Component Locations
Description
Part Number
Machine Location
200-0750
1
D-12
C oo e l rG p- H yd ra ul ic O li
1 69 3 - 80 6
2
G5 -
C ov er - V al ve S a t ck
1 69 9- 11 9
3
C9 -
C yl n i de rG p- A ng el
2 03 0- 82 0
4
E 1-
C yiln de rG p- D ua lT i tl
N ot eA
9 T 6- 09 5
5
RENR4275-03 November 2004
Schematic Location
Accumulator Gp - Pilot Circuit cuit
28
15 36
29
15
22
127-8931 129-4258
2
G -1
C yl n i de rG p- R p i pe rL fi t
9 T- 27 16
C yl n i de rG p- S n i gl eT il t
1 66 2 - 58 2
E el me nt - I mp R et ur n
4 T- 05 52
F li e t r- C as eR et ur n
9 T- 89 99
P ump G p- P si o t n 1 62 0- 32 4 Manifold Gp -Blade Tilt& Angle Cy Rel 212-3726 M an fi ol dG p - B o l ck
2 22 0- 41 7
6
4
F5 -
13
8
14
H9 -
15
G -5
31
V avl eG p- B r ea h t er
3 G- 47 83
16 17
21
Note B 239-0681
22
V avl eG p- C on t or l( D oz er L i tf )
1 6 2- 80 40
23
33 35
E 5-
20
- 49 2 Note D 2 08 1
Valve Gp -CBAL(Lift Circuit)
F-5
10 9
20
12
3
14
23
24 25
26
162-8041 216-8609 162-8042
38
19
5
D -9 G-3
ValveGp - Control (Steering)
107-1191
Valve Gp- Control(Winch)
232-4854
Valve Gp - Cooler Bypass 119-9620 (Pressure Based) ValveGp-DozerPilot Valve DS DS(CTCT) PAT PAT(CTCT)
24
E-9
25
E-9
26
G-9 E-7
28
G-6
200-0189 240-9654 206-7333 240-9655 2 3 4- 51 26
C-4
30
A-5
162-0162
31
1 13 5 - 42 9
32
(Single Axis) is)
1 67 1 - 17 7 1 30 4 - 53 1
V al ve G p- S ol en oi d
3 10
35
D7 -
36
H-5
206-7334 162-8036 232-5921 162-8034 1 6 0- 07 66 2 32 - 62 03
P LI O T CONTROLLED
ROTATING SHAFTS
TEMPERATURE
FLOW
U NI DI RE CT O I NA L
BD I R I EC TI ON AL
RETURNABOVE FLUID LEVEL
P R ES S UR I Z ED
SOLENOID
RETURN BELOW FLUID LEVEL
SOLENOID or MANUAL
SOLENOID and PILOT or MANUAL
SOLENOID and PILOT
SERVO
THERMAL
DETENT
MANUAL CONTROL SYMBOLS
PUSH-PULL LEVER
MANUALSHUTOFF
G EN ER AL M AN U A L
P US HB UT T O N
PEDAL
S PR N I G
38
PILOT CONTROL SYMBOLS RELEASED PRESSURE
34
REMOTE SUPPLY PRESSURE
31 EXTERNALRETURN
15 36
37
SPRING LOADED
SIMPLIFIED
CROSSING AND JOINING LINES
GAS CHARGED
LINES CROSSING
HYDRAULIC PUMPS FIXED DISPLACEMENT
4
H-9
38 39
INTERNAL RETURN
ACCUMULATORS
2
C1 - 2
9T-4789
V avl e G p- W i nc hP i o l t
FOUR-WAY
S HU TT LE
COMBINATION CONTROLS
H -2
2 06 4- 79 5
W i nc hA r r- P a c a rW i nc hU ni t
VEN TED
AAX1-UP BMY1-UP BPZ1-UP BRZ1-UP
D1 - 1
ValveGp - UnitTest5 - UnitTest4 - UnitTest4 - UnitTest3
Note C
14 16 17 19
21 23 24 25 37
9
AFM1-UP BPM1-UP AEP1-UP BLT1-UP FDT1-UP
E-11
33 34
Valve Gp - SteeringCounter-Balance (Note D, H) (Note A, E) (Note A, G) (Note A, F)
8
F W D
22
V al ve G p- Q ui ck D ro p V al ve G p- S hu -t Of f
THREE-WAY
SPRING LOADED
32
29
Valve Gp - Pressure s ureReducing & Check Valve Gp- RipperPilot
4
29
33 35 38
1
V avl e G p- M ou nt i ng &
BNC1-UP ADE1-UP BRE1-UP DAE1-UP BNL1-UP
5
13 20 27
27
BASIC SYMBOL
FLUID STORAGE RESERVOIRS
D6R Series II Track-Type Tractor Hydraulic System
37
F-9 2 8
NoteA NoteD
I N FN I I T EP O S I T ION
16 17 21
ValveGp-Control(DozerTilt)
Valve Gp - Control(Ripper)
TWO-WAY
CHECKVALVES
PT SHIF TED P O S I TO IN
PRESSURE
13 27
B5 -
19
T H R E EP O S I TOI N
A B
MEASUREMENT
A-5 F-7, F-10
18
V al ve G p- C on rt ol ( An gl e)
VALVE PORTS
Power Angle Tilt - Option
34
1 97 0- 95 9
ATTACHMENT
LINE RESTRICTION VARIABLEandPRESSURE COMPENSATED
TOP VIEW PT NORMAL POSITION
Resolver Valve 233-6942 238-4986
PUMP: VARIABLE and PRESSURE COMPENSATED
2-SECTION PUMP
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
CONTROLVALVES A B
1
D7 -
1 64 8- 91 3 1 59 -7 15 6
2 24 4 - 53 5
LINE RESTRICTION (FIXED)
RESTRICTION
VALVES
T W OP O S I TOI N
ONE POSITION
F -1 E5 G 4F-2
M ot or G p- S t ee ri n gM ot o r
Tank Gp - Filter
LINERESTRICTION (VARIABLE)
VALVE ENVELOPES
4
PRESSURE COMPENSATION
I -1 2
8 9 10 11 12
M an fi ol dG p- I nl et
S en so rG p- P re ss ur e
SPRING (ADJUSTABLE)
VARIABILITY
CONTROL VALVES
SPRING
FLUID CONDITIONER
32
H-2
7
BASIC COMPONENT SYMBOLS
PUMP or MOTOR
Cylinder Gp - Lift (Std) (LGP)
FLUID POWER SYMBOLS
MAIN AUX.
11
18
12
FIXED DISPLACEMENT
UNIDIRECTIONAL
BIDIRECTIONAL
BIDIRECTIONAL
INTERNAL SUPPLY PRESSURE
SINGLEACTING
DOUBLE ACTING
INTERNALPASSAGEWAYS
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
COMPLETE
INFINITE POSITIONING
PARALLEL FLOW
FLOW IN ONE DIRECTION
TWO POSITION
THREE POSITION
CROSS FLOW
FLOW ALLOWED IN EITHER DIRECTION
Differential Steering ng - Standard, Power Angle Tilt, and Accugrade Options
11
Machine Component Locations
A-12
LINES JOINING
HYDRAULIC MOTORS
VARIABLE DISPLACEMENT NON-COMPENSATED
HYDRAULIC AND PNEUMATIC CYLINDERS
© 2004 Caterpillar All Rights Reserved
Standard Dozer Blade
G -1 2
Printed in U.S.A.
Note A: Only on DS and DS (CTCT) Note B: Only on AccuGrade Option
ElectricalSymbolsTable
Note C: For Angle Pilot Control Press Note D: Only on PAT and PAT (CTCT)
K
HydraulicSymbols (Electrical)
Note E: Steer, Dozer Lift/Tilt, Ripper Note F: Steer, Dozer Lift/Tilt
FWD
Note G: Steer, Dozer Lift/Tilt, Winch
M
G
Note H: Steer, Dozer Lift/Tilt/Angle, Ripper Lift Note I: Only on DS
Transducer (Fluid)
Note J: Only on DS (CTCT)
Generator
Electric Motor
K
BB
Note K: Only on PAT
Transducer (Gas / Air)
Note L: Only on PAT (CTCT)
TapLocations Pressure,Sampling,andSensor Tap Number
CP
Description
Schematic Location
BB
Oil Cooler (Outlet)and SteeringMotor(Supply)Port
CP
PilotSupply (Pressure Tap after Pressure Reducing Valve and after Discharge Valve.)
D-11
HA
Implement PumpDischarge - at Valve
E-11
HB
Implement PumpSignal- at Valve
H-4
Pressure Switch (Adjustable)
Pressure Switch
F-5
K
U p st r ea mF i tl er
F-5
MA
S t ee rni gP or t A
H-5
MB
S t ee rni gP or t B
G-5
SOS
OilSamplingPort
Electrical Wire
Temperature Switch
K
ElectricalSymbols (Electrical)
CP
T
Pressure Symbol
Temperature Symbol
D-11
Flow Symbol
Level Symbol
Wire Number Identification Codes
HB TOP LEFT SIDE VIEW
ElectricalSchematicExample
FWD 7
Hydraulic Schematic Example Current Standard
Current Standard Harnessidentificationcode Thisexampleindicates wire135inharness"AG".
Wire CircuitNumber Identification
HA
WireColor
325-AG135 PK-14 325-PK
HB HA
Circuit Identificatio n Number
HB
37
WireColor
Wire Gauge
Previous Standard FRONT VIEW
HA
WireColor
Wire
325-PK-14
Ripper
Winch
LEFT SIDE VIEW
RIPPER / WINCH DOZER TILT DOZER LIFT
B
Lines Group - Implement & Steering Pump
Optional - Ripper & Winch
DOZER TILT
DOZER ANGLE
CircuitNumber Identification
Lines Group - Pump
(EXAMPLE VALVE)
HB
CompensatorValve
RIPPER LIFT
DOZER LIFT
DOZER TILT
STEERING
DOZER LIFT
1
Piston-typePump STEERING
STEERING
Unit Test 3 - 162-8034
Unit Test 4 - 162-8036 (Ripper) - 232-5291 (Winch)
Unit Test 5 - 206-7334
HA
Pump Gp - Pressure Taps
A
WireGauge
Accumlator
3 0 5 S 7 J B 2 e , 4 g a P R 0 3 N E R
12
11
10
9
8
7
6
5
4
3
2
1
RIPPERARRANGEMENT SEE LOC H-11
DD
VALVE GP QUICK DROP 113-5429
VALVE GP
I
NOTE A, E UNIT TEST 4 162-8036
LOWER
CYLINDER GP RIPPER LIFT 9T-2716
RAISE
S T AND AR D
I
NOTE A, F UNIT TEST 3 162-8034
WINCHARRANGEMENT
NOTE A, G UNIT TEST 4 232-5921 NOTE D, H UNIT TEST 5 206-7334
RIPPERARRANGEMENT
VALVE GP COUNTERBALANCE VALVE - STEERING 9T-4789
MA
B
RAISE
RIPPERARRANGEMENT
PUMPDISCHARGE
CYLINDER GP LIFT
A BLADE LIFT
PUMPDISCHARGE
STD 127-8931
LOWER SIGNAL TO PUMP
PUMP GP IMPLEMENT & STEERINGPUMP 162-0324
RETURN MOTORFLUSHINGCIRCUIT
LPG 129-4258
H
H WINCHARRANGEMENT INLET MANIFOLD
SEE LOC I-6
G X
MANIFOLD GP INLET MANIFOLD WITH RELIEF 164-8913
DD
LS
CC PAY OUT
SEE LOC B-11
STEERRIGHT
STEER LEFT
STEER LEFT
VALVE GP COOLER BYPASS 119-9620
DOZER LIFT
VALVE GP CONTROL LIFT 162-8040
C2 LOWER
LOWER
C4
SINGLE TILT OPTION
TOP
SEE LOC B-5
1
BYPASS
TILT RIGHT
T A P
SUCTION
3
TILT LEFT
E
VALVE GP CONTROL TILT
WINCHCONTROL RIPPERCONTROL
VALVE GP CONTROLWINCH 232-4854
NOTE A 162-8041
ACCUMULATOR PILOTCIRCUIT 200-0750
NOTE D 216-8609
D
SOS
HAUL IN
P A T
ANGLE LEFT
XX
ANGLE RIGHT
T P A
SEE LOC E-2
BLADEANGLE
VAVLE GP CONTROL ANGLE 208-1492
TILT RIGHT
P A T
YY
TILT LEFT
S T AND ARD
D
MACHINEARRANGEMENTS
SEE LOC D-8
ZZ
Power Angle Tilt (PAT) Option
JOYSTICK THUMB SWITCH
POWER ANGLE TILT
VALVE GP SOLENOID 1
RAISE
2
3
TILT
4
P A T
NOTE I 200-0189
HOUSINGDRAIN
COVER VALVE STACK 169-9119
NOTE J 240-9654
ELEC.DET.
MANIFOLD 222-0417
NOTE K 206-7333
VALVE GP RIPPERPILOT 167-1177
PILOT SUPPLY
RAISE S
T A P
VALVE GP DOZER PILOT
NOTE C 206-4795
END COVER
4
T
E
RIGHT
SEE LOC D-8
TILT LEFT
SEE LOC D-9
3
CYLINDER GP ANGLE 203-0820
WW
XX
POWER ANGLE TILT (PAT)
ECM
C
LEFT JUNCTIONPLATE
TILT RIGHT
SEE LOC D-7
WW
3
D
LOWER
YY
SEE LOC D-7
RIPPERCONTROL
C
HOUSINGDRAIN
T P A
P A T
T H G I R E L G N A
RAISE
DOZERANGLE
ZZ T A P
B
T F E L E L G N A
WINCHCONTROL
VALVE GP CONTROLRIPPER 162-8042
CP VALVE GP SHUT-OFF 130-4531
TANK GP FILTER 197-0959
PAY OUT
RAISE ACC CP
LEFT SIDE A OF TRACTOR
( )
LOWER
3 S 0 - J , 5 B r 7 4 2 l o o 4 C , R e g a N P E 0 3 R
4
ELEMENT IMP RETURN 4T-0522
SEE LOC B-5
T
P A T
2
TILT RIGHT
PS
F
POWER ANGLE TILT (PAT)
FILTER GP CASE DRAIN RETURN: (ELEMENT 4T-6788) 9T-8999
CUGR A D E A C
A S T AND R D
TILT LEFT
VALVE GP TILT 166-2582
MANIFOLD BLADE TILT AND ANGLE CYL RELILEFS 212-3726
BB
RESOLVER VALVE 238-4986
A S T AND R D
C3
SINGLE TILT OPTION TILT RIGHT
K
AIR RELIEF
PRESSURELIMITER
CUGR A D A C E
G
CYL
TILT LEFT
VALVE GP BREATHER 3G-4783
DOZER TILT
T
AIR VENT
RAISE
RESOLVER VALVE 238-4986
U
SEE LOC B-5
RAISE
SEE LOC B-5
L
COOLER GP HYDRAULICOIL 169-3806
CUGR A D A C E
A S T AND R D
AND AR D S T
C1
PUMPFLUSHINGCIRCUIT
STEER RIGHT
WINCH AR 232-6203
HA
DUAL TILT OPTION
MB PRESSURELIMITER
CUGR A D A C E
NOTE A 9T-6095 IMP
MOTOR GP STEERINGMOTOR 159-7156
EE SEE LOC A-11
VALVE GP MANIFOLD PRESSUREREDUCING AND CHECK VALVES 162-0162
CYLINDER GP DUAL TILT
TILT LEFT
P
G
WINCHARRANGEMENT
DUAL TILT OPTION TILT RIGHT
NOTE B 239-0681
X
VALVE GP CONTROLSTEERING 107-1191
HAUL IN
F
VALVE GP COUNTERBALANCE LIFT CIRCUIT
A CCUGR AD E
LS
HB
STEERING
Locations: D-7, D-9, D-11, E-2
AccuGrade Option CUGR A D A C E
A S T AND R D
NOTE L 240-9655
PILOT DRAIN 1
T
S
2
3
T
S
C
4
4 FLOAT PILOT BOOST
FLOAT PILOT BOOST LOWER
Locations: C-5, E-8, E-10, F-8, F-10, I-3
Ripper / Winch Option
TILT LEFT TILT RIGHT
RIPPER COMPONENT
WINCH COMPONENT
RIPPER COMPONENT
WINCH COMPONENT
RIPPERCONTROL
ACCUGR AD E
WINCH CONTROL
CC
FREE SPOOL 2
1
3
4
SEE LOC G-11
ELEC. DET.
PILOTSUPPLY
PILOTDRAIN 1
T S
2
3
T
S
4
EE A
SEE LOC G-11
HAUL IN
PAY OUT
WINCHCONTROL
VALVE GP WINCH PILOT CONTROL 160-0766
Pressure Line
SEE LOC F-7
SEE LOC F-10
SEE LOC F-7
C1 C2 C3 C4
Pilot / Load Sensing Pressure
SENSOR GP PRESSURE 224-4535
B
Locations: C-12, E-9, H-6, I-12
Drain / Return Lines
Single / Dual Tilt Option
ComponentGroup T
SingleTilt
Dual Tilt
SingleTilt
Dual Tilt
Attachment Air Line CALLOUTS
HYDRAULICCIRCUITCOLORDESCRIPTIONS Implement Pump Output. Angle Cylinder Control Circuit. SteeringControlCircuit. TiltCylinderControlCircuit. Ripper / Winch Cylinder ControlCircuit. Supply Line. Drain / Return Line. Dozer Lift Cylinder Control Circuit.
SEE LOC F-10
LINEPATTERNS
HYDRAULIC COLOR LEGEND
B
YY
P
Componentsb ynumber
AA
Connections by letter
Note A: Only on DS and DS (CTCT) Note B: Only on AccuGrade Option
Taps (Pressure, Sampling,Sensor)byletter
1
B
NoteC:ForAnglePilot ControlPress PILOT SUPPLY
RAISE
VALVE GP 234-5126
PILOT DRAIN
Ripper / Winch Options
Tilt Options
NoteH:Steer, DozerLift/Tilt/Angle,RipperLift Note I: Only on DS
TILT LEFT
Note J: Only on DS (CTCT) TILT RIGHT
RESOLVER VALVE 233-6942
Location: F-1
NoteE:Steer, DozerLift/Tilt,Ripper
NoteG:Steer,Dozer Lift/Tilt,Winch
FLOAT PILOT BOOST LOWER
AccuGrade Options
Note D: Only on PAT and PAT (CTCT)
NoteF:Steer,DozerLift/Tilt
ARROWPATTERNS
THIS SCHEMATIC IS FOR THE D6R SERIES II - DS, DS (CTCT), PAT, PAT (CTCT) Part #: 172-0096 CHG03 D6R SERIES II - DIFF STR Part #: 238-1904 CHG03 D6R SERIES II - DS (CTCT) Part #: 211-3269 CHG04 D6R SERIES II - PAT Part #: 238-1903 CHG02 D6R SERIES II - PAT (CTCT)
Note K: Only on PAT Note L: Only on PAT (CTCT)
Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
A
