JR1JR3
JR2JR4
JRTJRP
JL4 JL2JL1JL3
JLTJLP
Pp3
Pp3
T T
ABBA
AR1
BR1
ST
AL2BL2
X
DR
R2
HL
dL5
aL5
aL4
AL3BL3aL3
aL2
AL1BL1aL1PSWaR1aR2AR2BR2
aR3
dR4
Y
HR
AR4
R1
dSW bR2 bR1 dST1 PLPR PP bL1 PAT bL2 bL3 PiB bL4PiLbR3aR4
SA5 SA4 SA3SA2
SA1
SB5 SB4 SB3 SB2 SB1SP
BP1 BT
BPi
BP3
AL4
AP1
AT
J
R1
S
R2
X1
X2
M3
X3
A1
M1
A2
M2
R1
A3
AP2
DR
2
PAC
PS
A
DR
3
Pi3DR
1
TOU
T
PG
PG
PIN
JPi
Pi5
Pi8 C/V
PE
U
DR
4
DR
5
Pi2
Pi1DR
6
R3
R4
R3AR3
PTA
MU
DR
TT
AB
TP
TLA2
BDr
TLA1 TRA1
TRA2
PSL
APiBL4
BR3
ADr BP2
PILOT LINE
DRAIN LINE
Hydraulic Schematic
MAIN CONNECTOR LINE
31 11 18
4
1
10
2 528 29
8
34 37
3 6
118-4203
7
1
ItemComponent
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
STANDARD COMPONENTS
ComponentNo.ItemNo.27
28
29
30
31
32
33
34
35
36
37
38
39
Swing Motor
Travel Motor (Left) Travel Motor (Right)
Travel Brake Valve (Left)
Travel Brake Valve (Right)
Bucket Cylinder
Stick Drift Reduction Valve
Swivel
Main Control Valve
Implement/Swing Pressure Switch
Travel Pressure Switch
Boom Drift Reduction Valve
Main Relief Valve
Boom Raise Pressure Switch
Pilot Control Valve (Travel)
Pilot Control Valve (Swing/Stick)
Solenoid Valve (Travel Speed)
Solenoid Valve (Fine Control)
Upper Pump
Lower Pump
Pilot Pump
21
22
25
26
Solenoid Valve (Swing Priority)
Pilot Control Valve (Boom/Bucket)24
40
41
42
43
44
45
46
47
48
49
50
51
Stick II Control Valve
Boom I Control Valve
Bucket Control Valve
Attachment Control Valve
Right Travel Control Valve
Straight Travel Control Valve
Left Travel Control Valve
Stick I Control Valve Boom II Control Valve
Line Relief Valve (Bucket Cylinder Head End)
Line Relief Valve (Stick Cylinder Head End)
Stick Cylinder
Accumulator
Hydraulic Activation Control Valve Pilot Oil Manifold
Pilot Relief Valve
Slow Return Check Valve
Bypass Check Valve
Return Filter
Hydraulic Tank
Pilot Filter
Line Relief Valve (Bucket Cylinder Rod End)
Proportional Reducing Valve (Power Shift)
Pressure Sensor
Case Drain Filter
Hydraulic Oil Cooler
52
53 Line Relief Valve (Stick Cylinder Rod End)
Line Relief Valve (Boom Cylinder Rod End)
Line Relief Valve (Boom Cylinder Head End)
18
20
23
Boom Cylinders
4
12
5
3
6
10
9
52
47
49 46
45
44
15
4342 41
48
51
40
39
50
30
31
23
24
27
222120
19
26
37
363533
32
25
18
17
1112 13
78
14
52
17
31
16
28
29
38
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