RENR7531-03 June 2013
Shown to the right is the dozer controlvalve. It is mounted to the inside of the right fender, just above the right frame rail. It may be accessed by removing the floor plates in the operator compartment. It controls the following functions:
B
C
D
BASICCOMPONENT SYMBOLS MAIN
BLADERAISE, BLADELOWER/FLOAT, TILTRIGHT, TILTLEFT.
Part Machine Schematic Number Location Location StandardConfiguration
T a nk A n dF itle r Gp
2 1 1- 4 36 4
P um pG p
1
A-3
2 72 -9 79 5
2
B -3
9T-2869
3
F-5, F-6
232-0654
4
F-4
5
D -6
Cylinder Gp Lift Cylinder Gp Single Tilt V al ve G p- C on rt ol (B (B al de R ai se , Lo we r, Li Li tf )
2 34 -3 02 5
Valv e Gp - Resolver Valve Gp -Mtg And E/H PilotValve; (DozerLift& Tilt,Ripper,RV) Manifold Gp -Relief (PilotSupplySelectorAnd Reducer) Filter Gp - Pilot Supply Filter
249-1751
9
P u mp G p- D e m an d F a n
2 2 0- 0 78 0
10
M oot r G p- D e ma n dF a n
2 1 2- 0 27 2
11
263-3912 2 85 -5 62 5
6
E-5, E-7
7
D -4 , C- 4
2 32 3 - 242
8
D-1 D-2
Core As - Oil Clr (Water Over Oil)
2W-9978 163-1829
13
C-2
ValveGp -QuickDrop
4T-4205
14
F-5,F-6
154-6165
15
A-4
Valv e Gp - Vacuum Breaker
12
C-2
Dual Tilt Option Cylinder Gp - Dual Tilt (LH)
232-0652
1A
232-0653
2A
F-4
Valv e Gp - Dual Tilt
225-2321
3A
F-4
Connector - Orifice
8C-0564
4A
1 92 6 - 4 6 1 92 6 - 4 5
1 B
B- 7
4T-9977
3B 3B
B-6, B-7
C yli nd er Gp Gp - Ri Ri ppe rP rP ni Pu le l r
6 E - 31 13
4 B
285-0139
5B
V avl e G p - R e s ol v er ( E n gi n eO f f Lo w er S i gn a)l
2 6 3- 3 91 2
Valve Gp -Mounting
The ripper control o l valve is shown in the illustration to the right. It is mounted to the rear of the main case, just above the transmission inspection cover and just below the fueltank. It controls the following functions:
A- 5 B-6
6B
C-7
7B
A-5
2 76 -4 83 2
8B
B -7
3 2 3- 8 51 2
1C
F-5
188-6140
V al ve G p- R pi pe r Wa rm ni g( Op it on )
V al ve G p- D vi er te r (C ru si eC on rt ol O pt )
1 64 -4 53 6
2C
B -4
M oot r G p- N o A nit- Ca v V avl e ( B-i Dri e ct i on a)l
2 1 2- 4 97 7
1D
D-2
V al ve G p- D vt r Re ve rs ni g( De ma nd F an )
2 29 -1 46 6
2D
F -1
Pressure Switch Ass e mbly
253-2673
1 E
A-3
Transducer-Pressure
237-0957
2E
D-1
237-0957
P T
3E
P T
A -4
TapLocation Pressure and Sampling Schematic Location
Pump mp Discharge 1
B-3
Pump mp Discharge 2
B-3
HPD3 HPS
Pump mp Discharge 3
E-2
PilotLiftRaise
D-3
HPDL
Pilot Lift Lower
D-5
HPTL
Pilot Tilt Left
D-3
HPTR HPRR
Pilot Tilt Right
C-3
P li ot S ha nk I n
C -3
HPSO
Pilot Shank Out
C-5
Fan Pump Discharge
D-2
Fluid Sampling
A-3
H D F P
D ema nd F an Pu m p D si ch.
C2 -
HPRV
RV Pressure Signal
E-5
PR E S S U R I Z ED
PRESSURE
SPRING LOADED
S H UTTL E
P LIO T CONTROLLED
RETU R N ABO VE FL U I DLE VEL
RE T URN BEL OW FL U ID LE V E L
ROTATING SHAFTS
TEMPERATURE
FLOW
UN I DI RE CT O I N AL
BD I R I EC T I ON A L
COMBINATION CONTROLS
SOLENOID OR MANUAL
PUSH - PULL LEVER
SOLENOID &PILOT
SOLENOID& PILOTORMANUAL
MANUALSHUTOFF
HPTR
HPDR HPSO
HPDL
8 7
HPRV
HPRR
6B
HDFP
SERVO
THERMAL
GENERAL MANUAL
E XT ER N A L RE TU R N
I NT E R NA L R E TU R N
ACCUMULATORS
B A
D
S P RI NG L O AD E D
DETENT
SIMPLIFIED
G A S CH A R GED
LIN E S C RO S SI N G
FIXED DISPLACEMENT
2E 10
12 11
COMPLETE
INTERNAL SUPPLYPRESSURE
LIN E S J OI NN I G
SINGLEACTING
DOUBLEACTING
INTERNAL PASSAGEWAYS
VARIABLEDISPLACE MENT NON-COMPENSATED
INFINITE POSITIONING
3POSITION
FLOWINONE DIRECTION
BIDIRECTIONAL
DL =
HPDL
DR =
HPDR
PARALLEL FLOW
CROSS FLOW
FLOW IN EITHER DIRECTION
TO =
HPSO
ELECTRICAL SYMBOLS TABLE HYDRAULICSYMBOLS(ELECTRICAL)
A
HPSI
G 5B 7B 8B
2POSITION
UNIDIRECTIONAL
Printed in U.S.A.
B
1A 3A 4A
*18
SPRING
HYDRAULIC&PNEUMATICCYLINDERS
HYDRAULICMOTORS
VARIABLEDISPLACEM ENT NON-COMPENSATED
UNIDIRECTIONAL
© 2013 Caterpillar, All Rights Reserved
PEDAL
REMOTESUPPLYPRESSURE
CROSSING&JOININGLINES
HYDRAULICPUMPS FIXED DISPLACEMENT
PUSH BUTTON
PILOT CONTROLSYMBOLS
RELEASEDPRESSURE
2B
3B
C
3
RV =
HPRL
RD =
HPDL
TL =
HPTL
TI =
HPSI
M
TRANSDUCER (FLUID)
TRANSDUCER (GAS/ AIR)
GENERATOR
ELECTRICMOTOR
PRESSURE SWITCH
PRESSURESWITCH (ADJUSTABLE)
TEMPERATURE SWITCH
D
4B 1C
1B
Major components in the hydraulic system are located under the operator platform and may be accessed by removing the floor plates in the operator compartment (except the ripper valve). HPD3
The pressure reducing manifold is located on the front of the main case, belowthe EH pilot manifold. Service points shown in the illustration above are:
BASIC SYMBOL
I NFINI TEPOSI TIO N
MANUALCONTROLSYMBOLS
C-5
Pilot Ripper Lower
H PS I
FS
FOUR -WAY
D-5
PilotRipperRaise
HPRL
HFPD
HPS
HPTL
B-4
Pilot Supply
HPDR
THREE -WAY
MEASUREMENT
F
RIPPER CONTROL VALVE 5B VALVE 5B
HPD2
TWO -WAY
CHECKVALVES
SHI FTEDPO SI TI ON
V E NTE D
D10T Track-Type Tractor Hydraulic System
A. high pressure supply hose (co nnects to the front of the valve - not visible here) B. return oilfrom ripper cylinders (connects to the return oil manifold - see illustration #92) C. ripper shank in/shank out valve section D. ripper raise/lower valve section E. hydraulic oilpas sages to/from the right ripper lift cylinder (other side - left cylinder) F. hydraulic oilpassages to/from the right ripper shank cylin der (other side - left cylinder)
B-5
1F
HPD1
ATTACH MENT
VALVE PORTS
TH R EE P OS T I O I N
BIDIRECTIONAL
Description
PUMP (VARIABLE&PRESSURE COMPENSATED)
LINERESTRICTION (VARIABLE&PRESSURE COMPENSATED)
FLUIDSTORAGERESERVOIRS
On machines with a cold weather arrangement, a ripper warming valve is attached to the ripper valve. The warming valve allows a smallamount of oil to circulate through the valve and return to tank. This prevents thermalshock from occuring inside the valve.
Tap Number
HYDRAULIC PNEUMATIC ENERGYTRIANGLES
AUX
PUMP (2-SECTION)
A B
SOLENOID
E
C
EuVacum Breaker Package 1 17 -9 15 2
PRESSURE COMPENSATION
LIN E R E ST RI C T ION (FIXED)
VALVES
T WO P O SI TI ON
NORMALPOSITION
It is supplied oil from the lift and tilt sections of the implement pump (when a blade tilt function is not activated). Service points identified in the illustration to the right:
ReversingDemandFanOption
V al ve G p- V ac uu mB re ak er ( Eu C om pl ai nt )
LI N E RES T RI C TI ON (VARIABLE)
R E ST RI C T ION
CONTROLVALVES AB
ReferenceSensorsAndSwitch
Transducer-Pressure
O NE P OS T I O I N
RIPPERRAISE, RIPPERLOWER, RIPPERSHANK IN, RIPPERSHANK OUT.
AutoCarryOption C yiln de r G p- R H L i tf ( W ti h P o si it o nS e ns i ng )
SPRING (ADJUSTABLE)
CON T RO L V AL VE S
RJG529-UP
B5 -
2 B
Cylinder Gp - Ripper Tilt Valve Gp -RipperRipper LiftAnd Tip
VA R I A B LII T Y
SPR ING
E-4
Ripper Option C yli nd er Gp Gp - Ri Ri ppe rL rL fit (R (R H ) C yli nd er Gp Gp - Ri Ri p er Li Li tf (L (LH )
FLUIDCONDITION ER
H
J
A
DOZER CONTROL VALVE 5
F-7
Cylinder Gp - Dual Tilt (RH)
PUMPORMOTOR
VALVE ENVELOPES
A. hydraulic lines to/from the d ozer tilt cylinders B. hydraulic lines to/from the dozer lift cylinders C. lift pump pressure sensor D. lift pump supply to the dozer lift valve E. tilt pump pressure sensor F. return oilmanifold from all implement cylinders to tank (dozer valve and ripper valve) G. return oilpassage from ripper valve H. tilt pump supply to the dozer tilt valve J. high pressure supply passage to the ripper valve (combined when not using tilt valve)
E3 E-2
Valv eGp - Check (Cooler Bypass)
G
The dozer controlvalve is supplied oil from the lift and tilt sections of the implement pump. When raising or lowering the blade, the oilfrom both sections of the pump are combined. When tilting the blade left or right, the oilfrom the two sections are segregated so that only the oil from the tilt section of the implement pump is used for tilt and the oil from the lift section of the implement pump is used for raising and lowering the blade. Service points identified in the illustration above are:
ComponentLocation Description
FLUID POWER SYMBOLS
F
E
K
J
H
2C 3E 5 6
1
15
1F
9
2
FS
HPD1 HPD2
13 1D
*14
2D
2A 4
HPDL HPRV
HPDR
HPSO
HPS
HPRR
HPTL HPSI
7 5 6
1F
15
1
*14
FS
5B 8 6B 3 1C
8B
B
11
3B 4B
- engine overspeed solenoid, or PCO valve (RV)
To Ripper Lift ControlValve (RipperRaise)
C. high pressure supply from the pilot pressure
- ripper shank out, or tip out solenoid (TO)
2B 1B
E. implement lockout valve solenoid
CURRENTSTANDARD
HARNESSIDENTIFICATIONCODETHISEXAMPLE INDICATESWIRE135 INHARNESS“AG”
CIRCUITNUMBER IDENTIFICATION
CIRCUITNUMBER IDENTIFICATION
G. pilot relief valve
2C 9
7B
10 2E
3E
2
HPD2 HFPD
12 13
2D 2A
3A 1D
WIRECOLOR
- ripper raise, or ripper up solenoid (RU)
To Blade Tilt ControlValve (BladeTiltRight)
MACHINE COMPONENT AND TAP LOCATIONS
PRESSURE REDUCING MANIFOLD 8
C B
A
B D
E
HPD2
HPD1
B
A
The lift (front) section (A) supplies oilto the blade lift section of the dozer controlvalv e and to the ripper controlvalve. Pump discharge from the lift section is through the forward pump outlet port (9). Discharge pressure for the lift section (HPD1) may be tested at the forward pressure test port. The tilt section (B) supplies oil to the blade tilt section of the dozer control valve. Pump discharge from the tilt section is through the middle pump outlet port (E). Discharge pressure for tilt section (HPD2) may be tested at the middle pressure test port. The rear section of the implement pump (C) supplies oil to the the pilot pressure control valve (D). The rear section also provides oilt o the pressure reducing manifold. This oilis pilot oil for the EHpilot manifold and for the dual tilt valve. The test port (HFPD) is used to test Fan Pump Discharge Pressure.
To Blade Tilt ControlValve (Blade Tilt Right)
B WIREGAUGE
A
(EXAMPLEVALVE)
MANIFOLD GP - PILOT 8
The three-section fixed displacement gear-type implement pump is mounted to the rear of the flywheelh ousing, at the upper right. This pump supplies oilto the implement valves, and the pressure reducing manifold.
HFPD
WIRECOLOR
CIRCUITNUMBER IDENTIFICATION
To PCO Valve
(HPS). Hydraulic Pilot Supply pressure tap
325-PK
325-PK-14
HDFP
HPD3
WIREGAUGE
PREVIOUSSTANDARD
To Blade Lift ControlValve (BladeRaise)
- ripper shank in, or tip in solenoid (TI)
HPD1
NOTE: *14-Quick Drop Valve is not available on machines equipped with Autocarry
WIRE COLOR
WIRE
PilotSupplyFrom PilotFilter/Pressure ReducingManifold
- ripper lower, or ripper down solenoid (RD)
F. drain to tank
A
H YD RA UL IC S CH EM AT IC E XA MP LE
CURRENTSTANDARD
DrainFromPressure ReducingManifold
D. pilot supply oilto the remote mounted pilot oilfilter
Present on machines with AutoCarry is the diverter valve (A). It is installed at the front, left of the main, near the bottom. When the AutoCarry mode is active, the solenoid valve (B) is energized and directs the flowfrom the lift (large) pump backto tank. The tilt pump is then the sole supply of oil used for making automaticheight adjustmentsto the dozer blade during the carry cycle. Lift pump pressure (HPD3) at the diverter valve may be checked using the pressure tap on the front of the diverter valve.
E LE CT RI CA L SC HE MAT IC E XA MP LE
325-AG135 PK-14
Bline from the logic valve resolver circuit
HPD3
FLOW SWITCH
- blade tilt right solenoid (TR) To Tank
K. diverter valve
LEVEL SWITCH
WIRENUMBER IDENTIFICATIONCODES
To Ripper Tip ControlValve ControlValve (ShankIn) (ShankOut) To Ripper Lift ControlValve (RipperLower)
To Blade Lift ControlValve (BladeLower/Float)
- blade lower/float, or dozer lower/float solenoid (DL)
J. pressure reducing valve
TEMPERATURE SWITCH
WIRE
A. pressure reducing manifold
H. dead electric lower valve (screwand locknut)
PRESSURE SWITCH
- blade tilt left solenoid (TL)
E
HPS
HPRR
The pressure reducing manifold (D) is located on the front of the main case, just below the EH pilot manifold. To Ripper Tip
- blade raise, or dozer raise solenoid (DR)
D
HPTR T
The EHpilot manifol d (C) is located on top of the main case, just belowthe floor plates in the operator compartment.
F HPTR
TR = RU =
The ripper valve (B) is mounted to the rear of the main case, jus t below the center of the fuel tank.
HFPD
C
ELECTRICALSYMBOLS(ELECTRICAL)
The dozer control valve (A) is mounted to the inside of the right fender and just above the right frame rail. It can be accessed through the floor plates in the operator compartment.
G
A
ELECTRICAL WIRE
H
B. high pressure line from tilt controlvalve
C
G
The hydraulic oil cooler (A) is located beneath the radiator guard. The illustration to the left shows a view from the front of the radiator guard. Return oil from the demand fan enters the cooler at the cooler inlet (B). The cooler bypass valve is contained inside the housing (C).
For machines equipped with dualti lt, the dualtilt valve (A) is mounted to the inside of the radiator guard, and just behind the left grilldoor. The dual tilt valve allows the operator to tilt the blade right and left, pitch (dump) the blade forward, and rack the blade back. The dualtilt valve is standard on machines equipped with Auto Blade Assist and/or AutoCarry. Service points identified in the above illustration are:
C. case drain line
A
B
D
D. pilot supply line from the RATAACfan speed controlvalv e
D
The bypass valve is pressure activated, only. The thicker (more viscous) oil creates more pressure, which causes the bypass valve to open when the oil is cold. This allows most of the oilto bypass the cooler. Once the oil is warm (less viscous), the pressure is less for the same volume of oiland the bypass valve remains closed. Allof the oil from the demand fan motor willthen pass through the cooler. Allof the oil exits the cooler, or th e bypass valve, throug h the cooler outlet (D) and returns to the hydraulic tank in either condition.
E. dualtilt solenoid F. high pressure line from tilt controlvalve
E
G. line connections to the left tilt cylinder H. line connections to the right tilt cylinder
F C
DIVERTER VALVE (AUTOCARRY)
2C
IMPLEMENT PUMP PUMP 2 2
DUAL TILT VALVE 3A VALVE 3A
HYDRAULIC OIL COOLER 16 COOLER 16
) s e h c n i 8 2 x s e h c n i 4 3 : s n o i s n e m i D (
3 0 1 3 5 7 R N E e , R g a
P 4 2
7
6
5
4
3
2
1
C1 (3) CYLINDER GP LIFT 9T-2869
(1A) CYLINDERGP DUAL TILT (LH) 232-0652
F
(1C) CYLINDERGP RHLIFT (WITHPOSITION SENSING) 323-8512
C2 (4) CYLINDER GP SINGLETILT 232-0654
ENDSTROKE BYPASSVALVE (TYPICAL)
(14)VALVEGP QUICK DROP 4T-4205
P
F
(2A) CYLINDERGP DUAL TILT (RH) 232-0653
(3A)VALVEGP DUAL TILT 225-2321 S1=PITCH S2=SINGLETILT DEFAULT=DUALTILT
S2 C4
C4
C3
C3 (4A) CONNECTOR- ORIFICE 8C-0564
(6)VALVEGP RESOLVER 263-3912
T
S1
T
(8)MANIFOLDGP RELIEF (PILOTSUPPLY SELECTORAND REDUCER) 232-3242
SINGLE TILT OPTION
(7)VALVEGP MTGANDE/HPILOTVALVE 285-5625
(6)VALVEGP RESOLVER 263-3912
(2D)MANIFOLDGP DVTR REVERSING (DEMAND FAN) 229-1466
(9)FILTERGP PILOTSUPPLY FILTER 249-1751
(6B)VALVEGP RESOLVER (ENGINEOFF LOWERSIGNAL) 263-3912
E
E
HPS CIRCUITWITHOUTRIPPER
HPRV
(RV) PCO VALVE
HFPD
HPDR (5)VALVEGP CONTROL (BLADERAISE, LOWER,LIFT) 234-3025
(10)PUMPGP DEMAND FAN 220-0780
HPDL
(11) MOTOR GP DEMAND FAN 212-0272 (1D) MOTOR GP NOANTI-CAV VALVE( BI-DIRECTIONAL) 212-4977
RAISE
LOWER/FLOAT
D
HPTL
(2E) TRANSDUCER PRESSURE 237-0957
HFPD
C1
D
P
HPTR
TO PTO PUMP
TILT RT
) s e h c n i 8 2 x s e h c n i 4 3 : s n o i s n e m i D (
3 0 1 3 5 7 R N E e , R g a
P 4 2
TILT LT
HPRL
C2 HPRR
T
RIP DOWN
RIP UP
HPSI C
(12)COREAS OIL CLR(WATER OVEROIL) 2W-9978
C
HPSO TIP IN
TIP OUT
(13)VALVEGP CHECK(COOLERBYPASS) 163-1829
(6B)VALVEGP RESOLVER(ENGINEOFF LOWERSIGNAL) 263-3912
(3E) TRANSDUCER PRESSURE 237-0957 (2C)VALVEGP DIVERTER (CRUISE CONTROL OPT) 164-4536
(8B)VALVEGP RIPPERWARMING (OPTION) 276-4832
(8B)VALVEGP RIPPERWARMING (OPTION) 276-4832
HPDI
HPD2
(5B)VALVEGP RIPPERLIFTANDTIP 285-0139
(2)PUMPGP 272-9795
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS IMPLEMENT PUMP(DUAL TILT) IMPLEMENTPUMP(LIFT) IMPLEMENTPUMP(TILT) LIFT CYLINDERCIRCUIT TILT CYLINDERCIRCUIT PCO VALVE RIPPERCYLINDERCIRCUIT SUPPLYLINE RESOLVERCIRCUIT DEMANDFANPUMPCIRCUIT DRAIN/ RETURNLINE PINPULLER(RIPPER)
B
HPD3
(15)VALVEGP VACUUMBREAKER 154-6165 (1F)VALVEGP VACUUMBREAKER (EUCOMPLIANT) 117-9152 (2B) CYLINDER GP RIPPER LIFT (LH) 192-6445
LINEPATTERNS
FS
PressureLine Pilot / Load Sensing Pressure Drain / Return Lines
(1B) CYLINDER GP RIPPERLIFT (RH) 192-6446
(3B) CYLINDER GP RIPPERTILT 4T-9977
B
Component Group Attachment Air Line (4B) CYLINDERGP RIPPERPINPULLER 6E-3113
A
CALLOUTS YY
(7B)VALVEGP MOUNTING 188-6140
SUPPLY (TRANS-See PTO Schematic) TANK
Taps (Pressure, Sampling, Sensor - by letter)
(1E)PRESSURE SWITCH ASSEMBLY 253-2673
(1)TANKANDFILTERGP 211-4364
THIS SCHEMATIC IS FOR THE D10T TRACK-TYPE TRACTOR HYDRAULIC SYSTEM MEDIANUMBER:RENR7531-03 SCHEMATIC PART NUMBER: 272-9801, CHANGE: 05, VERSION: Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutraland with parking brake set. Refer to the appropriate Service Manualfor Troublesh ooting, Specifications and Systems Operations.
7
6
5
4
3
2
1
A
