8/9/2019 D10THIDRAULICO
1/2
REN
7531
24
Page
RENR7531December 2005
D10T Track-Type Tractor Hydrau l ic System
RJG529-UP
2005 CaterpillarAll Rights Reserved
Printed in U.S.A.
-blade raise,or dozerraise solenoid (DR)
-engine overspeed solenoid,orPCO valve (RV)
-blade tiltleft solenoid (TL)
-blade tiltright solenoid (TR)
-blade lower/float,ordozerl ower/floatsolenoid (DL)
-ripper shank out,or tip outsolenoid (TO)
-ripper lower,orripper down solenoid (RD)
-ripper shank in,ortip in solenoid (TI)
-ripper raise,orripper up solenoid (RU)
HPDL
To Blade TiltControl Valve
(Blade TiltRight)
To Tank
Drain FromPressureReducing Manifold
PilotSupply FromPilotFilter/ PressureReducing Manifold
To Blade LiftControl Valve(Blade Raise)
To PCOValve
To Blade TiltControl Valve
(Blade TiltRight)
To Blade LiftControl Valve
(Blade Lower/Float)
To RipperTipControl Valve(ShankOut)
To RipperLiftControl Valve
(RipperLower)
To RipperTipControl Valve
(ShankIn)
To RipperLiftControl Valve
(RipperRaise)
DL =
HPDRDR =
HPSOTO =
HPRLRV =
HPDLRD =
HPTLTL =
HPSITI =
HPTRTR =
HPRRRU =
MANIFOLD GP - PILOT
A.hydraulic lines to/fromthe dozertiltcylindersB.hydraulic lines
to/fromthe dozerliftcylindersC.lift pump pressure sensorD.lift pump
supply to the dozerlift valveE.tilt pump pressure sensorF.return
oil manifold fromall implementcylinders to tank (dozervalve and
rippervalve)G.return oil passage fromrippervalveH.tilt pump supply
to the dozertilt valveJ.high pressure supply passage to the
rippervalve (combined when notusing tilt valve)
DOZER CONTROL VALVE
RIPPER CONTROL VALVE 5B
5
B.high pressure line fromtilt control valve
C.case drain line
D.pilot supply line fromthe RATAAC fan speed control valve
E.dual tiltsolenoid
F.high pressure line fromtiltcontrol valve
G.line connections to the lefttilt cylinder
H.line connections to the righttilt cylinder
MACHINE COMPONENT AND TAP LOCATIONS
A
B C DE
F
G
HJ
ABCD
EF
A
B
D
C
8
A.pressure reducing manifold
B line fromthe logic valve resolvercircuit
C.high pressure supply fromthe pilot pressure
D.pilot supply oil to the remote mounted pilotoil filter
E.implementlockoutvalve solenoid
F.drain to tank
G.pilot reliefvalve
H.dead electric lowervalve (screw and locknut)
J.pressure reducing valve
K.divertervalve
(HPS).Hydraulic Pilot Supply pressure tap
8B
6B
8B
4
6B
1D
8
3B
5
5B
2B
DC
B
A
E
F
GHJK
HPS
PRESSURE REDUCING MANIFOLD 8
DIVERTER VALVE (AUTOCARRY) 2C IMPLEMENT PUMP 2 DUAL TITL VALVE
3A HYDRAULIC OIL COOLER 16
1B
A
7HPRVHPDLHPTR
HPRRHPSOHPDR
HPTL HPSI
2A
2A
1A
3B
1B
2B
13
2E
2E
4B
3
3
1
1
2
2
6
4B
7B
7B
3A
3A7
5
5B
9
9
1C
1C
1F
1F
2C
2C
1D
2D
2D3E
3E 10
10 11
11
12
12
13
*1415
15
HPD1
HPD2
HPD3
HPD1 HPD2
HPS
HPD3
HFPD
HFPD
FS
FS
HDFP
HDFP8HPRVHPDLHPTR
HPRRHPSOHPDRHPTL HPSI
6
HPS
HPD3
B
A
HPD1D
HPD2
HFPD
B
C
E
AB
C
D
E
F
H
G
A
C
D
B
*18
*14
NOTE:
*14-Quick Drop Valve isnot available on machinesequipped with
Autocarry
A.high pressure supply hose (connects to the frontofthe valve -
notvisible here)B.return oil fromrippercylinders (connects to the
return oil manifold - see illustration #92)C.ripper shank in/shank
outvalve sectionD.ripper raise/lowervalve sectionE.hydraulic oil
passages to/fromthe rightripperlift cylinder(otherside -left
cylinder)F.hydraulic oil passages to/fromthe rightri ppershank
cylinder(otherside -left cylinder)
On machines with a cold weatherarrangement,a ripperwarming valve
is attached to the rippervalve.The warmingvalve allows a small
amountof oil to circulate through the valve and return to tank.This
prevents thermal shockfromoccuring inside the valve.
The ripper control valve is shown in theillustration to the
right.It is mounted to the rearofthe main case, just above the
transmissioninspection coverand just below the fuel tank.Itcontrols
the following functions:
RIPPER RAISE,RIPPER LOWER,RIPPER SHANK IN,RIPPER SHANK OUT.
It is supplied oil fromthe liftand tilt sections ofthe
implementpump (when a blade tilt function isnot activated). Service
points identified in theillustration to the right:
Shown to the rightis the dozercontrol valve. It ismounted to the
inside ofthe right fender,justabovethe right frame rail. It may be
accessed byremoving the floor plates in the operatorcompartment.It
controls the following functions:
BLADE RAISE,BLADE LOWER/FLOAT,TILTRIGHT,TILTLEFT.
The dozercontrol valve is supplied oil fromthe liftand tilt
sections of the implement pump. Whenraising orlowering the
blade,the oil frombothsections ofthe pump are combined.When
tiltingthe blade leftorright, the oil fromthe two sectionsare
segregated so thatonly the oil from the tiltsection ofthe
implementpump is used forti lt andthe oil fromthe liftsection ofthe
implementpumpisused for raising and lowering the
blade.Servicepoints identified in the illustration above are:
Majorcomponents in the hydraulic systemare located underthe
operatorplatform and may beaccessed by removing the floorplates in
the operatorcompartment(exceptthe rippervalve).
The dozercontrol valve (A)is mounted to the inside ofthe right
fenderand justabove the rightframe rail.It can be accessed through
the floorplates in the operatorcompartment.
The rippervalve (B)is mounted to the rearof the main case,just
below the centerof the fueltank.
The EH pilotmanifold (C)i s located on top of the main case,
justbelow the floor plates in theoperatorcompartment.
The pressure reducing manifold (D)is located on the frontof the
main case,just below the EH
pilotmanifold.
Formachines equipped with dual tilt,the dual tilt valve (A)is
mounted to the
inside ofthe radiatorguard,and justbehind the leftgrill door.The
dual tiltvalve allows the operator to tilt the blade rightand left,
pitch (dump) the
blade forward,and rack the blade back.The dual tilt valve is
standard onmachines equipped with Auto Blade
Assistand/orAutoCarry.Service points
identified in the above illustration are:
The hydraulic oil cooler(A) is located beneath the
radiatorguard. Theillustration to the left shows a view fromthe
front of the radiatorguard.Return oil fromthe demand fan enters the
cooler atthe cooler inlet(B).The coolerbypass valve is contained
inside the housing (C).
The bypass valve is pressure activated,only.The thicker(more
viscous)oil
creates more pressure,which causes the bypass valve to open when
theoil is cold.This allows mostof the oil to bypass the cooler.Once
the oil iswarm(less viscous),the pressure is less forthe same
volume ofoil andthe bypass valve remains closed.All of the oil from
the demand fan motorwill then pass through the cooler.
All ofthe oil exits the cooler,or the bypass valve,through the
cooleroutlet(D)and returns to the hydraulic tank in
eithercondition.
The three-section fixed displacementgear-type implementpumpis
mounted to the rearof the flywheel housing,at the upperright.This
pump supplies oil to the implementvalves,and the pressurereducing
manifold.
The lift(front) section (A)supplies oil to the blade liftsection
ofthe dozercontrol valve and to the rippercontrol valve.
Pumpdischarge fromthe lift section is through the forward pump
outletport(9). Discharge pressure forthe lift section (HPD1)may
betested atthe forward pressure testport.
The tiltsection (B) supplies oil to the blade tilt section
ofthedozer control valve. Pump discharge from the tilt section
isthrough the middle pump outletport(E). Discharge pressure fortilt
section (HPD2)may be tested atthe middle pressure testport.
The rearsection ofthe implementpump (C) supplies oil to thethe
pilot pressure control valve (D). The rearsection alsoprovides oil
to the pressure reducing manifold.This oil is pilot oilforthe EH
pilotmanifold and forthe dual tiltvalve.The testport(HFPD)is used
to test Fan Pump Discharge Pressure.
Presenton machines with AutoCarry isthe divertervalve (A).Itis
installed atthe front,left ofthe main,near the bottom. When the
AutoCarry mode isactive, the solenoid valve (B) is energized
anddirects the flow fromthe lift (large)pump backtotank.The tilt
pump isthen the sole supply of oilused formaking automatic
heightadjustments to
the dozerblade during the carry cycle.Lift pumppressure (HPD3)
at the diverter valve may bechecked using the pressure tap on the
frontof thedivertervalve.
The pressure reducing manifold islocated on the front of the
main case,below the EH pilot manifold. Service
points shown in the illustration aboveare:
RUTR
TITL
RD
RV
TODR
DL
ONE POSITION T W O PO SI T IO N T H RE E P O SI T IO N
VEN TED PRESSU RI ZED RETURN ABOVE FLUID LEVEL RETURN BELOWFLUID
LEVEL
LINES CROSSING LINES JOINING
TWO-WAY THREE-WAY FOUR-WAY
S PR IN G C ON TR OL V AL VE S RESTRICTION LINE RESTRICTION
(FIXED)
2-SECTION PUMP
MAINAUX.
SPRING
(ADJUSTABLE)
VARIABILITY LINE RESTRICTION
(VARIABLE)
LINE RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURE
COMPENSATION
PUMP:VARIABLE andPRESSURE COMPENSATED
ENERGYTRIANGLES
HYDRAULIC PNEUMATI C
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATINGSHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUALCONTROLSYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENTVARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSINGAND JOININGLINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENTSYMBOLS
FLUID CONDITIONERPUMPorMOTOR
FLUID POWER SYMBOLS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOTCONTROLSYMBOLSRELEASED PRESSURE
EXTERNALRETURN INTERNALRETURN
REMOTE SUPPLYPRESSURE
SIMPLIFIED COMPLETE INTERNAL
SUPPLYPRESSUR E
ACCUMULATORS
SPRINGLOADED GAS CHARGED
SOLENOIDorMANUAL
SOLENOIDand PILOT
SOLENOID andPILOTorMANUAL
COMBINATION CONTROLS
SOLENOID SERVO THERMAL DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOWIN ONEDIRECTION
FLOWALLOWED INEITHER DIRECTION
THREE
POSITION
CROSSFLOW
PARALLELFLOW
INTERNALPASSAGEWAYS
NORMALPOSITION
AB
PT
AB
PT
SHIFTED POSITION INFINITE POSITION
CONTROLVALVES
ATTACHMENT
MANUALSHUTOFF
SHUTTLE PILOTCONTROLLED
Hydraulic Symbols (Electrical)
Electrical Symbols Table
325-AG135 PK-14
CircuitIdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 135 in
harness "AG".
325-PK-14
Wire Gauge
Wire Color
CircuitNumber
Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example Hydraulic Schematic Example
325-PK
Wire ColorCircuitNumberIdentification
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
T
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
Tap Locations
Pressure, Sampling, and SensorTap
NumberDescription
Schematic
Location
HPD1 PUMPDISCHARGE 1 B-3
HPD2 PUMPDISCHARGE 2 B-3
HPD3 PUMPDISCHARGE 3 B-4HPS PILOTSUPPLY E-2
HPDR PILOTLIFTRAISE D-3
HPDL PILOTLIFTLOWER D-5
HPTL PILOTTILTLEFT D-3
HPTR PILOTTILTRIGHT D-5
HPRR PILOTRIPPER RAISE C-5
HPRL PILOTRIPPER LOWER C-3
HPSI PILOTSHANK IN C-3
HPSO PILOTSHANK OUT C-5
HFPD FAN PUMPDISCHARGE B-3
FS FLUID SAMPLING A-3
HDFP DEMAND FAN PUMPDISCH. C-2
HPRV RV PRESSURE SIGNAL E-5
I
Component Locations
Item
NumberDescription
Part
Number
Schematic
Location
STANDARD CONFIGURATION
1 TANK & FILTER GP 211-4364 A-3
2 PUMP GP 228-0272 B-3
3 CYLINDER GP LIFT 9T-2869 F-5
4 CYLINDER GP SINGLE TILT 232-0654 F-4
5 V ALV E G P- CO NT -5 -3 8( A) D OZ ER LI FT 2 34 -3 02 5
D-6
6 VALVE GP-RESOLVER 263-3912 E-5,E-6
7VALVE GP-MTG& E/H PILOTVALVE;DOZER LIFT& TILT,RIPPER,RV
247-3026 D-4,C-4
8MANIFOLD GP-RELIEFPILOTSUPPLYSELECTORAND REDUCER 232-3242
E-3
9 249-1751 E-2
10 PUMP GP - DEMAND FAN 220-0780 C-1
11 MOTOR GP - DEMAND FAN 212-0272 C-2
12 C OO LE R G P- HY D O IL - W AT ER O VE R O IL 2 W- 99 78
C-2
13 VALVE GP-COOLER BYPASS 163-1829 C-2
14 VALVE GP-QUICK DROP 4T-4205 F-5,F-6
15 VALVE GP-VACUUM 154-6165 B-4
DUALTILTOPTION
1A CYLINDER GP DUAL TILT (LH) 232-0653 F-7
2A CYLINDER G PDUAL TILT (RH) 232-0652 F-7
3A VALVE GP-DUAL TILT 225-2321 F-4
RIPPER OPTION
1B CYLINDER GP RIPPER LIFT (RH) 192-6446 A-6
2B CYLINDER GP RIPPER LIFT (LH) 192-6445 A-73B CYLINDER GP
RIPPER TILT 4T-9977 A-6,A-7
4B C YL IND ER GP RIP PE R PI N P ULLE R 6E- 3113 A-5
5B V ALV E G P- RI PP ER RI PP ER LI FT & TI P 2 35 -3 50 6
B-6
6B VALVE GP-RESOLVER 263-3912 C-7
7B VALVE GP-MOUNTING 188-6140 A-5
8B V AL VE G P- RI PP ER W AR MI NG ( OP TI ON ) 1 64 -4 54 0
C-6
ATUOCARRYOPTION
1C C Y LI ND E R G P RH L I FTWI TH P OS I TI ON S E N SI N G 2
3 1- 0 86 5 F-5
2C VALVE GP-DIVERTER FOR CRUISE CONTROLOPT 164-4536 B-4
REVERSINGDEMAND FAN OPTION
1D MOTOR GP-NOANTI-CAV VALVE (BI-DIRECTIONA 212-4977 C-2
2D V A LV E G P- D VTR R EV E RS I NG FO R D EMA ND FA N 2 2 9-
1 46 6 E-1
REFERENCE SENSORS AND SWITCH
2E TRANSDUCER-PRESSURE 237-0957 C-1
3E TRANSDUCER-PRESSURE 237-0957 B-6
EU VACUMBREAKER PACKAGE
1F VALVE GP-VACUUM 117-9152 A-4
1E PRESSURE SWITCH ASSEMBLY 253-2673 A-2
FILTER GPPILOTSUPPLYFILTER
