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3-6
The pilot pump receive oil from the hydraulic tank. The discharged oil from the pilot pump flows to
the safety solenoid valve through the line filter. The oil is filtered by the line filter. The pilot relief
valve is provided in the pilot pump for limiting the pilot circuit pressure.
The oil filtered by line filter flows remote control valve through safety solenoid valve.
The return oil flow into the hydraulic tank.
1. SUCTION, DELIVERY AND RETURN CIRCUIT
1. SUCTION, DELIVERY AND RETURN CIRCUIT
RIGHT
LEFT
Pu
Pc42
Pb3
Pd41
B2
A2
Pb1
A1
B1
Pa1
T1
V3
Pd2
Pc2
D2
C2
Pc1
D1
C1
P0
DR0
Pd1
Ai
B4
B5
A5
Pa5
Pb5
Pa4
Pb4
C5
D5
D4
C4
Pc41
Pc5
Pd5
Rs
C6
Pd6
Pc6
D6
DR4
P03
P1
P2
P3
Patt
P02
Pn2
Pn1
Pd0
Po5
Puo
P04
DR2
Pc3
Pa21
Pb21
Pb20
Pa20
DR1
DR5
DR3
Pc40
Pd40
PS
PS
Pi1(Pump)
HYDRAULIC TANK
PILOT
PUMP
Dr#, dr#
Pi2(Pump)
A5
P4
P3
P1
A4
A3
A2
A1
(MCV)
PG(S/Motor)
P02(MCV)
P03
(MCV)
Pb4
(MCV)
Pu
(T/Joint)
P
P0(MCV)
T
(3)
(1)
(2)
(4)
(3)
(1)
P
T
P
T
(2)
(4)
a
b
d
f
h
j
c
d1
B e1 D
A
E
F
G
H
J
g
e
e2
SWING
ARM
BUCKET
BOOM
PS
PS
PS
PS
PS
h1
h2
Pd40 Pd41
Pc2
Pd2
SH
Pc3
(3)
(4)
(1)
(2)
P
T
TRAVEL
Pc1
Pd1
Pa1
Pb1
Pb5
Pa5
Pb3
Pc40
Pc41
Pc42
P04
Pa20 Pa21
Pb20 Pb21
LINE FILTER
ARM
CYLINDER
BUCKET
CYLINDER
BOOM
CYLINDER
TURNING
JOINT
TRAVEL MOTOR
SWING MOTOR
P2
SAFETY
SOLENOID
VALVE
TRAVEL
STRAIGHT
TRAVEL
TRAVEL
BOOM 1
SWING
BOOM 2
ARM 1
OPTION B
OPTION C
(DOZER)
ARM
BUCKET
ARM 2
REGEN
A1
PUMP
A2
PUMP
140L3HC02
Summary of Contents for HX140L
Page 12: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Page 209: ...4 5 MEMORANDUM...
Page 694: ...8 68 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Page 734: ...8 108 Assemble plug 2 Plug NPT1 16 11 EA 17 21078TM68 21078TM69 21078TM70 21078TM71...
Page 756: ...8 130 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...