diagrama hidraulico de power train d8t interactivo
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INTERACTIVE SCHEMATIC
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Cover Page
Information
Schematic
Machine Views
Component Table
Tap Table
Fluid Power Symbols
Electrical Symbols
Front Frame
Rear Frame
Tap Views
Features
Options
Bookmarks X
EC-C3
EC-C2 E-C60
EC-C1
E-C61
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2005 Caterpillar, All Rights Reserved Printed in U.S.A
RENR7525-0August 200
D8T Track-Type Tractor
Power Train System
KPZ1-UP
J8B1-UP
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COMPONENT LOCATION
Description Part
Number
Machine
Location
Schematic
Location
PTO Pump (3 Section) 206-8703 1 C-5
PTO Filters / Priorityvalve Gp. 208-3015 2 A-4
Electronic Brake Control Valve 209-9360 3 E-6
Lube Dist. / Tc Inlet Relief Manifold 208-3023 4 E-5
Breather 185-6684 5 N/A
Torque Converter Outlet Relief Valve 208-3019 6 C-3
Oil Cooler 208-2352 7 B-1
Pump Inlet Screen / Housing Gp. 211-4323 8 C-5
Transmission Ar. 209-5636 9 E-6
Left Drive / Brake Gp. 211-2728 10 F-7Right Drive / Brake Gp. 211-2727 11 B-7
Torque Converter / Housing Gp. 207-5300 12 C-2
Dipstick 214-0628 13 N/A
Oil Fill Tube 9-1686 14 N/A
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TAP LOCATION
Tap
Number Description
Schematic
Location
B Brake Pressure E-6P Trans. Main Relief C-8
PV Priority Valve Pressure B-4
M T/c Supply Pressure D-3
N T/c Outlet Pressure D-3
L2 Flywheel Lube Pressure E-2
L1 Trans. Lube Pressure C-8
LB1 L Brake Lube Pressure F-6
LB2 R Brake Lube Pressure B-6
CL1 Trans. Clutch 1 Pressure C-7
CL2 Trans. Clutch 2 Pressure C-7
CL3 Trans. Clutch 3 Pressure D-7
CL4 Trans. Clutch 4 Pressure D-7
CL5 Trans. Clutch 5 Pressure D-7
AA Oil Sampling Port (Sos) B-4
BB Trans Filter Inlet Pressure A-4
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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
PRESSURE
COMPENSATION
PUMP: VARIABLE and
PRESSURE COMPENSATED
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNAL
SUPPLY PRESSU
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOIDor MANUAL
SOLENOIDand PILOT
SOLENOID andPILOT or MANUAL
COMBINATION CONTROLS
SOLENOID SERVO THERMAL DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOW IN ONEDIRECTION
FLOW ALLEITHER DIR
THREE
POSITION
CROSSFLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P T
SHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLE
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ELECTRICAL SYMBOLS
Hydraulic 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
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12345678
12345678
A
B
C
D
E
F
HYDRAULICCIRCUITCOLORDESCRIPTIONS
Brakes.
SupplyLine.
Drain/Return Line.
TransmissionandTorqueconverterScavengePump
LubricationandPowertrainOilCooler
TransmissionChargePump.
TorqueconverterChargePump
PinPullerAttachement
PROPORTIONALVALVE
THIS POWERTRAIN SCHEMATIC IS FOR THE D8T TRACK-TYPE TRACTOR
PART #: 223-2439 CHG 01
Components areshowninstalledona fully operablemachinewiththekey andengine
off andtransmissionshifterinneutral.
LINE PATTERNS
Drain/ ReturnLines
Component Group
Pilot / LoadSensingPressure
PressureLine
Attachment
AirLine
CALLOUTS
Taps (Pressure, Sampling,Sensor)by letterYY
FLYWHEELHOUSING
TORQUECONVERTER
(1) PTO PUMP
(3 SECTION)206-8703
LB1
BRAKELUBE
BRAKE LUBE
LB2
A B C
IMPLEMENT
PUMP
STEERING
PUMP
3RD 1ST2ND
EB BRAKE VALVE
BYPASS
TRANSMISSION
CONTROLVALVE
XMSNLUBE
FWD
VENTLINE
SUCTION SCREEN
MAINRELIEF
(3) ELECTRONIC BRAKE
CONTROL VALVE209-9360
ENGINE
SCREEN
C15
310NETHP
AT1850 RPM
TCOUTTEMPSENSOR-ECM
POWERTRAIN
OILCOOLER
CHECK VALVE
PRIORITY
VALVE
PV DRAINLINEDRAINS TO CASE
VIAFILLTUBE
(2) PTO FILTER /
PRIORITY VALVEGROUP
208-3015
M
L2
CL2
CL4
(4) LUBE DIST. MANIFOLD /
TC INLET RELIEF
208-3023
LOW
HIGH
PTO SUMPTEMP-ECM
(6) TORQUE CONVERTER
OUTLET RELIEF VALVE208-3019
PV
PROPORTIONALVALVE
PROPORTIONALVALVE
PROPORTIONALVALVE
PROPORTIONALVALVE
PROPORTIONALVALVE
BYPASS
BRAKEPRES
TAP
TRANS. MAIN
PRES. RELIEF TAP
P
L1
P T
C1 C2
S2S1
PINPULLERVALVE GP.
TRANSMISSIONSUMP
PINPULLERATTACHMENT
TRANSMISSION
DRIVESHAFT
CL3 CL5
P
B
ECPCXMSN
CLUTCHVALVES
REV
CL1
TRANS. LUBE
PRES. TAP
L1
CLUTCH/BRAKES
CLUTCH/BRAKES
N
SCAV T/C TRANS
BYPASS
SWITCH
TORQUE
CONVERTERCHARGE FILTER
TRANSMISSION
CHARGE FILTER
RIGHT BRAKE
PRESSURE PORT
LEFT BRAKEPRESSURE PORT
AA
BB
(10) LEFT DRIVEBRAKE GROUP
211-2728(9) TRANSMISSION ARRANGEMENT
209-5636
(8) PUMP INLET SCREEN
HOUSING GROUP211-4323
(11) RIGHT DRIVEBRAKE GROUP
211-2727
(7) OIL COOLER208-2352
(12) TORQUE CONVERTER
HOUSING GROUP
207-5300
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MACHINE COMPONENT LOCATIONS 1
LB1 12 121110 9 8 764
3 2
1
VIEW ALL CALL
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MACHINE COMPONENT LOCATIONS 2
Shown in the illustration above are the two, 6-micron power train oil filters and the priority
valve. They are located inside the forward compartment on the right fender
Removing the triangular deck cover (two bolts) just outside the
right door to the operator compartment gains access to thefollowing remote pressure test ports:
(L2) flywheel lube pressure(N) torque converter oulet relief pressure(M) torque converter inlet relief pressure
(14) oil fill tube(13) dipstick(5) power train breather
Located in the forward compartment on the right fender, and justahead of the hydraulic oil tank is the;
Lines Group - Powertrain Oil
FWD
POWERTRAIN OILTEMP SENSOR
PRIORITY VALVEDRAIN LINE
PRIORITY VALVESOLENOID
TRANSMISSIONFILTER INLET
TRANSMISSIONFILTER OUTLET
TRANSMISSIONFILTER OUTLETPRESSURE PORT(PLUG)
PTO Filter and Priority Valve Group
HYDRAULIC TANK
Powertrain OilGear Pump
Gear PumpInlet Screen
TRANSMISSION
CHARGE FILTER
TORQUECONVERTERCHARGE FILTER
The lube distribution manifold inlet is the upper port on the dual purpose
manifold body, located at the left, front of the main case. The lower port
is the outlet from the torque converter inlet relief valve.
Lube Distribution
Manifold Inlet
Outlet from the
Torque Converter
nlet Relief Valve
Priority Valve Group Components
TORQUE CONVERTERFILTER INLET
POWERTRAIN OILFILL TUBE
POWERTRAIN OILDIPSTICK
TORQUE CONVERTERFILTER OUTLET
POWERTRAIN OILBREATHER
CASE
Lube dismanifold
Outlet from thetorque converterinlet relief valve
PVBB AA
L2
L2
M
M
N
N
14
13
5
VIEW ALL CALL
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BRAKES
Brake pressure for the right brake may be tested by removing the plugand installing a test tap. Brake lube pressure (LB2) may be tested in a likemanner at the forward port. The test ports on the left side of the machineare reversed, for left brake pressure and left brake lube pressure (LB1).
Right BrakePressure Port Plug
LB2
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FRONT OF THE MAIN CASE
Torque converter relief valve and lubdistribution manifo
Electronic brake control valveSump suction
manifold screen
Three section
power train oil
pump
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POWERTRAIN OIL COOLER
Cooler Inlet
Cooler Outlet
Oil Cooler
The power train oil cooler is an oil-to-water type oil cooler and is
located at the right rear of the engine compartment.
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