Group 5 Combined Operation - Hyundai r35z-7 Workshop Manual

GROUP 5 COMBINED OPERATION

1. OUTLINE
TRAVEL MOTOR-RH
R/G
a1
P2(FW) P1(BW)
BOOM CYL
BUCKET CYL
Pa10
Pb8'
BUCKET
MAIN CONTROL VALVE
T2
Pb10
B/SWING
ACC
A1 A2 A2
LH RH
1 2
P
Pa2
Pb2
T
The oil from the P1, P2, P3 pump flows through the neutral oil passage, bypass oil passage and
confluence oil passage in the main control valve. Then the oil goes to each actuator and operates
them. Check valves and orifices are located on these oil passage in the main control valve. These
control the oil from the main pumps so as to correspond to the operation of each actuator and
smooth the combined operation.
INDEPENDENT TRAVEL SYSTEM
This independent travel system for straight travel is provided in the main control valve.
If any actuator(s) on P1 and P2 pump side is operated when traveling, the travel selector spool is
moved to the selected side by the pilot oil pressure.
Consequently, the pressure oil from P1 and P2 pump are supplied to the right and left travel motor
and oil from P3 pump flows into the other operated actuator.
This keeps the straight travel.
TRAVEL MOTOR-LH
R/H L/H
R/G
Ps Ps
a2
a2
T1
T1 T2 T2 P2(BW) P1(FW)
TURNING JOINT
Pa8
Pa7 P1 P2
Dr2
BOOM
TRAVEL-RH TRAVEL-LH
Pb7 Dr1
Pb8
TRAVEL
DOZER
L/H R/H DOWN UP
2
1 4 3 1 2
Pb6 Pa6 Pb7 Pa7 Pb1 Pa1
SWING ARM
2WAY OPTION
RH
LH OUT IN
1 3 2 4
1 2
Pa3 Pb5
Pa4 Pb3
Pb4
Pa5
a1
DOZER CYL ARM CYL
Pa6 Pa4
Pa5
ARM PTO
Pb5
Pb6 Pb4
BUCKET BOOM
IN OUT UP DOWN
3 1 2 4
Pb10 Pb8
Pa10
Pa8
3-22
SWING MOTOR
DB PB
"R2"
"R1"
STOP VALVES
GA B(CCW) A(CW) GB
Mu
Pa3
P3 Pa2
Dr1
BOOM
SWING
SWING
T1
Pb3 Pb2
Pp1
BU
PILOT PUMP
MAIN PUMP
R1 A1 A2 A4
S1 S1
B/SWING CYL
Pa1
DOZER
Pb1
A3
LINE FILTER
R35Z73HC30