RENR3643-02
16 Page
RENR3643-02
July 2006
365B Material Handler
Hydraulic System
365B MH:
CTY1-402
©
2006 Caterpillar
All Rights Reserved
Printed in U.S.A.
Pilot Manifold
PIN
Pi3
Pi2
Pi1
PSA3
PSA2
PSA1
PSA4
DR3
DR2 DR1
TOUT
PG
Pi6
Pi5
Pi4
DR6
DR5
DR4
PAC
68
71
66 67
72
f02669
27
26
28
29
31
15
16
55
19
20
21
34
36
38
39
575654
50
49
44
17
Main Control Valve
RENR3643-02
16 Page, Color 2
THIS SCHEMATIC IS FOR THE _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
PART #: XXX-XXXX
Components are shown installed on a fully operable machine with the key and engine
off and transmission shifter in neutral.
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling,Sensor) by letter
Components by number
YY
52
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
ARROW PATTERNS
Taps (Pressure, Sampling, Sensor) by letter
Components by number
Connections by letter
AccuGrade Options
YY
1
AA
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
MAIN PUMP OUTPUT
TBD 1 PUMP OUTPUT (NON STEERING)
STEERING CIRCUIT
PILOT PUMP OUTPUT
TBD 3 PUMP OUTPUT
SCAVENGE PUMP
TBD
TBD
TBD
DRAIN / BRAKE COOLING (LARGE OFF-HIGHWAY TRUCKS)
TBD 4 PUMP OUTPUT
SUPPLY LINE
TBD
TBD
TBD
TBD
TBD 2 PUMP OUTPUT
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
P
P
R
T1
L'
L'
B' A'
BR
BR
MB
MA
M
MB
A'B'
LEFT
PR
PG
E
F
L2
D
L1
Qmax Qmin
T1
A'
D
F
E
P
T
M2
M1
B'
B
P1
P2
REV
FWD FWD
A
T2
T2
(PS)
REV
BL2
AL2
B
LL1S
PSA3
PSA2
PSA1
PG
PIN
TOUT
DR1
DR2
DR3
Pi5
PAC
Pi3
Pi2
Pi1
Pi4
Pi6
M1
T2T1
R
S
AS
PSA4
DR6
M
G
aR3
aL3
bR3
bL3
aL1
aR1
bL4
aL4
bR1
PF
PR
bL1
R1
D1
D2
R2
BR1
R2
AR1
BL1
AL1
AR3
BR3
AL3
BL3
RIGHT
S1
DR5
BL4
dR1
bL2
QmaxQmin
B
M2
M2g
A
LS2
LS2g
PS2g
PS2
M2g'
M1g'
PS1g
PS1
aL2
R1
DR4
LS1g
LS1
SA1
M1g
M1
P2
P1
M
MA
QminQmax
B
A
CLOSE
PD
P2
Dr
X
OPEN
SA2
OUT
IN
C/V
Dr1
Pi1
TOOL ROTATOR
B
A
LS
LS
pA
pB
185
210
LS
210
M
B
P
T
A
Pp
X
T
Dr
C
A
P
A2
A
C
Dr
T
TT
A1
X
Pp
T
Pi1
P
P
Dr1
C/V
T
Tool
1
2
3
4
5
6
7
8
9
10
11
10
13
15 16 17
18
20
21
19
25
27
2826
30
29
31 32 33 34 36 37 3835 39
43
44
45
49 50
51
52
53 54 55 56 57
58
59
60
61 63 64 65
62
66 67 68
69
70
71
72
73
74 75 76
77
78
79
80
81
82
8483
Hydraulic Schematic
MAIN CONNNECTOR LINE
PILOT LINE
DRAIN LINE
201-8213 CH03
47
48
1
2
17 78
76
84838277
54
86
79 80 81
7
11
18
3
60
58
14
12
14
86
85
THIS SCHEMATIC IS FOR THE 365B Material Handler
PART #: 201-8213 ch03
Components are shown installed on a fully operable machine with the key and engine
off and transmission shifter in neutral.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations
Item
No.
Component
Item
No.
Component
1 Stick Cylinder 47 Line Relief Valve (Work Tool)
2 Boom Cylinder 48 Line Relief Valve (Work Tool)
3 Boom Lowering Control Valve 49 Attachment Proportional Valve
4 Travel Counterbalance Valve (Right) 50 Boom Proportional Valve (Head End)
5 Travel Motor (Right) 51 Line Relief Valve (Boom Cylinder Rod End)
6 Travel Motor (Left) 52 Boom Drift Reduction Valve
7 Swing Motor (Right) 53 Line Relief Valve (Stick Cylinder Head End)
8 Travel Counterbalance Valve (Left) 54 Stick Proportional Valve (Out)
9 Swing Control Valve 55 Line Relief Valve (Stick Cylinder Rod End)
10 Swing Parking brake Solenoid 56 Left Travel Proportional Valve (Reverse)
11 Swing Motor (Left) 57 Right Travel Proportional Valve (Reverse)
12 Proportional Reducing Valve (Stick Lowering) 58 Work Tool Rotate Control Valve
13 Proportional Reducing Valve (Boom Lowering) 59 Rotate Pump
14 Stick Lowering Control Valve 60 Rotate Pilot Control Valve
15 Attachment Proportional Valve 61 Pilot Filter
16 Boom Proportional Valve (Rod End) 62 Bypass Check Valve
17 Main Control Valve 63 Return Filter
18 Swivel 64 Back Pressure Valve
19 Stick Proportional Valve (In) 65 Cooling Fan Motor
20 Left Travel Proportional Valve (Frwd) 66 Travel Speed Solenoid
21 Right Travel Proportional Valve (Frwd) 67 Proportional Reducing Valve
25 Signal Duplication Valve (Stick Side) 68 Pilot Oil Manifold
26 Solenoid Valve (Neutral Bypass) 69 Pilot Relief Valve
27 Neutral Flow Control Valve 70 Pilot Valve (Hydraulic Activation)
28 Differential Pressure Relief Valve (Rear) 71 Solenoid Valve (Hydraulic Activation)
29 Flow Compensator Valve (Boom) 72 Accumulator
30 Work Tool Control Valve 73 Swing Pump Pressure Sensor
31 Flow Compensator Valve (Boom) 74 Drain Filter
32 Boom Control Valve 75 Return Filter
33 Stick Control Valve 76 Hydraulic Tank
34 Flow Compensator Valve (Stick) 77 Oil Cooler
35 Left Travel Control Valve 78 Drain Filter
36 Flow Compensator Valve (Left Travel) 79 Front Pump
37 Right Travel Control Valve 80 Charged Filter
38 Flow Compensator Valve (Right Travel) 81 Rear Pump
39 Differential Pressure Relief Valve (Front) 82 Pilot Pump
43 Signal Relief Valve (Travel) 83 Cooling Pump
44
High/Low Relief Solenoid (Stick Side)
84 Swing Pump
45
Signal Relief Valve (Stick Side)
85 Check Valve (Stick Lowering)
46
Load Signal Control Valve
86 Check Valve (Stick Lowering)
47
Line Relief Valve (Work Tool)
Standard Components
