SECTION 3 HYDRAULIC SYSTEM GROUP 1 HYDRAULIC CIRCUIT 1.
HYDRAULIC CIRCUIT (1/2) ( ,Patt) 2 AU SH PG ( ,Pi1) 1 ( ,P3) 21 ( ,Pi2) 1 2 10 11 8 9 3 [BUCKET IN] ( ,PAk) 2 [S/M MAKE UP] ( ,MU) 3 P5 P4 Rs Pn1 Pn2 DR R/H L/H [BUCKET CONF.] PCbc R/G Ps Ps Dr [OPTION CONF.] PDbc MB MA MB REG REG MA MB MA DR9 MU ( ,RS) 2 P05 Co (CW)VB VA(CCW) 4 4 VA(FW) VB(BW) VB(FW) VA(BW) PDo PCo Do ( ,Cs) 2 ( ,Ds) 2 C A D B Dr P 12 ( ,Atr) 2 ( ,Btr) 2 ( ,Ctl) 2 ( ,Dtl) 2 ( ,A3) 21 [HEAD] Ca ( ,PBa) 2 [ROD] [UNLOCK SIGNAL] DR7 Da [ARM IN] ( ,e) 25 59 PCa PaL [ARM OUT] ( , d ) 25 ( ,PAa2) 2 PDa [SWING PRIORITY] ( ,c) 25 PCsp ( ,PaL) 2 [BOOM UP PILOT] ( ,PAb1) 2 PDb2 ( ,A1) 21 ( ,A1) 21 ( ,A1) 21 ( ,VA) 3 [ROD] [SWING] [ARM] [BUCKET] [BOOM] 26 5 26 6 7 P T P T 26 P T [TRAVEL] ( ,VB) 3 Cs Ds ( ,P02) 2 [HEAD] ( ,P04) 2 [SWING CCW] [SWING CW] ( ,a) 25 ( ,b) 25 DR5 PDs PCs ( ,h) 25 [BOOM UP] (1) (3) (2) (4) (3) (1) (2) (4) (3) (4) (1) (2) ( ,A5) 21 (BOOM PRI.) DR3 P03 ( ,PDb2) 2 1 Main pump 2 Main control valve 3 Swing unit 4 Travel unit 5 RCV lever (LH) 6 RCV lever (RH) 7 RCV pedal 8 Boom cylinder (LH) 9 Boom cylinder (RH) 10 Arm cylinder 11 Bucket cylinder 12 Turning joint 13 Check valve 14 Check valve 15 Hydraulic tank 16 Oil cooler 17 Air breather 18 Return filter w/bypass valve 19 Strainer 20 Drain filter 21 Solenoid valve 22 Pressure sensor 23 Pressure sensor 24 Pressure sensor 25 Shuttle block 26 Last guard filter 27 Lasr guard filter 34 2-EPPR valve 59 Shockless valve A B E D H J F G ( ,PAtr) 2 ( ,PDtl) 2 [LH-FW] [RH-FW] ( ,D) 12 ( ,B) 12 [RH-BW] ( ,3) 7 PCtl Dtl Ctl 25 ( ,PBtr) 2 [LH-BW] ( ,PCtl) 2 [RH-BW] ( ,SH) 3 [RH-FW] ( ,4) 7 PDtl Patt ( ,PCs) 2 a b d e f g h j c h1 e2 PS 24 2 24 d1 h2 PS PS ( ,PBk) 2 24 24 ( ,PBb1) 2 PS 24 24 PS DR1 P01 [SWING CCW] PS ( ,PDa) 2 ( ,PCa) [ARM IN] ( ,PAk) 2 [BUCKET OUT] ( ,PAb1) 2 [BOOM DOWN] ( ,P4) 21 Ptr PS ( ,PCsp) 2 [SWING PRIORITY] 24 34 PS [ARM OUT] [BUCKET IN] [BOOM UP] A1 A2 P1 P2 ( ,A2) 21 Pu ( ,PDs) 2 P T Psv 23 [SWING CW] FC1 FC2 ( ,P2) 21 a1 A1 a4 A2 PS a2 22 ( ,P2) 21 PS ( ,P) 7 ( ,P03) 2 ( ,P) 12 ( ,Pu) 2 ( ,P) 6 Pi2 21 A5 A1 A2 A3 ( ,P) 5 27 PS P3 P4 ( ,P) 34 ( ,P01) 2 ( ,PG) 3 a3 PG 23 ( ,Pn1) 2 P2 P1 B3 Dr3 A3 T ( ,Psv) 1 ( ,A3) 1 ( ,P1) 21 30Q9-47100-00 1OF2 3-1 BC1 NR BC2 V2 Cck NRV1 Cco BkR CoR AkR DoR LCo LCk1 LCk2 CaR DaR OPTION OPTION BUCKET BbkR CRa ARM LCa LCa2 ARM2 ( ,PDa) 2 PAa2 (ARM OUT) Ccb LCar SWING P/R LCbk BbR PBrc(ARM REGEN CUT) BOOM2 ARM REGEN SWING AbR CRb BOOM LCs LCb BtR AtR (RIGHT) TRAVEL (LEFT) TRAVEL TS M RV 22 PS E 19 Dr B1