uenr3237uenr3237 sis
DESCRIPTION
Uenr3237uenr3237 SisTRANSCRIPT
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INTERACTIVE SCHEMATIC
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SchematicMachine Views
ComponentConnector
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Features
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Bookmarks X
EC-C3EC-C2 E-C60
EC-C1
E-C61
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KEYS
“CTRL” / “-”“CTRL” / “0” (zero)“SPACEBAR” (hold down)
Find “CTRL” / “F”
PressureSwitch
TemperatureSwitch
LevelSwitch
FlowSwitch Circuit Breaker
T
ELECTRICAL SYMBOLS
Spring(Adjustable)
Variability
FluidConditioner
Pumpor Motor
BASIC HYDRAULICCOMPONENT SYMBOLS
SCHEMATIC SYMBOLS AND DEFINITIONS
HYDRAULIC SYMBOLS - ELECTRICAL
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator ElectricalWire
Pressure Switch
MElectricMotor
Pressure Switch (Adjustable)
TemperatureSwitch
PressureSwitch
TemperatureSwitch
LevelSwitch
FlowSwitch Circuit Breaker
T
ELECTRICAL SYMBOLS
Spring
ControlValves
Restriction Line Restriction(Fixed)
2-SectionPump
MAIN AUX.
Spring(Adjustable)
Variability
Line Restriction(Variable)
PressureCompensation
Pump: Variable andPressure Compensated
Hydraulic PneumaticEnergy Triangles
FluidConditioner
Attachment
Pumpor Motor
BASIC HYDRAULICCOMPONENT SYMBOLS
Line RestrictionVariable and Pressure
Compensated
Vented Pressurized Return Above Fluid Level Return Below Fluid Level
FLUID STORAGE RESERVOIRS
Pressure Temperature Flow
MEASUREMENT
Unidirectional Bidirectional
ROTATING SHAFTS
One Position Two Position Three Position
Two-way Three-Way Four-Way
ENVELOPES
PORTS
CONTROL
BasicSymbol
SpringLoaded
Normal Position
A B
P T
A B
P TShifted Position Infinite Position
Shuttle PilotControlled
VALVES
CHECK
Solenoidor Manual
Solenoidand Pilot
Solenoid and Pilot or Manual
Solenoid Servo Thermal Detent
COMBINATION CONTROLS
T
Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.
Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicatesthat the component has screw terminals and a wire can be disconnected from it.
Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component.
Ground (Wired): This indicates that the component is connected to a grounded wire.The grounded wire is fastened to the machine.
Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.
Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the contacts ofa normally open reed switch; it opens the contacts of a normally closed reed switch.
Sender:
A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure.Its resistance changes to give an indication to the gauge of the temperature or pressure.
Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity.It has a coil that makes an electromagnet when current flows through it.The electromagnet can open or close the switch part of the relay.
Solenoid: A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it.The electromagnet can open or close a valve or move a piece of metal that can do work.
Magnetic Latch Solenoid: An electrical component that is activated by electricity and held latched by a permanent magnet. It has two coils (latch and unlatch) that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.
BASIC ELECTRICAL COMPONENT SYMBOLS
Push-pull Lever PedalGeneral Manual Push Button SpringManual Shutoff
MANUAL CONTROL
External Return Internal Return
Simplified CompleteInternal
Supply Pressure
RELEASED PRESSURE
REMOTE SUPPLY PRESSURE
PILOT CONTROL
Spring Loaded Gas Charged
ACCUMULATORS
Crossing Joining
LINES
Double ActingSingle Acting
CYLINDERSUnidirectional
Bidirectional
FIXED DISPLACEMENT
VARIABLE DISPLACEMENTNON- COMPENSATED
PUMPS
Unidirectional
Bidirectional
Unidirectional
Bidirectional
FIXED DISPLACEMENT
VARIABLE DISPLACEMENTNON- COMPENSATED
MOTORS
Unidirectional
Bidirectional
TwoPosition
InfinitePositioning
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
ThreePosition
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
1
2
AG-C4111-7898
L-C123E-5179
9X-1123 ComponentPart Number
Pin or Socket Number
Part Number: forConnector Plug
Harness Identification Letter(s): (A, B, C, AA, AB, AC, ...)
Plug
325-AG135 PK-14
Wire ColorWire Gauge
Receptacle
1
12
2Sure-Seal connector: Typical representationof a Sure-Seal connector. The plug and receptacle contain both pins and sockets.
Deutsch connector: Typical representationof a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
Fuse (5 Amps)
5A
Harness identification code:This example indicates wire group 325,
wire 135 in harness "AG".
L-C123E-5179
Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).
Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...)
HARNESS AND WIRE SYMBOLS
UENR3237April 2012
420F and 430F Backhoe LoaderHydraulic System420F:LKH1-UPJWJ1-UP
430F:LNH1-UPRGS1-UP
Printed in U.S.A.© 2012 Caterpillar, All Rights Reserved
COMPONENT LOCATION
Description PartNumber
MachineLocation
SchematicLocation
Pump GP - Implement 307-3069 1 B-4Tank - Hydraulic 358-9301 2 A-5Tank Group - Filter / Breather / Sight Gage 351-5888 3 A-5Cooler - Hydraulic 337-9751 4 B-4Filter - Hydraulic 359-7232 5 B-3Valve HMU - Load Sense Relief 341-7654 6 C-6Cylinder - Front Steer 214-5097 7 B-6
LH: 358-5034RH: 358-5035
Cylinder - Tilt 358-5045 10 B-8Cylinder - MP Bucket (OPT) 185-1839 11 A-8
LH: 291-2681 F-6RH: 291-2682 F-3
420F: 210-7076430F: 246-9884420F: 210-7082430F: 210-7092
LH: 381-8055RH: 381-8054
420F: 210-7088430F: 210-7096
Cylinder - E-Stick 210-7098 17 F-3Accumulator - Pilot 226-0420 18* C-5Valve - Ride Control (OPT) 245-8780 19 C-8Accumulator (OPT) 382-8033 20 C-8Sensor - Ride Control (OPT) 344-7391 21 C-8Sensor - Temp (OPT) 264-4297 22 C-3Switch - Diff Temp (OPT) 134-0404 23* C-3Valve - Coupler (LDR) 359-7228 24 A-8Cylinder - Coupler 178-3713 25 A-8Valve - Loader (PL/IT) 359-7211 27 C-7
6 Bank: 359-72087 Bank: 359-72108 Bank: 359-7212
Valve - Pattern Change 300-4491 29 D-6Valve - Cushion 206-3685 30 F-5Valve - Check (Stab) 359-7213 31 F-3, F-6Valve GP - Pilot (HOE) 359-7227 32 F-8, F-1Valve GP - Pilot 382-4996 33 D-7
STD: 359-7246W/SWITCH: 359-7247
DTNT and SWITCH: 359-7248Manifold - Pilot (BASIC +4) 359-7224 35 D-4Sensor - Pump Discharge 344-7391 36 C-5Valve - Boosted Brake 220-8226 37 D-3Valve - Coupler (HOE) 358-2091 50* A-3Cylinder - Coupler (HOE) 361-1139 51* B-3
Valve GP - Pilot (STAB) 34* E-8
15
16
COMPONENT LOCATIONS
8Cylinder - Lift B-8
F-5
F-4
F-5
F-4
28 F-6
Cylinder - Bucket
Cylinder - Swing
Valve - Backhoe
Cylinder - Stick
Cylinder - Boom
Cylinder - Stab 12
13
14
* COMPONENTS NOT SHOWN
TAP LOCATION
Tap Number Description Schematic Location
T1 PUMP DISCHARGE PRESSURE C-5T2 RIGHT REAR SERVICE BRAKE C-4T3 REAR PARK BRAKES D-5
TAP LOCATIONSPressure, Sampling, Sensor
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.
SCHEMATIC PART NUMBER: 362-9207, CHANGE: 01, VERSION: -
THIS SCHEMATIC IS FOR THE 420F AND 430F BACKHOE LOADER HYDRAULIC SYSTEMMEDIA NUMBER: UENR3237
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
HYDRAULIC CIRCUIT COLOR DESCRIPTIONSPILOT PUMP OUTPUTMAIN PUMP OUTPUTLIFT CYLINDER CIRCUITBUCKET CYLINDER CIRCUITLOAD SENSE CIRCUITSTEERING CIRCUITSTICK CYLINDER CIRCUITSUPPLY LINEAUX CIRCUITBOOM CYLINDER CIRCUITTILT CYLINDER CIRCUITLOADER VALVE CIRCUITDRAIN / RETURN LINESTABILIZER CYLINDER CIRCUITSWING CYLINDER CIRCUITE-STICK CYLINDER CIRCUITCOUPLER CIRCUIT (HOE)BOOSTED BRAKE OIL CIRCUIT
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)YY
(52) VALVE GP - CONTROL138-1234
Callout Number(Machine Location from
Component LocationsTable)
ComponentName
Part Number
OPERATOR LEFT JOYSTICK
STABILIZER JOYSTICK
OPERATOR RIGHT JOYSTICK
T2
T1
T3
(8) CYLINDER - LIFT
(10) CYLINDER - TILT
(11) CYLINDER -MP BUCKET (OPT)
(25) CYLINDER - COUPLER
(24) VALVE - COUPLER (LDR)
(27) VALVE - LOADER (PL/IT)
(21) SENSOR - RIDE CONTROL (OPT)
(20) ACCUMULATOR - OPTIONAL
(19) VALVE - RIDE CONTROL (OPT)
(28) VALVE - BACKHOE
(32) VALVE GP - PILOT (HOE)
(34) VALVE GP - PILOT (STAB)
(33) VALVE GP - PILOT
(12) CYLINDER - STAB
(31) VALVE -CHECK (STAB)
(3) TANK GROUP - FILTER / BREATHER / SIGHT GAGE
(2) TANK - HYDRAULIC
(7) CYLINDER - FRONT STEER
(18) ACCUMULATOR - PILOT
(36) SENSOR -PUMP DISCHARGE
(6) VALVE HMU - LOAD SENSE RELIEF
(29) VALVE - PATTERN CHANGE
(13) CYLINDER - BOOM
(1) PUMP GP - IMPLEMENT
(4) COOLER - HYDRAULIC
(5) FILTER - HYDRAULIC
(23) SWITCH - DIFF PRESS(OPTIONAL)
(22) SENSOR - TEMP(OPTIONAL)
(35) MANIFOLD - PILOT (BASIC +4)
(14) CYLINDER - STICK(15) CYLINDER - SWING
(16) CYLINDER - BUCKET
(30) VALVE - CUSHION
(37) VALVE - BOOSTED BRAKE
(12) CYLINDER - STAB
(31) VALVE - CHECK (STAB)
(32) VALVE GP - PILOT (HOE)
(17) CYLINDER - E STICK(OPT)
(50) VALVE - COUPLER(HOE)
(51) CYLINDER -COUPLER (HOE)
351-5888
358-9301
337-9751
307-3069
214-5079
359-7232
134-0404
264-4297
220-8226
359-7224
226-0420
344-7391
341-7654
300-4491
359-7227
210-7098
291-2682
359-7213
210-7082210-7092
420F:430F:381-8054
LH:RH:
381-8055
206-3685
291-2681 210-7076246-9884
420F:430F:
359-7213
6 BANK: 359-7208
359-7227
359-7247359-7248
W / SWITCH:DTNT and SWITCH:
358-2091
347-2223
BACKHOE COUPLER
T7
P7
HAB
HAA
B8A8
210-7082210-7092
420F:430F:
7 BANK: 359-72108 BANK: 359-7212
359-7246STD:
TA
FRONT STEER CYL.
RH STAB BOOM SWING BUCKET STICK LH STAB E-STICK
A4 B4B3 A6 B6A1 B1
RS2
RS1
BA
BB R4
R2
SB
SA
LS1
LS2 EA
EB
J1
J2 T2 T3 J3
T1
P ACC DIAG
OPERATORLEFT
OPERATORRIGHT
LAAEB
LABEA
LS2LS1RS2RS1
L1L3L2L4
R2R4R3R1
SBBABB SA
L4R1 R3 L2
A3
BRK
LEFTBRAKEPEDAL
TO REAR AXLELEFT WHEEL
BRAKE
TO REAR AXLERIGHT WHEEL
BRAKE
SU
A2 B2 A5 B5 A7 B7
R L
T7P7
T6
P6
L1
L3
RIGHTBRAKEPEDAL
AUX
D
DLS
LIFT
TILT
AUX
ACC
R
T
PS
H
LB
LA
TB
LAB
LAA
P
A1
B1
A2
B2
A3
B3
LIFT
TILT
AUX
359-7211
344-7391
382-8033
245-8780
344-7391
358-5045
185-1839
178-3713
359-7228
382-4996
TA
TILTLIFT
LOADER JOYSTICK
TBLALB
FRONT VIEW
2524
108
4
REAR MACHINE VIEW
33 32 16
15
14
13
12
11
BOOM VIEW - WITH E-STICK
17
FRAME VIEW (From Top)
T2
T1
37
36
30
28
27
22
21
20
197
6
5
32
1
REAR FRAME VIEW
T335
31
29