Hyundai r35z-7 Workshop Manual page 121

8. TRAVEL FORWARD AND REVERSE OPERATION
TRAVEL MOTOR-RH
R/G
a1
P2(FW)
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
When the travel levers are pushed forward or reverse position, the travel spools in the main control
valve are moved to the forward or reverse travel position by pilot pressure oil. The oil from the both
pumps flows into the main control valve and then goes to the both travel motors through the turning
joint. The return oil from both travel motors returns to the hydraulic oil tank through the turning joint
and the travel spools in the main control valve. When this happens, the machine moves to the
forward or reverse.
TRAVEL MOTOR-LH
R/H L/H
R/G
Ps Ps
a2 a2
P1(BW) T1 T2 T2 T1 P2(BW)
P1(FW)
TURNING JOINT
Pa8
P1 P2
Pa7
Dr2
BOOM TRAVEL-RH TRAVEL-LH
Pb7 Dr1
Pb8
TRAVEL DOZER
L/H R/H
DOWN UP
2 1 4 3 1 2
Pb1 Pa1
Pb6 Pa6 Pb7 Pa7
2WAY OPTION SWING ARM
LH RH OUT IN
1 1 3 2 4
2
Pa3
Pa4 Pb3 Pb5
Pb4
Pa5
a1
DOZER CYL
ARM CYL
Pa6 Pa5 Pa4
ARM PTO
Pb6 Pb4
Pb5
BUCKET BOOM
IN OUT UP DOWN
3 1 2 4
Pb10 Pa10 Pb8
Pa8
3-18
SWING MOTOR
DB PB
"R2"
"R1"
STOP VALVES
GA B(CCW) A(CW) GB
Mu
P3 Pa3 Pa2
Dr1
BOOM
SWING SWING
T1
Pb3 Pb2
BU Pp1
PILOT PUMP
MAIN PUMP
A1 A2
R1 A4
S1 S1
B/SWING CYL
Pa1
DOZER
Pb1
A3
LINE FILTER
R35Z73HC17