Sist. Hid.
Transcript of Sist. Hid.
INTERACTIVE SCHEMATIC
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Cover PageInformation
SchematicMachine Views
Component TableTap Table
Fluid Power Symbols
Electrical Symbols
Front Frame
Rear Frame
Tap Views
Features
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Bookmarks X
EC-C3EC-C2 E-C60
EC-C1
E-C61
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Hydraulic System
©2011 Caterpillar, All Rights Reserved Printed in U.S.A.
Volume 2 of 2
RENR9044-02February 2011
24M Motor Grader
B9K1-336
Volume 1 of 2
Volume 1 of 2 COMPONENT LOCATION
Description PartNumber
MachineLocation
SchematicLocation
Accumulator Gp - LH Blade Cushion 219-8035 1 E-8 , F-2Accumulator Gp - RH Blade Cushion 219-8035 2 D-8 , F-1Cylinder Gp - Articulation 273-1733 3 D-4Cylinder Gp - Blade Tip 143-5988 4 D-5Cylinder Gp - Center Shift 276-7646 5 D-7Cylinder Gp - LH Blade Lift 276-7646 6 E-7 , F-3Cylinder Gp - LH Steering 270-8686 7 C-2Cylinder Gp - LH Wheel Lean 117-0836 8 E-7Cylinder Gp - RH Blade Lift 276-7646 9 D-8 , F-1Cylinder Gp - RH Steering 270-8686 10 C-2Cylinder Gp - RH Wheel Lean 117-0836 11 E-6Cylinder Gp - Ripper 113-7754 12 D-4Cylinder Gp - Side Shift 141-2914 13 E-5Filter Gp - Case Drain 197-1993 14 A-8Filter Gp - Pilot 197-1993 15 B-4Filter Gp - Return 341-2079 16 A-8Filter Gp - Return 341-2079 17 A-8Manifold Gp - Pilot Shutoff Solenoid 306-5134 18 B-5
Motor Gp - Circle Drive 121-9270 19 E-4Pump Gp - Implement & Steering 268-4763 20 A-6Pump Gp - Secondary Steering 117-5098 21 A-5Screen - Left Implement Control Valve 250-1420 22 E-4Screen - Right Implement Control Valve 250-1420 23 B-4Screen - Steer Pilot Manifold Valve 6E-5066 24 B-1Sensor Gp - Pressure (Implement Pump) 221-3404 25 B-6Switch As - Pressure (Case Drain Filter Bypass) 253-2673 26 A-8Switch As - Pressure (Pilot Filter Bypass) 253-2673 27 A-4Switch As - Pressure (Return Filter Bypass) 164-7577 28 A-8Switch As - Pressure (Return Filter Bypass) 164-7577 29 A-8Swivel Gp 260-6502 30 E-6Tank Gp - Hydraulic Oil 286-2964 31 B-7Valve - Shuttle (Load Signal Resolver) 6R-7605 32 A-3Valve Gp - Breaker Relief 117-9152 33 B-8Valve Gp - Check 193-9230 34 A-5Valve Gp - Check (Center Shift Cylinder) 223-2459 35 D-7Valve Gp - Check (Implement / Steer) 255-3631 36 A-3Valve Gp - Check (LH Blade Cylinder) 223-2459 37 E-7 , E-2Valve Gp - Check (RH Blade Cylinder) 223-2459 38 D-8 , E-1Valve Gp - Circle Flow Divider 112-9049 39 E-5Valve Gp - Left Implement Control 270-1612 40 F-4Valve Gp - Right Implement Control 270-1613 41 C-5Valve Gp - Ripper Sequence 140-0357 42 E-4Valve Gp - Secondary Steering Control 117-5099 43 A-4Valve Gp - Steering Control 308-0937 44 C-2Valve Gp - Steering Pilot Manifold 254-3415 45 C-1
Valve Gp - LH Constant Force 279-6521 46 E-2Valve Gp - RH Constant Force 279-6521 47 F-1
Constant Force Attachments
Volume 2 of 2 COMPONENT LOCATION
Description PartNumber
MachineLocation
SchematicLocation
Accumulator Gp - Brake 219-7282 50 F-7Adjuster Gp - LHR Service Brake Slack 2G-6535 51 D-2Adjuster Gp - RHR Service Brake Slack 2G-6535 52 E-2Control Gp - Service Brake Pedal 294-0978 53 E-4Filter Gp - Differential Lock 249-1750 54 B-4Manifold Gp - Fan/Brake Charge Control 272-0984 55 E-7Manifold Gp - Parking Brake Control 283-9560 56 F-6Motor Gp - Fan 213-5268 57 D-5Pump & Motor Gp - Brake (Electric) 5T-1060 58
B-7Pump Gp - Fan/Brake & Diff Lock 270-2720 59
A-5
Pump Gp - Transmission Charge 270-2721 60 B-7Sensor Gp - Pressure (Brake Accumulator) 237-0957 61 E-7Sensor Gp - Temperature (Hydraulic Oil) 264-4297 62 C-5Switch As - Differential Lock Filter Bypass 227-6744 63 B-4Switch As - Parking Brake Pressure 229-1537 64 F-5Valve Gp - Check (Electric Brake Pump & Motor) 164-7474 65 E-8Valve Gp - Check (Fan Anti Cavitation) 193-9230 66 D-6Valve Gp - Cooler Bypass 200-6311 67 C-5Valve Gp - Differential Lock Relief 266-1601 68 B-3Valve Gp - Differential Lock Solenoid 277-8874 69 A-3
Volume 1 of 1TAP LOCATION
TapNumber Description Schematic
LocationAA Implement Pump Pressure B-7BB
Implement / Steering Pump PressureB-6
CC
Implement / Steering Pump Load Sense
B-6DD Implement B-5EE Pilot Supply Pressure A-4FF Pilot Filter Bypass Pressure B-4GG Case Drain Filter Bypass Pressue A-8HH Return Filter Bypass Pressure A-8JJ Return Filter Bypass Pressure A-8
SOS 1 Hydraulic Oil Sampling A-4SOS 2 Hydraulic Return Oil Sampling A-8SOS 3 Hydraulic Return Oil Sampling A-8
Volume 2 of 2 TAP LOCATION
TapNumber Description Schematic
LocationKK Fan/Brake Pump Pressure C-7LL Differential Pump Pressure B-4MM Differential Lock Pressure A-3NN Right Hand Rear Brake Pressure E-3OO Left Hand Rear Brake Pressure C-3
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.
VOLUME 1 of 2
SCHEMATIC PART NUMBER: 266-1589, CHANGE: 03, VERSION: -MEDIA NUMBER: RENR9044-02
THIS SCHEMATIC IS FOR THE _24M MOTOR GRADER HYDRAULIC SYSTEM
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)YY
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONSIMPLEMENT / STEERIMG PUMPS OUTPUT
FAN / BRAKE PUMP OUTPUT
STEERING CYLINDER CONTROL CIRCUIT
PILOT SHUTOFF CIRCUIT
RIPPER CYLINDER CONTROL CIRCUIT
TRANSMISSION PUMP OUTPUT
SECONDARY STEERING PUMP OUTPUT
SUPPLY LINE
WHEEL LEAN CYLINDERS CONTOL CIRCUIT
CIRCLE DRIVE MOTOR CONTROL CIRCUIT
CENTER SHIFT CYLINDER CONTROL CIRCUIT
ARTICULATION CYLINDER CONTROL CIRCUITSERVICE BRAKE CYLINDERS CONTROL CIRCUIT
PARKING BRAKE CYLINDERS CONTROL CIRUIT
ELECTRIC BRAKE PUMP OUTPUTDIFFERENTIAL LOCK PUMP OUTPUT AND CONTROL CIRCUIT
BLADE TIP CYLINDER CONTRO CIRCUIT
SIDE SHIFT CYLINDER CONTROL CIRCUIT
IMPLEMENT AND STEERING PUMP LOAD SENSE CIRCUIT
12345678
A
C
D
E
F
12345678
A
B
C
D
E
F
B
12345678
A
C
D
E
F
12345678
A
B
C
D
E
F
B
)(
BLADE LIFT WHEEL LEAN SIDE SHIFT CIRCLE DRIVE RIPPER
GaugeP1
P LS T
Ts
Ps
LE
RE
L
R
CL CR
SOS
QD
)(
LH BLADELIFT VALVESECTION
RH BLADELIFT VALVESECTION
(24) SCREEN(STEER PILOT
MANIFOLDVALVE)
6E-5066
(45) VALVE GPSTEERING PILOTMANIFOLD254-3415
(44) VALVE GPSTEERINGCONTROL308-0937
(10) CYLINDER GPRH STEERING270-8686
(7) CYLINDER GPLH STEERING270-8686
(32) VALVESHUTTLE(LOAD SIGNALRESOLVER)6R-7605
(23) SCREENREAR IMPLEMENT
CONTROL VALVE250-1420
(22) SCREENLEFT IMPLEMENTCONTROL VALVE
250-1420
(15) FILTER GPPILOT197-1993
(18) MANIFOLD GPPILOT SHUTOFFSOLENOID306-5134
(20) PUMP GPIMPLEMENT
AND STEERING268-4763
(21) PUMP GPSECONDARY
STEERING117-5098
(43) VALVE GPSEC STEERCONTROL117-5099
(36) VALVE GPCHECKIMP/STEER255-3631
(31) TANK GPHYDRAULIC286-2964
(33) VALVE GPBREAKER
RELIEF117-9152
(14) FILTER GPCASE DRAIN197-1993
(40) VALVE GPLEFT IMPLEMENTCONTROL270-1612
(41) VALVE GPRIGHT IMPLEMENTCONTROL270-1613
(5) CYLINDER GPCENTER SHIFT276-7646
(9) CYLINDER GPRH BLADE LIFT276-7646
(6) CYLINDER GPLH BLADE LIFT276-7646
(11) CYLINDER GPRH WHEEL LEAN117-0836
(8) CYLINDER GPLH WHEEL LEAN117-0836
(13) CYLINDER GPSIDE SHIFT141-2914
(4) CYLINDER GPBLADE TIP143-5988
(30) SWIVEL GP260-6502
(42) VALVE GPRIPPER SEQUENCE140-0357
(3) CYLINDER GPARTICULATION273-1733
(12) CYLINDER GPRIPPER113-7754
(19) MOTOR GPCIRCLE DRIVE121-9270
(39) VALVE GPCIRCLE FLOWDIVIDER112-9049
(1) ACCUMULATOR GPLH BLADE CUSHION
219-8035
(2) ACCUMULATOR GPRH BLADE CUSHION
219-8035
(37) VALVE GPCHECK(LH BLADE CYL)223-2459
(38) VALVE GPCHECK(RH BLADE CYL)223-2459
(35) VALVE GPCHECK(CENTER SHIFT CYL)223-2459
(37) VALVE GPCHECK(LH BLADE CYL)223-2459
(38) VALVE GPCHECK(RH BLADE CYL)223-2459
(46) VALVE GPLH CONSTANT FORCE279-6521
(47) VALVE GPRH CONSTANT FORCE279-6521
(9) CYLINDER GPRH BLADE LIFT
276-7646
(2) ACCUMULATOR GPRH BLADE CUSHION219-8035
(6) CYLINDER GPLH BLADE LIFT
276-7646
(1) ACCUMULATOR GPLH BLADE CUSHION219-8035
(34) VALVE GPCHECK
193-9230
FROM FAN PUMP & MOTOR CASE DRAINSLOC VOL 2 SEC B-1TO FAN PUMP
LOC VOL 2 SEC A-8
FROM BRAKE MANIFOLDLOC VOL 2 SEC C-8
FROM COOLER BYPASS VALVELOC VOL 2 SEC C-8
TO ELEC. BRAKE PUMPLOC VOL 2 SEC A-8
(25) SENSOR GPPRESSURE
IMPLEMENT PUMP221-3404
(27) SWITCH ASPRESSUREPILOT FILTERBYPASS253-2673
(26) SWITCHASPRESSURECASE DRAINFILTERBYPASS253-2673
(28) SWITCHASPRESSURERETURNFILTERBYPASS164-7577
(29) SWITCHPRESSURERETURN FILTERBYPASS164-7577
BLADE LIFT CENTER SHIFT BLADE TIP CIRCLE DRIVE ARTICULATION
IMPLEMENT IMPLEMENT/STEERING
CONSTANT FORCE ATTACHMENT
EESOS1
DD
AACC
BB
FF
GG
HH
SOS2
JJ
SOS3
(16) FLTRGPRETURN341-2079
(17) FILTER GPRETURN341-2079
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.
VOLUME 2 of 2: DESCRIPTION FROM COVER PAGE
SCHEMATIC PART NUMBER: 266-1589, CHANGE: 03, VERSION: -MEDIA NUMBER: RENR9044-02
THIS SCHEMATIC IS FOR THE _24M MOTOR GRADER HYDRAULIC SYSTEM
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)YY
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONSIMPLEMENT / STEERIMG PUMPS OUTPUT
FAN / BRAKE PUMP OUTPUT
STEERING CYLINDER CONTROL CIRCUIT
PILOT SHUTOFF CIRCUIT
RIPPER CYLINDER CONTROL CIRCUIT
TRANSMISSION PUMP OUTPUT
SECONDARY STEERING PUMP OUTPUT
SUPPLY LINE
WHEEL LEAN CYLINDERS CONTOL CIRCUIT
CIRCLE DRIVE MOTOR CONTROL CIRCUIT
CENTER SHIFT CYLINDER CONTROL CIRCUIT
ARTICULATION CYLINDER CONTROL CIRCUITSERVICE BRAKE CYLINDERS CONTROL CIRCUIT
PARKING BRAKE CYLINDERS CONTROL CIRUIT
ELECTRIC BRAKE PUMP OUTPUTDIFFERENTIAL LOCK PUMP OUTPUT AND CONTROL CIRCUIT
BLADE TIP CYLINDER CONTRO CIRCUIT
SIDE SHIFT CYLINDER CONTROL CIRCUIT
IMPLEMENT AND STEERING PUMP LOAD SENSE CIRCUIT
12345678
A
C
D
E
F
12345678
A
B
C
D
E
F
B
12345678
A
C
D
E
F
12345678
A
B
C
D
E
F
B
TRANS CHARGE
DIFFERENTIALBEARING LUBE
FAN/BRAKE PUMP
(59) PUMP GPFAN/BRAKE
& DIFF LOCK270-2720
(67) VALVE GPCOOLERBYPASS200-6311
(57) MOTOR GPFAN213-5268
(52) ADJUSTER GPRHR SERVICE BRAKESLACK2G-6535
(53) CONTROL GPSERVICE BRAKE PEDAL294-0978
(56) MANIFOLD GPPARKING BRAKE CONTROL 283-9560
(64) SWITCH ASPARKING BRAKEPRESSURE229-1537
(51) ADJUSTER GPLHR SERVICE BRAKESLACK2G-6535
(68) VALVE GPDIFF LOCKRELIEF266-1601
(54) FILTER GPDIFF LOCK249-1750
(69) VALVE GPDIFF LOCKSOLENOID
277-8874
DIFFERENTIALLOCK
(58) PUMP & MOTOR GPBRAKE (ELECTRIC)
5T-1060
(60) PUMP GPTRANSMISSION
CHARGE270-2721
(66) VALVE GPCHECK
FANANTI CAVITATION
193-9230
(55) MANIFOLD GPFAN/BRAKE CHARGECONTROL272-0984
(50) ACCUMULATOR GPBRAKE219-7282
(65) VALVE GPCHECK
ELECTRICBRAKE PUMP
& MOTOR164-7474
TO CASE DRAIN FILTERLOC VOL 1 SEC A-6
FROM FAN SUCTION PORTLOC VOL 1 SEC A-7
TO RETURN MANIFOLDLOC VOL 1 SEC A-3
TO TANKLOC VOL 1 SEC A-3
FROM TANK SUCTION PORTLOC VOL 1 SEC A-7
(61) SENSOR GPPRESSURE
(BRAKE ACCUMULATOR)
237-0957
(63) SWITCH ASDIFF LOCKFILTERBYPASS227-6744
(62) SENSOR GPTEMPERATUREHYDRAULIC OIL264-4297
LL
MM
KK
NN
OO
MACHINE COMPONENT LOCATIONS 1
47
47
46
4645
4544
44
43
43
42
42
41
41
40
40
39
39
38
38
37
37
36
36
35
35
34
34
33
33 32
32
31
31
30
30
29
29
28
28
27
27
26
26
25
25
24
24
23
2322
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
109
9
8
8
7
7
6
6 5
54
4
43
3
3
2
21
1
MACHINE COMPONENT LOCATIONS 2
69
69
68
68
67
67
66
66
65
65
64
64
63
63
62
62
61
61
60
60
59
59
58
58
57
57
56
56
55
55
54
54
53
53
52
52
51
51
50
50
DIFFERENTIAL LOCK
MM
LL
69
6863
54
FILTERS AND HYDRAULIC TANK
FF
GG
SOS3
SOS2
HH
JJ
31
29
28
27
26
17
16
15
14
IMPLEMENT/STEER PUMPS
20
CCBBAA
PILOT SHUTOFF MANIFOLD
18
EESOS1DD
SERVICE BRAKES
65
OO
NN
KK
58
56
55
53
52
51
50