) P2(FW) P1(BW) DB M 25 48 SECTION 3 HYDRAULIC SYSTEM GROUP 1 HYDRAULIC CIRCUIT 10 T(dr2) E V2 Pi1 31 (Pi1,Suttle) (Pi2,Shuttle) 2 ps1 T3 T1 T2 T4 ps2 (Pi1,Suttle) (Pi2,Shuttle) 2 ps1 T3 T1 T2 T4 ps2 pa11 DR1 pc1 B5 A5 pb5 Arm 1 pa5 PO B4 (34,2) A4 B B1 pb4 A A1 pa4 Option (34,1) DR7 pc7 A3 pb3 B3 pa3 Boom 2 B2 A2 pb2 Swing DR3 pa2 B1 pc6 A1 pb1 Travel(LH) pa1 pr1 PT P1 24PS 28 14 13 IN D R #,dr# 16 Dr OUT pa11 DR1 pc1 B5 A5 Arm 1 2 pa10 B9 A9 PO B4 A4 B1 pb4 A1 pa4 Option DR7 pc7 A3 B3 pb9 Arm 2 pa9 B8 A8 pb8 Bucket pa8 DR2 pc2 A7 B7 pa3 Boom 2 B2 A2 pb2 Swing DR3 pa2 B1 pc6 A1 pb1 Travel(LH) pa1 pr1 PT P1 24PS PP PA PH pb7 Boom 1 pa7 B6 A6 pb6 Travel(RH) pa6 P3 P2 24 PS 22 23 a1 a2 PS Psv1 PS PS Psv2 a A1 A2 a4 1 26 Pi1 PS 23 M 27 OUT IN Dr1,r2 B1 D r3,r4 5 26 20 19