Transmision Electronica (D6R)

ELECTRONICALLY CONTROLLED TRANSMISSION SYSTEM TRACK-TYPE TRACTORS

© 1998 Caterpillar Inc.

D10R ELECTRONICALLY CONTROLLER POWER TRAIN SYSTEM TRANSMISSION FILTER

LEFT CLUTCH AND BRAKE

PRIORITY VALVE

POWER TRAIN PUMP

TORQUE CONVERTER

4

3

STEERING AND BRAKE VALVE

5 1 2

SELECTOR AND PRESSURE CONTROL VALVE FTC PARKING BRAKE

MONITORING ENGINE ECM SYSTEM I/O ECM ENGINE I/O CAT DATA LINK

SERVICE BRAKE

SERVICE TOOL ECM

POWER TRAIN AND STEERING I/O

ELECTRONIC POWER TRAIN AND STEERING CONTROL I/O

TORQUE CONVERTER OUTLET RELIEF VALVE TORQUE CONVERTER OIL FILTER

RIGHT CLUTCH AND BRAKE

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 BRAKE

MONITORING SYSTEM

ECM SERVICE BRAKE

CAT DATA LINK

D6R POWER TRAIN CONTROL SYSTEM

SERVICE TOOL

POWER TRAIN INPUTS AND OUTPUTS

FILTER

5

PRIORITY VALVE

1

STEERING AND BRAKE CONTROL VALVE 2 BRAKE LUBE

BRAKE LUBE

PUMP DRIVE LUBE TORQUE CONVERTER

4

3

TRANSMISSION CONTROL GROUP TRANSMISSION AND BEVEL GEAR LUBE

OUTLET RELIEF VALVE

COOLER

STEERING CLUTCHES AND BRAKES

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 CONVERTER OUTPUT ENGINE SPEED SPEED SENSOR SENSOR

SERVICE DIRECTIONAL POSITION CONNECTOR TRANSMISSION SENSOR OUTPUT TRANSMISSION HARNESS TRAMSMISSION SPEED INTERMEDIATE PLUG TEMPERATURE SENSORS SPEED SENSORS SENSOR

REVERSE SWITCH

AUTOSHIFT SWITCH

AUTO KICKDOWN SWITCH

UPSHIFT SWITCH 1F DOWNSHIFT SWITCH

HARNESS PLUG NO. 1 CLUTCH REVERSE

NO. 2 CLUTCH FORWARD

NO. 3 CLUTCH THIRD SPEED

PRIORITY VALVE NO. 4 NO. 5 SOLENOID CLUTCH CLUTCH SECOND SPEED FIRST SPEED

LAB A COMPONENT IDENTIFICATION

LAB B MACHINE OPERATION

Service Mode 30 110F08

SERV CODE

SERV CODE

LAB C ACCESS ELECTRONIC CONTROL SYSTEM MODES

ELECTRONIC CONTROL MODULE (ECM) INPUTS SPEED SENSOR

OUTPUTS PWM

FREQUENCY

6 TOTAL

PWM SENSOR

11 TOTAL

PWM

DRIVER

5 TOTAL SWITCH INPUTS

PWM SOLENOIDS

LED DRIVER 3 TOTAL

SWITCH

ON/OFF

ON/OFF SOLENOIDS 3 TOTAL

14 TOTAL CAT DATA LINK (INPUT AND OUTPUT)

MONITORING SYSTEM

TRANSMISSION MODULATING VALVE SOLENOID

PILOT VALVE

REDUCING SPOOL

ORIFICE

TO DRAIN

5

TO SUPPLY CLUTCH OIL

3

TRANSMISSION MODULATION CYCLE

PRESSURE AND CURRENT

FILL PULSE (C)

FILL CALIBRATION PARAMETERS (A)

ENGAGEMENT CALIBRATION PARAMETER (B)

CLUTCH ENGAGEMENT PRESSURE (D) MAXIMUM CLUTCH PRESSURE (G)

RAMP LEVEL(E) MODULATION (F)

HOLD LEVEL(H)

PULSE DELAY

PULSE TIME

RAMP TIME

HOLD TIME

DESIRED TIME

FULL ON 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 FILTER

LEFT CLUTCH AND BRAKE

PRIORITY VALVE

POWER TRAIN PUMP

TORQUE CONVERTER

4

3

STEERING AND BRAKE VALVE

5 1 2

SELECTOR AND PRESSURE CONTROL VALVE FTC PARKING BRAKE

MONITORING ENGINE ECM SYSTEM I/O ECM ENGINE I/O CAT DATA LINK

SERVICE BRAKE

SERVICE TOOL ECM

POWER TRAIN AND STEERING I/O

ELECTRONIC POWER TRAIN AND STEERING CONTROL I/O

TORQUE CONVERTER OUTLET RELIEF VALVE TORQUE CONVERTER OIL FILTER

RIGHT CLUTCH AND BRAKE

PRIORITY VALVE

FROM CONTROL SECTION

TO STEERING BRAKE AND TRANSMISSION CONTROLS

FROM LUBRICATION SECTION TO TORQUE CONVERTER

PRIORITY VALVE SOLENOID

FTC

PARKING BRAKE

MONITORING SYSTEM

ECM SERVICE BRAKE

CAT DATA LINK

D6R POWER TRAIN CONTROL SYSTEM

SERVICE TOOL

POWER TRAIN INPUTS AND OUTPUTS

FILTER

5

PRIORITY VALVE

1

STEERING AND BRAKE CONTROL VALVE 2 BRAKE LUBE

BRAKE LUBE

PUMP DRIVE LUBE TORQUE CONVERTER

4

3

TRANSMISSION CONTROL GROUP TRANSMISSION AND BEVEL GEAR LUBE

OUTLET RELIEF VALVE

COOLER

STEERING CLUTCHES AND BRAKES

LAB E TROUBLESHOOTING