Sơ đồ thủy lực máy đào CAT 345 - P2
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©
2002 Caterpillar
All Rights Reserved
Printed in U.S.A.
RENR3756-02
August 2002
345B Series II Excavator
Hydraulic System
345B II:
AMA1-UP
ALB1-UP
ALD1-UP
AMD1-UP
AKJ1-UP
ALL1-UP
AMJ1-UP
AMN1-UP
AYR1-UP
AGS1-UP
ALT1-UP
AKX1-UP
PG
PSA
T-OUT
DR6
DR5
DR4
Pi8
Pi3
Pi2
Pi1
PAC
DR3
DR2
DR1
Pi5
JPi
C/V
PEPU
P-IN
AL4
BL3 BL2
BL1
BL4
AL3
AL2
AL1
X
PTA
PSW
PiH
BR1
BR2
AR3
AR4
AR1
AR2
BR3
Y
f03780
36
18
17
30
29 28
27
26
24
25
23
22 20
13
31
37
38
12
43
49
48
47
46
50
14
Main Control Valve
Pilot Oil Manifold
21
51
Travel Motor (Right)
Item
Component
STANDARD COMPONENTS
Component
No.
Item
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
26
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
Left Swing Motor
Right Swing Motor
Travel Motor (Left)
Stick Cylinder
Travel Brake Valve (Left)
Travel Brake Valve (Right)
Bucket Cylinder
Boom Cylinder
Swivel
Boom Raise Pressure Switch
Stick Drift Reduction Valve
Line Relief Valve (Stick Cyliner Rod End)
Main Control Valve
Implement/Swing Pressure Switch
Travel Pressure Switch
Line Relief Valve (Boom Cylinder Head End)
Boom Drift Reduction Valve
Pilot Control Valve (Travel)
Boom II Control Valve
Stick I Control Valve
Swing Control Valve
Left Travel Control Valve
Straight Travel Control Valve
Main Relief Valve
Right Travel Control Valve
Attachment Control Valve
Bucket Control Valve
Boom I Control Valve
Stick II Control Valve
Line Relief Valve (Stick Cylinder Head End)
Valve (Regeneration)
Valve (Regeneration and Cut)
Pressure Control Valve
Logic Valve
Line Relief Valve (Bucket Cylinder Head End)
Line Relief Valve (Bucket Cylinder Rod End)
Line Relief Valve (Boom Cylinder Rod End)
Negative Flow Control Relief Valve
Pilot Filter
Hydraulic Activation Control Valve
Accumulator
Drain Filter
Solenoid Valve (Fine Control)
Solenoid Valve (Travel Speed)
Solenoid Valve (Swing)
Pilot Relief Valve
Pilot Oil Manifold
Upper Pump
Lower Pump
Automatic Travel Speed Change Valve
Cooling Pump
Pilot Pump
Slow Return Check Valve
Bypass Check Valve
Return Filter
Oil Cooler
Radiator
Fan Motor
Hydraulic Tank
Cooling Pump Relief Valve
Hydraulic Schematic
MAIN CONNNECTOR LINE
PILOT LINE
DRAIN LINE
165-9624
Screen
B A
DR1
MU
SWING
MOTOR
`
PG1
SWING
MOTOR
MU
DR2
AB
PG2 PG3
(COOLANT)
B
STICK
SWING
BOOMBUCKET
JR1
JR3
JR4
JR2
JRT
JRP
JL2
JL4
JL1
JL3
JLT
JLP
AR1
BR1
AL2BL2
X
DR
HL
dL5
aL5
BL4
bL4
AL3
BL3aL3
bL2
AL1
BL1
aL1
PSW
aR1
aR2
AR2
BR2
bR3
aR4
Y
HR
AR4
R1
dSW
bR2 bR1 PLPR
Pp1
bL1
PAT
aL2 bL3 aL4
BOOM(1)
BUCKETATCH
TRAVEL(R)
PiL
aR3dR4
SA5
SA4
SA3
SA2
SA1
SB5 SB4
SB3
SB2
SB1
SP
(B)
BPi
(F)
(B)
(R)
(L)
SWING
(F)
L
L1
S
ST
(DOWN)
(OPEN)
(FWD)
(FWD)
(L)
(IN)
(UP)
(CLOSE)
(UP)
(IN,OUT,DOWN)
dR5
(BACK)
(BACK)
(R)
AR3
R1
S
R2
X1
X2
M3
X3
A1
M1
A2
M2
R1
A3
T1
RIGHT
L'L'
(OUT)
BR3
R2
B' A'
S2
BR
R3
BR
MB
MA
MB
A'B'
T1
LEFT
APi2
A'
PP2
Pi8
PSA
PG
B'
STICK(1)
STICK(2)
BOOM(2)
TRAVEL(L)
TOUT
DR1DR2DR3
B
A
DR4
DR5
DR6
(SLOW)
Pi3
(TRAVEL)
(SWING)
PIN
PEU
(PUMP)
Pi1
Pi2C/V
TRACK
JPi
Pi5
(RELIEF)
T2
PTA
X
T2
MA
(OIL)
TT
TP
TRAVEL(R)
PAC
TRAVEL(L)
TLA1
BDr
TLA2 TRA2
TRA1
B
X
PSL
A
X
APi
ADr
AL4
5
1
2
3
6
4
7
10
19
12
13
20
31
32
33
21
34
35
22
23
24
25
14
15
16
40
42
57
58
60
61
64
62
59
45
63
46
47
48
49
50
51
43
65
44
41
52
53
54
56
55
8
99
26
27
28
29
36
37
38
30
17
18
39
Pilot Control Valve (Stick/Swing)
Pilot Control Valve (Boom/Bucket)
Proportional Reducing Valve (Powershift)
11
f03779
39
SERIES II
3
55
54
6
56
32
53
4 7
45
41
59
63
10
9
60 61
14
1
2
19
5
8
