Download - CAT 345 B AGS 01 Up Hydraulic Schematic
INTERACTIVE SCHEMATIC
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Hydraulic System - Attachment345B Excavator
ALB1-UPAGS1-UP4SS1-UP9GS1-UPDCW1-UP
©2015 Caterpillar, All Rights Reserved Printed in U.S.A.
SENR1980-01July 2015
Combined Function - Two Pump Flow
COMPONENT LOCATION
Description PartNumber
SchematicLocation
MachineLocation
Switch As - Pressure (Pilot Hydraulic Oil) 106-0179 C-2 1Valve Gp - Auxiliary Manifold 122-4850 A-4 2Valve Gp - Control 9Q-9728 B-3 3Valve Gp - Flow Control 4I-7836 B-7 4Valve Gp - Manual 144-2145 E-3 5Valve Gp - Relief 6E-5234 E-3 6Valve Gp - Relief (Line) 177-2708 C-4 7Valve Gp - Shuttle 8J-6875 B-3 8Valve Gp - Shuttle (Flow Control) 8J-6875 B-7 9
FLUID POWER SYMBOLS
ONE POSITION TWO POSITION THREE POSITION
VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY THREE-WAY FOUR-WAY
SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION(FIXED)
2-SECTION PUMP
MAIN AUX.
SPRING(ADJUSTABLE)
VARIABILITY LINE RESTRICTION(VARIABLE)
LINE RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURECOMPENSATION
PUMP: VARIABLE andPRESSURE COMPENSATED
ENERGY TRIANGLESHYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOIDor MANUAL
SOLENOIDand PILOT
SOLENOID and PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID SERVO THERMAL DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWOPOSITION
INFINITEPOSITIONING
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
THREEPOSITION
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P TSHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOTCONTROLLED
ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit IdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example Hydraulic Schematic Example
325-PK
Wire ColorCircuit Number Identification
B A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator
Electrical WirePressure Switch
MElectric Motor
Pressure Switch (Adjustable)
Temperature Switch
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
T
Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
ATTACHMENT: COMBINED FUNCTION - TWO PUMP FLOW
SCHEMATIC PART NUMBER: 149-7572, CHANGE: 08, VERSION: -
THIS SCHEMATIC IS FOR THE 345B EXCAVATOR HYDRAULIC SYSTEM
MEDIA NUMBER: SENR1980-01
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
A
B
C
D
E
1234567
A
B
C
D
E
1234567
LINE PATTERNS
(52) VALVE GP - CONTROL138-1234
Callout Number(Machine Location from
Component LocationsTable)
ComponentName
Part Number
MAIN CONNNECTOR LINE
PILOT LINE
DRAIN LINE
B A
DR1
MU
SWINGMOTOR
PG1
SWINGMOTOR
MU
DR2
AB
3GP2GP
(COOLANT)
B
STICK SWING
BOOMBUCKET
JR1JR3JR4
JR2
JRTJRP
JL2 JL4JL1JL3AB
JLTJLP
AR1BR1 AL2BL2
X
C D
A E B
DR
HL
dL5
aL5BL4bL4AL3BL3aL3bL2AL1BL1aL1PSWaR1aR2AR2BR2bR3aR4
Y
HR
AR4
R1
dSW LP1Rb2Rb PR Pp1 bL1 PAT aL2 bL3 aL4
BOOM(1)
BUCKETATCHTRAVEL(R)
PiLaR3dR4
SA5 SA4 SA3 SA2 SA1
SB5 SB4 SB3 SB2 SB1 SP
(B)
BPi
(F)(B)(R) (L)
SWING
(F)
LL1S
(DOWN)(OPEN)(FWD)(FWD)(L)(IN)(UP)
(CLOSE) (UP) (IN,OUT,DOWN)
dR5 (BACK)(BACK)(R)
AR3
R1
S
R2X1
X2
M3X3A1M1
A2M2
R1
A3
T1
RIGHT
L'L'
(OUT)
BR3
R2
'A'B
BR
R3
BR
MB MAMB
A'B'
T1
LEFT
APi2
A'
PP2
Pi8
PSA
PG
B'
STICK(1)
STICK(2)
(1) SWITCH ASPRESSURE
PILOT HYDRAULIC OIL106-0179
BOOM(2)
TRAVEL(L)
TOUTDR1DR2DR3
B A
DR4
DR5DR6
(SLOW)
Pi3
(TRAVEL) (SWING)
PINPEU
(PUMP)
Pi1Pi2C/V
TRACK
JPiPi5
(RELIEF)
T2
PTA
X
T2
MA
(OIL)
TT TP
TRAVEL(R)
PAC
TRAVEL(L)
(9) VALVE GPSHUTTLE
(FLOW CONTROL)8J-6875
(4) VALVE GPFLOW CONTROL
4I-7836
TLA1
BDr
2ART2ALT TRA1
B
X
PSL
A
X
APi
ADr
AL4
T
S3S2S1
P
SINGLEACTION
DOUBLEACTION
DOUBLE
SINGLEDOUBLE
SINGLE
FOR SINGLE
(6) VALVE GPRELIEF6E-5234
(7) VALVE GPRELIEF (LINE)
177-2708
(8) VALVE GPSHUTTLE8J-6875(3) VALVE GP
CONTROL9Q-9728
(5) VALVE GPMANUAL144-2145
ACTION
(2) VALVE GPAUXILIARY MANIFOLD
122-4850
MACHINE COMPONENT LOCATIONS
9
8
76
54
3
2
1