9. COMBINED BUCKET AND TRAVEL OPERATION When the bucket and travel functions are operated, simultaneously the bucket spool and travel spools in the main control valve are moved to the functional position by the pilot oil pressure from the remote control valve, and the straight travel spool is pushed to the left by the oil pressure from pilot pump. The oil from the front pump flows into the bucket cylinder through the bucket spool via the confluence oil passage. The oil from the rear pump flows into the travel motors through the RH travel spool of the right control valve and the LH travel spool of the left control valve via the straight travel spool of the control valve.
The bucket is operated and the machine travels straight. 3-30 R/G R/G Ps Ps Pm1 Pm2 Pm2 Pm1 T1,T2 T1,T2 P1 P2 P2 P1 Pn2 Pn1 CK1 Rs CA P DR BD NRV1 BC COMP.
NRV2 Pk B5 S/Motor DB C5 A5 D5 Pc5 Pb5 Pd5 OPTION-B BUCKET CK2 Pa5 (RG)DS rR SG ARGSH PC c4 D 4 PbB 44 Go DR3 41 REGENERATIION CUT PG Pa4 Pd40 BREAKER ARM1 OPTION-A Au Pc40 Pc4 2 Dr(R7) Pc3 Pb3 DR2 Pd41 Pa2 1 BOOM2 ARM2 GB GA V3 B2 B(CW) Mu A(CCW) C2 A2 D2 Pb21 P Pc d2 DR1 Pb20 2 Pa20 SWING BOOM1 P02 Patt C1 B1 Pc1 D1 A1 Pb1 Pd1 Pa1 TRAVEL P01 DR0 (LEFT) T (RR IA GV HE TL ) Ptr S TRTR AA VI EG LHT MRV P1 P2 T1 Pu SWING ARM BUCKET BOOM TRAVEL Psv (1) (3) (2) (4) (3) (1) (2) (4) SH a4 A1 A2 (2) (1) (4) (3) A B D E G F H J Pa1 Pb1 Pd1 Pc1 a1 a2 Pc2 Pd2 Pc4 0 Pa5 Pb5 Pa2 0 Pb2 0 P T Dr#,dr#,R# Pd4 0 (P Pm um1 p) (P Pm um2 p) ( T /P Jok int) A1 A2 ACC A1 (Fl,MCV) Pi1 Pm1 (Fr,MCV) Pi2 Pm2 A2 P4 PG(S/Motor) M P3 Po1(MCV) P2 a3 Dr T T P1 B1 B3 A3 T(dr2) D21073HS25