5
14 16
9
2
3
KENR5940
October 2007
6
FLUID POWER SYMBOLS
BASIC COMPONENT SYMBOLS
21
MAIN AUX.
PUMP or MOTOR
20
BC1
TWO POSITION
ONE POSITION
HYDRAULIC
PNEUMATIC
ENERGY TRIANGLES
ATTACHMENT
LINE RESTRICTION
VARIABLE and PRESSURE
COMPENSATED
VALVE PORTS
TWO-WAY
THREE POSITION
PUMP: VARIABLE and
PRESSURE COMPENSATED
2-SECTION PUMP
VALVES
VALVE ENVELOPES
1
15
LINE RESTRICTION
(FIXED)
RESTRICTION
PRESSURE
COMPENSATION
LINE RESTRICTION
(VARIABLE)
SPRING
(ADJUSTABLE)
VARIABILITY
BC2
CONTROL VALVES
SPRING
FLUID CONDITIONER
FOUR-WAY
THREE-WAY
CONTROL VALVES
CHECK VALVES
AB
AB
P T
SHIFTED POSITION
P T
NORMAL POSITION
INFINITE POSITION
SHUTTLE
SPRING
LOADED
BASIC
SYMBOL
PILOT
CONTROLLED
FLUID STORAGE RESERVOIRS
VENTED
8
5
9
10
12 13
11
2
CP/CS56, CP/CS64 and CP/CS74
Vibratory Compactor
Hydraulic System
7
3
14 16
6
21
CP/CS56:
C5P1-UP
FCP1-UP
C5S1-UP
FCS1-UP
7
CP/CS64:
C7F1-UP
P7F1-UP
C6P1-UP
C6S1-UP
RETURN ABOVE FLUID LEVEL
PRESSURIZED
RETURN BELOW FLUID LEVEL
MEASUREMENT
PRESSURE
ROTATING SHAFTS
FLOW
TEMPERATURE
UNIDIRECTIONAL
BIDIRECTIONAL
COMBINATION CONTROLS
SOLENOID
or MANUAL
SOLENOID
CP/CS74:
C8F1-UP
P8F1-UP
C8P1-UP
C8S1-UP
SERVO
SOLENOID and
PILOT or MANUAL
SOLENOID
and PILOT
DETENT
THERMAL
MANUAL CONTROL SYMBOLS
PUSH-PULL LEVER
GENERAL MANUAL
MANUAL SHUTOFF
PUSH BUTTON
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
PEDAL
SPRING
REMOTE SUPPLY PRESSURE
15
EXTERNAL RETURN
BC2
ACCUMULATORS
SPRING LOADED
CROSSING AND JOINING LINES
LINES CROSSING
GAS CHARGED
FIXED
DISPLACEMENT
1 12 13
VARIABLE DISPLACEMENT
NON-COMPENSATED
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
UNIDIRECTIONAL
BIDIRECTIONAL
BIDIRECTIONAL
DOUBLE ACTING
INTERNAL PASSAGEWAYS
FLOW IN ONE
DIRECTION
Description
10
MB2
11
SOS
3
2
15
Cylinder Gp - Hydraulic (Steering)
Machine
Location
Schematic
Location
NOTE A
1
E-3, F-3
(Front)
(Rear)
180-3813
2
3
C-2
268-8018
4
D-1
(Axle Propel)
123-5260
5
B-4
(Drum Propel)
123-5259
6
B-6
7
F-6
8
D-1
Filter Gp - Oil (Hydraulic)
Motor Gp - Fan
Motor Gp - Piston
Part
Number
(Vibratory) Note B
136-8869
(Vibratory) Note C
212-7030
Pump Gp - Gear (2-Section, Steering and Fan)
279-0480
Pump Gp - Piston
(Axle Propel)
270-3948
9
D-3
(Drum Propel)
270-3947
10
D-5
(Vibratory, Fixed Frequency Vibratory Control) Note B
(Vibratory, Fixed Frequency Vibratory Control) Note C
(Vibratory, Varibable Frequency Vibratory Control) Note B
(Vibratory, Varibable Frequency Vibratory Control) Note C
270-3949
270-3951
270-3950
270-3952
11
Strainer - Suction (Hydraulic Tank)
250-2783
12
A-3
Tank Gp - Hydraulic
264-4514
13
A-2
B-5
TWO
POSITION
THREE
POSITION
INFINITE
POSITIONING
PARALLEL
FLOW
CROSS
FLOW
Electrical Symbols Table
Hydraulic Symbols (Electrical)
G
Transducer
(Fluid)
Transducer
(Gas / Air)
M
Generator
Electric Motor
D-6
E-6
Valve Gp - Bypass (Hydraulic Oil Cooler)
162-2453
14
Valve Gp - Flow Control (HMU Steering)
295-6641
15
F-2
Valve Gp - Shift Pressure
276-2609
16
C-4
Pressure Switch
(Adjustable)
Pressure Switch
Electrical Wire
Temperature Switch
Electrical Symbols (Electrical)
Attachment - Blade Circuit
Cylinder Gp - Hydraulic (Blade)
NOTE A
20
F-2
Valve Gp - Control (Blade )
211-1656
21
F-1
T
Note A: Refer to Parts Manual for your specific machine.
Pressure
Symbol
Note B: For CS/CP56 models.
CP
8
Note C: For CS/CP64 and CS/CP74 models.
Temperature
Symbol
Level
Symbol
Flow
Symbol
Wire Number Identification Codes
FRAME AS.
Electrical Schematic Example
Tap Locations
Pressure, Sampling, and Sensor
Tap
Number
MA3
G3
MA2
Description
Hydraulic Schematic Example
Current Standard
Current Standard
Schematic
Location
BC1
Blade Cylinder Extend Pressure
F-2
BC2
Blade Cylinder Retract Pressure
F-2
CP
Charge Pump Pressure
D-1
G2
Drum Propel Pump Charge Relief Valve Pressure
C-5
G3
Axle Propel Pump Charge Relieg Valve Pressure
C-4
MA1
Vibratory Pump: Reverse Pressure
D-5
MA2
Drum Propel Pump : Reverse Pressure
C-4
MA3
Axle Propel Pump: Reverse Pressure
C-3
MB1
Vibratory Pump: Forward Pressure
D-5
MB2
Drum Propel Pump: Forward Pressure
D-4
MB3
Axle Propel pump: Forward Pressure
D-3
SOS
Oil Sampling Port
C-1
Harness identification code
This example indicates
wire 135 in harness "AG".
Wire
Circuit Number
Identification
Wire Color
325-AG135 PK-14
325-PK
Circuit Identification
Number
Wire Color
Wire Gauge
Previous Standard
Wire Color
Wire
325-PK-14
G2
B
1
TAP LOCATIONS VARIOUS COMPONENTS
FLOW ALLOWED IN
EITHER DIRECTION
Printed in U.S.A.
Component Locations
MB3
SINGLE ACTING
Circuit Number
Identification
A
Wire Gauge
(EXAMPLE VALVE)
(Dimensions: 34 inches x 24 inches)
ENGINE AR
16
LINES JOINING
© 2007 Caterpillar
All Rights Reserved
MACHINE COMPONENT LOCATIONS
9
HYDRAULIC AND PNEUMATIC CYLINDERS
HYDRAULIC MOTORS
HYDRAULIC PUMPS
INTERNAL
SUPPLY PRESSURE
COMPLETE
16 Page,
BC1
SIMPLIFIED
KENR5940
20
INTERNAL RETURN
6
4
5
3
1
2
BLADE VALVE
B
VIB
MOTOR
F
BLADE
CYLINDER
15
136-8869 CS/CP56
212-7030 CS/CP64 CS/CP74
STEERING HMU
T2
T
VIB
CONTROL
A
1
R
B
E
10
VARIABLE FREQUENCY VIB CONTROL
VIB
CONTROL
9
DRUM PUMP
11
EZ
CONTROL
B
BLADE CIRCUIT DETAIL
P
VIBRATORY PUMP
A
TO
CHARGE
FILTER
T
21
E
T2
20
L
270-3950 CS/CP56
270-3952 CS/CP64 CS/CP74
R
MA1
PS
A
270-3947
MB1
B
MB3
MB2
HW
CONTROL
R T1
PS
P
Fe
Fa
CP
HW
CONTROL
AXLE PUMP
B R T1
PS
P
ENGINE
TIMING CASE
DRIVE
279-0480
270-3948
Fe
Fa
FAN
B
8
STEER
4
D
D
PASSAGE
PLUGGED
DIESEL
ENGINE
2300 RPM
HIGH IDLE,
2200 RPM
RATED
PASSAGE
PLUGGED
FAN MOTOR
268-8018
T1
X1
(Dimensions: 34 inches x 24 inches)
C
16 Page, Color 2,
KENR5940
F
BC2
EP
CONTROL
R
FROM
FAN
MOTOR
A
295-6641
A
T
P
B
STEER CYLINDERS
7
211-1656
BC1
G
X2
T2
X1
G
X2
MH
S
A
T2
X1
G
X2
MH
S
A
G2
270-3949 CS/CP56
270-3951 CS/CP64 CS/CP74
MA2
G3
FRONT
CHARGE
FILTER
REAR
CHARGE
FILTER
180-3813
180-3813
MA3
VIBRATORY PUMP
FIXED FREQUENCY VIB CONTROL
OIL
COOLER
X
DRUM
MOTOR
B
286-9045
3
SHIFT
VALVE
16
A
SOS
276-2609
X
P
SEE
DETAIL
B
LINE PATTERNS
TC
Pressure Line
AXLE
BRAKES
Pilot / Load Sensing Pressure
Drain / Return Lines
Component Group
14
THERMAL BYPASS
RETURN MANIFOLD
12
162-2453
A
G T
CALLOUTS
250-2783
123-5260
T
Air Line
SUCTION
STRAINER
AXLE
MOTOR
G
YY
Taps (Pressure, Sampling,Sensor) by letter
52
Components by number
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
STEERING PUMP OUTPUT
AXLE AND DRUM PUMP OUTPUT
5
FAN PUMP OUTPUT
VIBRATORY PUMP OUTPUT
SUPPLY LINE
DRAIN / RETURN LINE
AXLE PROPEL CONTROL CIRCUIT
DRUM PROPEL CONTROL OUTPUT
STEERING CIRCUIT
VIBRATORY PUMP CONTROL CIRCUIT
A
SHIFT CONTROL
BLADE CYLINDER & CONTROL CIRCUIT
6
THIS SCHEMATIC IS FOR THE CP/CS56 , CP/CS64, AND CP/CS74 VIBRATORY COMPACTOR
HYDRAULIC TANK
264-4514
MEDIA #: KENR5940-00
PART #: 262-0881 CHG 02
13
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
6
B
Attachment
R
DRUM
BRAKE
C
HYD TANK
123-5259
B
T
2
OPTIONAL
BLADE
VALVE
CASE
DRAIN
5
4
3
2
1
A