Manual del Estudiante - D7R 2.PDF

D7R SERIES II T R A C K - T Y P E T R A C TO R S

© 2001 Caterpillar Inc.

STANDARD UNDERCARRIAGE ARRANGEMENT

XR UNDERCARRIAGE ARRANGEMENT

LGP UNDERCARRIAGE ARRANGEMENT

D7R SERIES II UNDERCARRIAGE ARRANGEMENTS

FUEL GALLERY

EUI EJECTORS PRESSURE REGULATOR

DISTRIBUTION BLOCK

SECONDARY ENGINE ECM FILTER TEMPERATURE (2 MICRON) SENSOR

PRIMING PUMP

PRIMARY FILTER RELIEF VALVE TRANSFER PUMP

PRIMING PUMP CHECK VALVES WATER SEPARATOR TANK

D7R SERIES II TRACK-TYPE TRACTOR COMPONENT IDENTIFICATION (DIFFERENTIAL STEER) QUICK-DROP VALVE

TORQUE DIVIDER

HYDRAULIC OIL COOLER POWER TRAIN PUMPS COOLER BYPASS VALVE

STEERING AND IMPLEMENT PUMP

IMPLEMENT CONTROL VALVES CASE DRAIN FILTER

TILLER LEVER

HYDRAULIC TANK

PRIORITY VALVE STEERING MOTOR

HYDRAULIC FILTER TRANSMISSION FILTER ACCUMULATOR AND PRESSURE REDUCING VALVE

BRAKE AND DIFFERENTIAL STEER MODULE TRANSMISSION

BRAKE VALVE

TORQUE DIVIDER ENGINE FLYWHEEL

PLANET GEARS

HOUSING

OUTLET PASSAGE

SUN GEAR

OUTPUT SHAFT STATOR

PLANET CARRIER RING GEAR

INLET PASSAGE

TURBINE IMPELLER

D7R SERIES II TRANSMISSION MODULATING VALVE TEST PORT VALVE BALL ORIFICE SPOOL SPRING

SOLENOID

PIN TO CLUTCH

FROM PUMP

POWER SHIFT TRANSMISSION RING GEARS

RING GEARS

INPUT SUN GEARS

INPUT SHAFT

OUTPUT SHAFT PLANETARY CARRIER

OUTPUT SUN GEARS

1

2

3

4

5

PRIORITY VALVE LOW PRESSURE

SUPPLY PRIORITY VALVE

SOLENOID VALVE

TO TORQUE CONVERTER

PRIORITY VALVE HIGH PRESSURE

SUPPLY PRIORITY VALVE

SOLENOID VALVE

TO TORQUE CONVERTER

POWER TRAIN HYDRAULIC SYSTEM D7R SERIES II WITH FINGER TIP CONTROL

FROM OIL COOLER STEERING AND BRAKE VALVE

4

TO TORQUE CONVERTER

3 5

PRIORITY VALVE 2

1 TRANSMISSION CONTROL GROUP

3

2

1

FROM CONVERTER SCAVENGE

PUMP SECTIONS 1. TORQUE CONVERTER CHARGING SECTION 2. TRANSMISSION CHARGING SECTION 3. TRANSMISSION AND TORQUE CONVERTER SCAVENGE SECTION

POWER TRAIN HYDRAULIC SYSTEM D7R SERIES II WITH DIFFERENTIAL STEERING

FROM OIL COOLER BRAKE VALVE

4

TO TORQUE CONVERTER

3 5

PRIORITY VALVE 2

1 TRANSMISSION CONTROL GROUP TO TRANSMISSION CASE 3

2

1

FROM CONVERTER SCAVENGE

PUMP SECTIONS 1. TORQUE CONVERTER CHARGING SECTION 2. TRANSMISSION CHARGING SECTION 3. TRANSMISSION AND TORQUE CONVERTER SCAVENGE SECTION

D7R SERIES II IMPLEMENT HYDRAULIC SYSTEM FINGER TIP CONTROL (BLADE HOLD)

INLET MANIFOLD MAIN RELIEF VALVE

PISTON BYPASS VALVE

CHARGING VALVE

TO ROD END

IMPLEMENT PUMP TO HEAD END

BLADE LIFT

BLADE TILT

VACUUM BREAKER

PRESSURE REDUCING AND CHECK VALVES

DUAL TILT

SINGLE TILT RIPPER RAISE

SHUTOFF VALVE

BLADE RAISE/LOWER RIPPER RAISE/LOWER

RIPPER SHANK IN/OUT

RIPPER TIP

BLADE TILT

SIGNAL NETWORK TO PUMP CONTROL VALVE INLET MANIFOLD RESOLVERS TO ROD END TO HEAD END TO ROD END TO HEAD END TO ROD END TO HEAD END TO ROD END TO HEAD END

DOZER LIFT DOZER TILT RIPPER LIFT RIPPER TIP

PRESSURE AND FLOW COMPENSATOR VALVE SIGNAL LINE FROM INLET MANIFOLD

ADJUSTMENT SCREWS

PRESSURE COMPENSATOR (CUTOFF) SPRING

FLOW COMPENSATOR (MARGIN) SPRING

TO TANK

TO ACTUATOR PISTON FLOW COMPENSATOR (MARGIN) SPOOL

FROM OUTPUT PORT PRESSURE COMPENSATOR (CUTOFF) SPOOL

PUMP AND COMPENSATOR OPERATION ENGINE OFF NO SIGNAL

PUMP OUTPUT LARGE ACTUATOR

YOKE PAD SWASHPLATE

DRIVE SHAFT

FLOW COMPENSATOR ( MARGIN) SPOOL

PRESSURE COMPENSATOR (CUTOFF) SPOOL

SMALL ACTUATOR AND BIAS SPRING PISTON AND BARREL ASSEMBLY

PUMP AND COMPENSATOR OPERATION LOW PRESSURE STANDBY NO SIGNAL

PUMP OUTPUT

PUMP AND COMPENSATOR OPERATION UPSTROKING SIGNAL

PUMP OUTPUT

REDUCED PRESSURE

PUMP AND COMPENSATOR OPERATION CONSTANT FLOW

SIGNAL

PUMP OUTPUT

REDUCED PRESSURE

PUMP AND COMPENSATOR OPERATION DESTROKING

SIGNAL

PUMP OUTPUT

INCREASED PRESSURE

PUMP AND COMPENSATOR OPERATION HIGH PRESSURE STALL SIGNAL AT MAXIMUM PRESSURE

PUMP OUTPUT AT MAXIMUM PRESSURE

D7R SERIES II LIFT CONTROL VALVE FINGER TIP CONTROL / HOLD ROD END

HEAD END MAKEUP VALVE

MAIN CONTROL SPOOL

FROM PREVIOUS VALVE

RESOLVER LOAD CHECK VALVE FROM INLET MANIFOLD

TO TILT CONTROL VALVE

TO COMPENSATOR VALVE

D7R SERIES II LIFT CONTROL VALVE FINGER TIP CONTROL / RAISE ROD END


MAIN CONTROL SPOOL

SIGNAL PASSAGE

FROM PREVIOUS VALVE

SIGNAL PORTS RESOLVER LOAD CHECK VALVE FROM INLET MANIFOLD

TO COMPENSATOR TO TILT VALVE CONTROL VALVE

D7R SERIES II LIFT CONTROL VALVE FINGER TIP CONTROL / FLOAT ROD END


MAIN CONTROL SPOOL

FROM PREVIOUS VALVE

RESOLVER LOAD CHECK VALVE FROM INLET MANIFOLD

TO COMPENSATOR TO TILT VALVE CONTROL VALVE

D7R SERIES II TILT CONTROL VALVE FINGER TIP CONTROL / HOLD HEAD END

ROD END

MAIN CONTROL SPOOL

FROM LIFT CONTROL VALVE

RESOLVER

LOAD CHECK VALVE FROM LIFT CONTROL VALVE TO RIPPER CONTROL VALVE

FLOW CONTROL VALVE

PRESSURE LIMITER TO VALVE COMPENSATOR VALVE

D7R SERIES II TILT CONTROL VALVE FINGER TIP CONTROL / TILT RIGHT HEAD END

ROD END

MAIN CONTROL SPOOL


RESOLVER


FLOW CONTROL VALVE


D7R SERIES II RIPPER CONTROL VALVE FINGER TIP CONTROL / HOLD MAKEUP VALVE

HEAD END

MAIN CONTROL SPOOL

ROD END

FROM TILT CONTROL VALVE

RESOLVER LOAD CHECK VALVE FROM TILT CONTROL VALVE


QUICK-DROP VALVE

PISTON BYPASS VALVES

QUICK-DROP VALVE TO IMPLEMENT VALVE

TO ROD END

DOZER LIFT TO IMPLEMENT VALVE

TO HEAD END

TO CYLINDERS (HEAD END)

TO CYLINDERS (ROD END)

PASSAGE TO PLUNGER END

QUICK-DROP VALVE HOLD

ORIFICE SLEEVE

VALVE SPOOL

PLUNGER

PASSAGE TO SPOOL END

TO/FROM LIFT CONTROL VALVE

TO/FROM LIFT CONTROL VALVE

FROM CYLINDERS (HEAD END)

TO CYLINDERS (ROD END)

QUICK-DROP VALVE RAISE


FROM CYLINDERS (ROD END)

QUICK-DROP VALVE LOWER



QUICK-DROP VALVE LOWER / QUICK-DROP



QUICK-DROP VALVE LOWER / DOWN PRESSURE

D7R SERIES II IMPLEMENT HYDRAULIC SYSTEM DIFFERENTIAL STEER (BLADE HOLD)

INLET MANIFOLD

STEERING MOTOR

STEERING

IMPLEMENT PUMP PISTON BYPASS VALVE TO ROD END

BLADE LIFT

TO HEAD END

RIPPER LIFT RIPPER TIP

BLADE TILT

DUAL TILT PRESSURE REDUCING AND CHECK VALVES

SINGLE TILT

RIPPER RAISE

SHUTOFF VALVE RIPPER RAISE/LOWER

RIPPER SHANK IN/OUT

RIPPER TIP

BLADE RAISE/LOWER

BLADE TILT

DIFFERENTIAL STEER COMPONENTS HYDRAULIC MOTOR INPUT

TRANSMISSION INPUT

TO RIGHT FINAL DRIVE

TO LEFT FINAL DRIVE

STEER DRIVE PLANETARY PLANETARY

EQUALIZING PLANETARY

DIFFERENTIAL STEER COMPONENTS STRAIGHT LINE OPERATION HYDRAULIC MOTOR INPUT

TRANSMISSION INPUT

TO LEFT FINAL DRIVE




DIFFERENTIAL STEER COMPONENTS LEFT TURN / FORWARD HYDRAULIC MOTOR INPUT

TRANSMISSION INPUT

TO LEFT FINAL DRIVE




FROM IMPLEMENT CONTROL VALVE

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP ENGINE OFF SMALL ACTUATOR

DRIVE SHAFT

MARGIN SPOOL

SWASHPLATE CUTOFF SPOOL

LARGE ACTUATOR

PISTON AND BARREL ASSEMBLY


MARGIN SPOOL

CUTOFF SPOOL

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP LOW PRESSURE STANDBY


MARGIN SPOOL

CUTOFF SPOOL

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP UPSTROKE


MARGIN SPOOL

CUTOFF SPOOL

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP CONSTANT FLOW


MARGIN SPOOL

CUTOFF SPOOL

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP DESTROKE


MARGIN SPOOL

CUTOFF SPOOL

TO INLET MANIFOLD

D7R SERIES II STEERING AND IMPLEMENT PUMP HIGH PRESSURE STALL

D7R SERIES II STEERING CONTROL VALVE DIFFERENTIAL STEER / HOLD TO NEXT CONTROL VALVE

PRIORITY FLOW CONTROL VALVE

PUMP SUPPLY LOAD CHECK VALVE

MAIN CONTROL SPOOL TO INLET MANIFOLD

RESOLVER

MAKEUP VALVE

STEER LEFT

STEER RIGHT

MAKEUP VALVE

FROM PREVIOUS VALVE

D7R SERIES II STEERING CONTROL VALVE DIFFERENTIAL STEER / STEER LEFT TO NEXT CONTROL VALVE

PRIORITY FLOW CONTROL VALVE

PUMP SUPPLY LOAD CHECK VALVE

MAIN CONTROL SPOOL TO INLET MANIFOLD

RESOLVER

MAKEUP VALVE

STEER LEFT

STEER RIGHT

MAKEUP VALVE

FROM PREVIOUS VALVE

LEFT TURN PASSAGE TO TANK CHECK VALVE

STEM

RIGHT TURN PASSAGE FROM PUMP CHECK VALVE

COUNTERBALANCE VALVE

CROSSOVER RELIEF

CROSSOVER RELIEF

D7R SERIES II COUNTERBALANCE VALVE AND STEER MOTOR STRAIGHT LINE OPERATION

STEERING MOTOR


STEM



CROSSOVER RELIEF

CROSSOVER RELIEF

D7R SERIES II COUNTERBALANCE VALVE AND STEER MOTOR RIGHT TURN

STEERING MOTOR


STEM



CROSSOVER RELIEF

CROSSOVER RELIEF

D7R SERIES II COUNTERBALANCE VALVE AND STEER MOTOR OVERSPEED

STEERING MOTOR

D7R SERIES II RIPPER CONTROL VALVE DIFFERENTIAL STEER / HOLD HEAD END

ROD END

MAKEUP VALVE MAIN CONTROL SPOOL FROM TILT CONTROL VALVE

RESOLVER

LOAD CHECK VALVE FROM TILT CONTROL VALVE

FLOW CONTROL VALVE

PRESSURE LIMITER VALVE


D7R SERIES II RIPPER CONTROL VALVE DIFFERENTIAL STEER / LOWER MAKEUP VALVE

HEAD END

ROD END

MAIN CONTROL SPOOL

FROM TILT CONTROL VALVE

RESOLVER

LOAD CHECK VALVE FROM TILT CONTROL VALVE

FLOW CONTROL VALVE

PRESSURE LIMITER VALVE


D7R SERIES II DOZER LIFT CONTROL VALVE DIFFERENTIAL STEER MACHINES / HOLD ROD END

HEAD END

MAKEUP VALVE

FROM TILT VALVE RESOLVER

TO INLET MANIFOLD

MAIN CONTROL SPOOL

LOAD CHECK VALVE

FROM INLET MANIFOLD TO TILT VALVE

SIGNAL PRESSURE LIMITER

D7R SERIES II TILT CONTROL VALVE DIFFERENTIAL STEER / HOLD HEAD END

ROD END

MAIN CONTROL SPOOL


RESOLVER


FLOW CONTROL VALVE


INPUT COMPONENTS • SWITCHES • SENDERS • SENSORS

SWITCH TYPE • UNCOMMITTED • PROGRAMMING • SERVICE

SENDER TYPE • 0 to 240 OHM • 70 to 800 OHM

SENSOR TYPE • PWM (DIGITAL) • FREQUENCY

OUTPUT COMPONENTS • MAIN DISPLAY MODULE • DISPLAY DATA LINK • ALERT INDICATORS • ACTION LAMP/ALARM

Manual del Estudiante - D7R 2.PDF

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