ELECTRONICALLY CONTROLLED
TRANSMISSION SYSTEM
TRACK-TYPE TRACTORS
© 1998 Caterpillar Inc.
D10R ELECTRONICALLY CONTROLLER POWER TRAIN SYSTEM
TRANSMISSION LEFT CLUTCH
FILTER AND BRAKE
PRIORITY
VALVE
POWER TRAIN
PUMP
TORQUE
CONVERTER
3 4 STEERING
AND
BRAKE
5 VALVE
SELECTOR AND PRESSURE
CONTROL VALVE
FTC MONITORING ENGINE ECM
SYSTEM
PARKING I/O
BRAKE ECM
ENGINE I/O TORQUE CONVERTER
OUTLET RELIEF VALVE
CAT DATA SERVICE
LINK RIGHT CLUTCH
TOOL AND BRAKE
ELECTRONIC TORQUE CONVERTER
ECM POWER TRAIN OIL FILTER
SERVICE POWER TRAIN AND STEERING
BRAKE AND STEERING I/O CONTROL I/O
BENEFITS OF
ELECTRONICALLY CONTROLLED TRANSMISSIONS
1. Mechanical Linkages Eliminated
2. System Adjustments Performed Electronically
3. Design Changes and Updated Performed with Software
4. Reduced Operator Fatique
5. Smoother Shifts
6. Simplified Troubleshooting
FTC PARKING MONITORING
BRAKE SYSTEM D6R POWER TRAIN
SERVICE
CONTROL SYSTEM
TOOL
CAT
ECM DATA POWER TRAIN
LINK INPUTS
SERVICE
AND OUTPUTS
BRAKE
FILTER 5
PRIORITY
VALVE
1
STEERING AND BRAKE
CONTROL VALVE
2
BRAKE BRAKE STEERING CLUTCHES
4 3 TRANSMISSION
LUBE LUBE AND BRAKES
CONTROL GROUP
TRANSMISSION AND
PUMP BEVEL GEAR LUBE
DRIVE
LUBE OUTLET
RELIEF
TORQUE VALVE
COOLER
CONVERTER
POWER SHIFT TRANSMISSION
INTERMEDIATE AND FINAL
SPEED SENSORS
FINAL SPEED SENSORS
INTERMEDIATE
SPEED SENSORS
INPUT SHAFT
OUTPUT SHAFT
FINAL SPEED
SENSOR ROTOR
INTERMEDIATE SPEED
SENSOR ROTOR
ELECTRONICALLY CONTROLLED TRANSMISSION
D5M/D6M/D6R/D7R
TORQUE SERVICE DIRECTIONAL
TRANSMISSION CONNECTOR POSITION REVERSE SWITCH
CONVERTER
ENGINE OUTPUT OUTPUT TRANSMISSION SENSOR
HARNESS TRAMSMISSION
SPEED SPEED SPEED INTERMEDIATE
PLUG TEMPERATURE
SENSOR SENSOR SENSORS SPEED SENSORS AUTOSHIFT SWITCH
SENSOR
AUTO KICKDOWN SWITCH
UPSHIFT SWITCH
1F
DOWNSHIFT SWITCH
HARNESS PLUG
NO. 1 NO. 2 NO. 3 NO. 4 NO. 5 PRIORITY VALVE
CLUTCH CLUTCH CLUTCH CLUTCH CLUTCH SOLENOID
REVERSE FORWARD THIRD SPEED SECOND SPEED FIRST SPEED
LAB A
COMPONENT IDENTIFICATION
LAB B
MACHINE OPERATION
Service Mode
SERV
30 CODE
SERV
110F08 CODE
LAB C
ACCESS ELECTRONIC
CONTROL SYSTEM MODES
ELECTRONIC CONTROL MODULE (ECM)
INPUTS OUTPUTS
SPEED SENSOR FREQUENCY PWM PWM SOLENOIDS
6 TOTAL 11 TOTAL
PWM SENSOR PWM DRIVER LED DRIVER
5 TOTAL 3 TOTAL
ON/OFF
SWITCH INPUTS SWITCH ON/OFF SOLENOIDS
14 TOTAL 3 TOTAL
CAT DATA LINK
(INPUT AND OUTPUT)
MONITORING SYSTEM
TRANSMISSION
MODULATING VALVE
SOLENOID PILOT VALVE ORIFICE REDUCING SPOOL
TO TO
3 SUPPLY
5
DRAIN CLUTCH OIL
TRANSMISSION MODULATION CYCLE
FILL
PULSE FILL CALIBRATION ENGAGEMENT
(C) PARAMETERS (A) CALIBRATION
PARAMETER (B)
PRESSURE AND CURRENT
CLUTCH
ENGAGEMENT
PRESSURE (D)
MAXIMUM CLUTCH
PRESSURE (G)
RAMP LEVEL(E)
MODULATION (F)
HOLD LEVEL(H)
PULSE PULSE RAMP HOLD DESIRED FULL ON
DELAY TIME TIME TIME TIME TIME
PULSE WIDTH MODULATED SIGNALS
10%
ON
DUTY = 10%
CYCLE
OFF
50%
ON
DUTY = 50%
CYCLE
OFF
1 CYCLE
90%
ON
DUTY
= 90%
CYCLE
OFF
DUTY CYCLE = PERCENT OF TIME ON VS PERCENT OF TIME OFF
LAB D
TRANSMISSION CALIBRATION
D10R ELECTRONICALLY CONTROLLER POWER TRAIN SYSTEM
TRANSMISSION LEFT CLUTCH
FILTER AND BRAKE
PRIORITY
VALVE
POWER TRAIN
PUMP
TORQUE
CONVERTER
3 4 STEERING
AND
BRAKE
5 VALVE
SELECTOR AND PRESSURE
CONTROL VALVE
FTC MONITORING ENGINE ECM
SYSTEM
PARKING I/O
BRAKE ECM
ENGINE I/O TORQUE CONVERTER
OUTLET RELIEF VALVE
CAT DATA SERVICE
LINK RIGHT CLUTCH
TOOL AND BRAKE
ELECTRONIC TORQUE CONVERTER
ECM POWER TRAIN OIL FILTER
SERVICE POWER TRAIN AND STEERING
BRAKE AND STEERING I/O CONTROL I/O
FROM CONTROL SECTION
PRIORITY VALVE
TO STEERING BRAKE AND
TRANSMISSION CONTROLS
FROM
LUBRICATION SECTION
TO TORQUE
CONVERTER
PRIORITY VALVE
SOLENOID
FTC PARKING MONITORING
BRAKE SYSTEM D6R POWER TRAIN
SERVICE
CONTROL SYSTEM
TOOL
CAT
ECM DATA POWER TRAIN
SERVICE LINK INPUTS
BRAKE AND OUTPUTS
FILTER 5
PRIORITY
VALVE
1
STEERING AND BRAKE
CONTROL VALVE
2
BRAKE BRAKE STEERING CLUTCHES
4 3 TRANSMISSION
LUBE LUBE AND BRAKES
CONTROL GROUP
TRANSMISSION AND
PUMP BEVEL GEAR LUBE
DRIVE
LUBE OUTLET
RELIEF
TORQUE VALVE
COOLER
CONVERTER
LAB E
TROUBLESHOOTING
