caterpillar d11r cd carrydozer implement systems manual

Service TrainingMeeting Guide 700 SESV1700

August 1998

TECHNICAL PRESENTATION

D11R CD CARRYDOZERIMPLEMENT SYSTEMS

D11R CD CARRYDOZER IMPLEMENT SYSTEMSMEETING GUIDE 700 SLIDES AND SCRIPT

AUDIENCELevel II--Service personnel who understand the principles of machine systems operation, diagnosticequipment, and procedures for testing and adjusting.

CONTENTThis presentation describes the operation of the implement systems for the D11R CD Carrydozer. Thefunctions and operation of the keypad are also covered.

OBJECTIVES

After learning the information in in this presentation, the serviceman will be able to:

1. locate and identify all major components in the implement systems;2. locate and identify all filters, drains, and test points;3. explain the operation of each component in the implement systems;4. trace the flow of oil through the implement hydraulic system; and5. use the keypad to select the operating parameters and system features.

REFERENCESD11R CD Track-type Tractor Service Manual (9XR 1-Up) SENR1790D11R Track-type Tractor Service Manual (9TR 1-Up) SENR1775D11R CD Track-type Tractor Operation and Maintenance Manual (9XR 1-Up) SENR7022

PREREQUISITESInteractive Video Course "Fundamentals of Mobile Hydraulics" (CD ROM) TECD9001STMG 546 "Graphic Fluid Power Symbols SESV1546

SUPPLEMENTARY TRAINING MATERIAL

STMG 692 "D11R Track-type Tractor--Implement Systems" SESV1692STMG 527 "D11N Track-type Tractor--Part 2: Undercarriage, Implements, and Operator's Station" SESV1527Video Tape "D11R Track-type Tractor/D11R CD Carrydozer--Introduction" SEVN4173

Estimated Time: 2 HoursVisuals: 33 (2 X 2) SlidesServiceman Handouts: 8 Drawings/ChartsForm: SESV1700Date: 8/98

1998 Caterpillar Inc.

TABLE OF CONTENTS

INTRODUCTION ..................................................................................................................5

IMPLEMENT HYDRAULIC SYSTEM ................................................................................6Bulldozer Tilt Circuit ......................................................................................................11Dual Tilt Valve ................................................................................................................14Bulldozer Lift Circuit......................................................................................................19Fan Drive Hydraulic System...........................................................................................27Ripper and Pilot Circuits.................................................................................................29

ELECTRO-HYDRAULIC PILOT SYSTEM .......................................................................32

KEYPAD OPERATION .......................................................................................................35Hot Keys ........................................................................................................................37Operator Setup Menu......................................................................................................39Operation Parameters......................................................................................................47

CONCLUSION.....................................................................................................................58

SLIDE LIST..........................................................................................................................59

SERVICEMANS HANDOUTS ..........................................................................................60

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INSTRUCTOR NOTES

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3508B engine

1

INTRODUCTION

This presentation discusses the major design features of the implementsystems for the D11R CD Carrydozer (Serial Number 9XR 1-Up). TheD11R CD is an elevated sprocket design tractor equipped with the PowerTrain Electronic Control System, Finger Tip Control steering, ElectronicImplement Control, and Vital Information Display System (VIDS).This tractor is powered by the 3508B turbocharged and aftercooled enginerated at 634 kW (850 hp) with a 25 percent net torque rise for excellentlugging performance. The power from the engine is transferred through atorque divider that results in maximum torque multiplication during heavyloading.

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D11R CD CARRYDOZERIMPLEMENT SYSTEMS

1998 Caterpillar Inc.

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2

Continuous flow atminimum pressurewith controls in HOLD

Two section gear-typepump

Pilot operated controlvalves

DUAL TILT CONTROL VALVEAND DUMP VALVE

RIPPERCONTROL VALVE

HYDRAULIC TANK IMPLEMENT PUMP

FAN MOTOR ANDMAKEUP VALVE

OIL COOLER ANDBYPASS VALVE

FAN PUMPS

ELECTRO-HYDRAULICPILOT VALVE GROUP

ECM

IMPLEMENT HYDRAULIC SYSTEM COMPONENTS

IMPLEMENT HYDRAULIC SYSTEM

The implement hydraulic system for the D11R CD is a continuous flowdesign that permits minimum pressure in the system when the implementcontrol valves are not activated. The pump for operation of the bulldozerand ripper is a two section gear-type pump (large and small sections). Theoil cooling for the hydraulic circuits is provided by the fan circuit.

The system components include: the implement pump, electro-hydraulicpilot valve group, logic valve, demand control fan pumps, dozer controlvalve, dual tilt control valve, quick dump valve, and a ripper control valve.The system components control the flow of hydraulic oil to theappropriate implement cylinders.

Hydraulic tankcomponents:

- Oil fill tube

- Manual air vent

- Hydraulic oil filters

- Sight gauge

- Tank drain

- Fan return filter (notshown)

3

The hydraulic tank is located on the right fender just outside the operator'scompartment. The oil fill tube and cap are located on the top of the tank.Inside the fill tube is a fine mesh screen which removes large particles ofdirt or foreign material from the oil as the tank is filled. A manual airvent and the breaker relief valve (not visible) are located near the filters.The vacuum breaker relief valve has a pressure setting of 3.5 kPa (.5 psi)and a pressure relief setting of 210 kPa (30 psi). Two hydraulic oil filtersare located inside the tank. Also mounted at the front of the tank is a fanreturn filter, and below the right fender is a pilot supply filter. The oillevel sight gauge on the front of the tank permits an easy check of thehydraulic system oil level. Always clean the sight gauge to be sure the oillevel is visible. Dirt and stains on the glass frequently give theappearance of a full tank. A scheduled oil sampling (SOS) tap and tankdrain are located on the front of the tank.

NOTE: The capacity of the D11R CD hydraulic system isapproximately 314 Liters (83 gal.). The hydraulic tank shown in thisview is from the D11R 9TR Track-type Tractor.

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Componentidentification:

1. Dozer control lever

2. Blade DUMP orRACK BACK lever

3. Blade Auto Modeselect button

4. Blade Manual Modeselect button

4

The implement control levers for the D11R CD are not mechanicallyconnected to the dozer control valve. The dozer control lever and theripper control lever are input devices to an Electronic Control Module(ECM) located below the implement control levers. Moving the dozer control lever (1) forward or rearward LOWERS orRAISES the blade. Moving the lever left or right allows the blade toTILT LEFT or TILT RIGHT. The thumb lever (2) allows the operator toDUMP or TILT (RACK) BACK the blade. The left button (3) on the dozer control lever allows the operator toactivate the Automatic Modes. After the blade is loaded or the dig cycleis complete, the first push of the left button allows the blade to TILT(RACK) BACK to an operator pre-set carry position through the VitalInformation Display System (VIDS) keypad. The second push of the leftbutton begins the SPREADING portion of the cycle. The blade will raiseand pitch forward (or DUMP) automatically until the full stroke of the tiltcylinders and the lift cylinders is reached.

The Dump Mode will be cancelled if the operator attempts to TILT(RACK) BACK the blade or presses the right mode select button (4). Theright button (4) cancels the Automatic Mode, and the blade may becontrolled manually.

Located on the front of the dozer control lever is a trigger switch (notshown). When this switch is engaged, the blade will pitch forward toDUMP the blade load.

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3

5

6

7

8

4

2

1

5. Ripper RAISE orLOWER switch

6. SHANK IN or OUTswitch

7. Ripper park button

8. Implement controlsON or OFF switch

The ripper controls are located to the rear of the dozer control lever.Ripper RAISE and LOWER are controlled by the thumb switch (5) at thefront of the ripper controls. The finger switch (6) allows the operator tocontrol SHANK IN and SHANK OUT. Pushing the button (7) on theripper control raises the ripper to maximum height or will move the rippertip to the full SHANK IN position if configured through CaterpillarElectronic Technician (ET).

Located to the rear of the ripper controls is a deactivating switch (8) thatturns the power ON or OFF to the implement controls.

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Dozer control valve

Pilot operated dozerlift spool

Pilot operated bladetilt spool

Dozer control valvesimilar to 9TR

5

The dozer control valve is located below the operator's station on the rightside of the machine. Inside the control valve are two spools. One spoolcontrols blade lift and lower, and one spool controls blade tilt. The bladelift spool and the blade tilt spool are operated by pilot oil.

The pilot operated dozer lift spool has four positions: RAISE, HOLD,LOWER, and FLOAT. The pilot operated blade tilt spool has threepositions: TILT RIGHT, HOLD, and TILT LEFT.

The tilt circuit receives oil from the small (tilt) section of the pump.When the circuit is not in use, the oil joins the large pump section oil flowto the lift circuit. If neither circuit is in use, the dump valve opens andsends oil flow to the tank. Both the tilt and lift circuits have load checkvalves and relief valves. The lift circuit has makeup valves for both therod and head ends of the lift cylinders.

NOTE: The dozer control valve in the D11R CD is very similar to thedozer control valve in the D11R 9TR Tractor. The only majordifference is the pilot operated lift spool.

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6

A A

SECTION A-A

FROM SMALL PUMP

FROM LARGE PUMP

FROM PILOT VALVE

DOZER TILT SPOOLHOLD

TILT RIGHT TILT LEFT

LOAD CHECK VALVE

Bulldozer Tilt Circuit

The tilt spool has three positions: TILT RIGHT, HOLD, and TILT LEFT.The tilt spool is hydraulically operated by pilot pressure from a pilot valvegroup which is controlled by the ECM. In the HOLD position, the oilfrom the small pump goes around the tilt spool and joins the oil from thelarge pump. The oil then opens the dump valve and returns to the tank.

Tilt spool in HOLD

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7

Pilot oil moves tiltspool to right

Pressure opens loadcheck valve

Oil goes to tilt cylinderto retract rod

A A

SECTION A-A

DOZER TILT SPOOLTILT RIGHT

TILT RIGHT TILT LEFT

FROM SMALL PUMP

FROM LARGE PUMP

FROM ELECTRO-HYDRAULICPILOT VALVE MANIFOLD

LOAD CHECK VALVE

Movement of the dozer control lever to the right sends an electrical signalto the ECM. The ECM then sends an output signal to a proportionalsolenoid on the electro-hydraulic pilot valve manifold. As the solenoidopens, pilot oil flows to the left end of the tilt spool. The pilot oil pressuremoves the spool to the TILT RIGHT position.

In the TILT RIGHT position, the oil from the small (tilt) section of thepump cannot combine with the oil from the large section, and the pressureof the oil increases. The increased pressure opens the load check valve.Before the start of flow to the left cylinder, oil passes through a small holein the tilt relief valve and fills the large spring chamber between the reliefspool and the poppet. This condition raises the pressure setting of the tiltrelief valve. As the tilt spool moves farther, the pump flow is sent to theleft tilt cylinder, and the supply pressure increases due to the load.

Tilt circuit relief valve

The CD machine is only equipped with dual tilt. In the TILT RIGHTposition pump oil is sent to the head end of the left tilt cylinder, whichpushes oil to the rod end of the right tilt cylinder. Lever movement to theleft sends pilot pressure oil to the right end of the spool. The spool movesto the left, sending small pump oil to the right tilt cylinder, and the bladetilts left. When the blade control lever is released from either the TILTRIGHT or TILT LEFT position, springs return the tilt spool to the HOLDposition.

When the dozer control lever is released, the pilot oil at the left end of thetilt spool is drained. The spring at the right end of the tilt spool moves thespool to the HOLD position. In the HOLD position, the oil in the headand rod ends of the tilt cylinders is blocked. The tilt angle of the bladewill not change until the dozer control lever is moved.

To summarize, with the tilt spool in the TILT RIGHT position, flow fromthe small section of the pump does not combine with flow from the largesection. Pilot oil at the left end of the tilt spool moves the spool to theright. Flow from the small section of the pump goes around the tilt spooland is sent to the head end of the left tilt cylinder.

Because the small (tilt) section flow cannot combine with the oil in thecenter chamber, the dump valve for the dozer lift circuit does not controlthe tilt circuit pressure. Instead, the tilt relief valve (at the top of the valvebody) is used to limit the pressure in the tilt circuit. When the tilt cylinderpressure increases to 24825 kPa (3600 psi), the pilot valve for tilt reliefwill open and drain the spring chamber behind the valve spool. Thiscondition permits the valve spool to open and limit the pressure in the tiltcircuit.

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8

Dual tilt valve has twomodes:

- TILT LEFT or RIGHT

- DUMP or RACKBACK

Solenoid valve hastwo positions

Trigger switchactivates S1 coil

Thumb switchactivates S1 coil

S1

TILTCYLINDERS

FROMELECTRO-HYDRAULIC

PILOT MANIFOLD

FROM BLADETILT VALVE

TO HEAD END

TO ROD END

DUAL TILT SOLENOID VALVEHOLD

Dual Tilt Valve

The dual tilt solenoid valve provides the blade tilt circuit with twodifferent modes of operation: DUAL TILT (LEFT or RIGHT) and DUMPor TILT (RACK) BACK. The control valve is located between theradiator grill doors and the radiator on the left side of the machine. Thevalve is activated by pilot oil pressure supplied by the fan circuit. Thedual tilt valve contains a spring centered, hydraulically actuated spoolvalve and an electrically actuated solenoid control valve.

The solenoid valve contains two coils and has two different positions.Only one coil (S1) is used in this application. When the solenoid is notactivated, the system operates in the DUAL TILT Mode. When the thumbswitch on the dozer control lever is moved left, the S1 coil in the solenoidvalve is energized and the system operates in the TILT (RACK) BACKMode. When the trigger switch on the dozer control lever is depressed, orthe thumb switch is moved to the right, the system also energizes the S1coil in the solenoid and activates the DUMP Mode.

Tilt cylinders containbypass valves

Both the left and right tilt cylinders pistons contain bypass valves. Thesevalves allow the completion of the tilt operation. When one of thecylinders reaches the end of its travel, the oil goes through the bypassvalve to continue filling the other cylinder.

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9

Dual tilt operation

TILT RIGHT

Cylinders move inopposite directions

FROM TILTCONTROL VALVE

TO TILTCONTROL VALVE FROM FAN CIRCUIT

FROM TRIGGER SWITCH

LEFT TILTCYLINDER

RIGHT TILTCYLINDER

TO HEAD END

TO ROD END

DUAL TILT CIRCUITTILT RIGHT

DUAL TILT is standard on the D11R CD. In the DUAL TILT Mode, oilflow is blocked at the solenoid valve and the dual tilt directional spoolremains centered by the spring force. Movement of the tilt cylinders inopposite directions causes the blade to tilt.

When the operator moves the dozer control lever to the TILT RIGHTposition, supply oil from the dozer control valve tilt circuit is sent to thehead end of the left tilt cylinder. This condition causes oil from the rodend of the left tilt cylinder to be forced back to the dual tilt control valve.The oil travels around the spool and is directed to the rod end of the righttilt cylinder. As the right tilt cylinder retracts, the oil in the head end ofthe cylinder is directed back through the dual tilt control valve and thedozer tilt control valve to the tank.

This action of the tilt cylinders causes the blade to tilt to the right. Whenthe control lever is released, the oil is blocked at the control valve, and theblade remains tilted to the right until the control lever is moved again.

Bypass valveprovides fullretraction formaximum blade tilt

The bypass valve in the left tilt cylinder piston allows oil to continueflowing to the right cylinder after the rod is fully extended from the leftcylinder. The bypass valve allows oil to continue to flow to the right tiltcylinder rod end and provides full retraction for maximum blade tilt.

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10

Trigger switchenergizes S1 coil

BLADE DUMP

Quick-dump valve

Thumb lever leftallows RACK BACK

FROM TILTCONTROL VALVE

TO TILTCONTROL VALVE

LEFT TILTCYLINDER

RIGHT TILTCYLINDER

TO HEAD END

TO ROD END

FROM FAN CIRCUIT

FROM TRIGGER SWITCH

DUAL TILT CIRCUITBLADE DUMP

FROM QUICK-DUMP VALVE

To pitch (or dump) the blade forward, the trigger switch on the dozercontrol lever is depressed and the S1 coil in the solenoid valve isenergized. The valve directs pilot oil from the solenoid valve to the lowerend of the directional spool and opens the upper end of the spool to drain.The valve spool then shifts up against the spring force to the BLADEDUMP mode.

For BLADE DUMP, flow from the dozer tilt circuit is sent to the head endof the left tilt cylinder. As the cylinder extends, oil from the rod end ispushed back to the dual tilt valve and is directed to the head end of theright tilt cylinder. The oil in the rod end of the right tilt cylinder is pushedback through the dual tilt valve to the hydraulic tank. As both tiltcylinders extend, the blade dumps forward.

When the trigger switch is depressed for blade DUMP, the quick-dumpvalve located below the dual tilt valve is also activated. The quick-dumpvalve offers regenerative flow to prevent cylinder voiding.

When the trigger switch is released, the oil is blocked at the control valveand the blade remains pitched forward until the thumb lever is moved tothe left or TILT (RACK) BACK Mode.

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11

Lift spool in HOLD

DOZER LIFT SPOOLHOLD

FROMLARGE PUMP

LIFT RELIEFVALVE

LIFT SPOOL

FROM RIPPER VALVESIGNAL PORT TO ENGINE

RETARDER SOLENOID

Bulldozer Lift Circuit

The lift spool has four positions: RAISE, HOLD, LOWER, and FLOAT.The lift spool is hydraulically operated by pilot oil from the electro-hydraulic pilot valve manifold. Movement of the dozer control lever tothe rear sends an electrical signal to the ECM. The ECM sends an outputsignal to a solenoid on the electro-hydraulic pilot valve manifold. Thesolenoid valve opens and sends pilot oil to the left end of the lift spool.The spool shifts to the right and directs oil from the large pump to the rodend of the lift cylinders, causing the blade to RAISE. Forward movementof the dozer control lever sends pressure oil to the head end of the liftcylinders, causing the blade to LOWER.

FLOAT operation To operate the dozer in FLOAT, the operator must "arm" the dozer controllever by pressing the float button on the Vital Information Display System(VIDS) keypad. When the button is pressed, a light located below thekeypad illuminates, indicating the FLOAT Mode is armed. The levermust be moved to the maximum forward position and then released. Thelever will return to the neutral position, but the blade will be operating inthe FLOAT Mode. If no active faults are present, the message center willdisplay "FLOAT" when the FLOAT Mode is active. Moving the controllever, pressing the float Hot Key on the keypad, or pressing the ManualMode selector button on the control lever will deactivate the FLOATMode.

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12

HOLD position

SECTIONA-A

FROM SMALL PUMP

FROM PILOT VALVE

FROM LARGE PUMP

TO ROD ENDTILT CYLINDER

TO HEAD ENDTILT CYLINDER

LIFT RELIEFVALVE

TILT RELIEFVALVE

DOZER CONTROL VALVE

FROM PILOTMANIFOLD

TILT SPOOL

SHUTTLE VALVE


RETARDER SOLENOID

HOLD

FROM PILOTMANIFOLD

When the valve spools in both the dozer control valve and the rippercontrol valve are in the HOLD position, the pressure of the supply oil(from both the small and large sections of the pump) through the dozercontrol valve is maintained at approximately 700 kPa (100 psi).The dozer lift spool is a "closed-center" spool, and the blade tilt spool isan "open-center" spool. In this view, both spools are in the HOLD (orcenter) position. Oil from the large pump section enters the valve and fillsthe chamber in the center of the valve body. Flow from the small sectionof the pump enters the valve body, flows around the open-center tilt spool,and joins with the oil from the large section in the center chamber. All theoil around the closed-center lift spool is blocked. Because both spools arein the HOLD position, no oil flows to or from the lift and tilt cylinders,and the load check valves do not open.

.

Dump valve The spring for the dump valve plus the pressure of the oil in the tank havea combined force that provides a restriction to flow. When the pressure inthe center chamber increases above the spring force plus the tank oilpressure, the dump valve will open and permit the combined flow fromthe two sections of the pump to return to the tank. With both spools in theHOLD position, the dump valve provides a constant low system pressurewhich is available for instant implement response or for "feathering"action of the controls when activated by the operator.

The shuttle valve resolves which hydraulic function (dozer raise andlower or ripper) will provide pressure feedback to the spring chamber ofthe dump valve. The shuttle valve is spring biased to the dozer lift andlower function. The stem shifts to the right when oil pressure is directedto the ripper valve port of the dozer control valve when the ripper functionis requested by the operator or during an engine overspeed condition.When the lift spool is in the HOLD or center position, the spring chamberof the dump valve is connected to the tank. Tank pressure is transmittedthrough passages in the lift and lower spool that travel through the ballresolver valve and the shuttle valve before filling the spring chamber ofthe dump valve. During blade lift and lower functions, the cylinder loadpressure signal is transmitted to the ball resolver valve, through the shuttlevalve, to the spring chamber of the dump valve. This path is the same aswhen the spool is in the HOLD position. The cylinder load pressuresignal is from the lift cylinder rod end during lift and from the cylinderhead end during lower or float. The ball resolver valve directs the higherof either the cylinder rod or head end pressure to the shuttle valve.

When the shuttle valve spool is moved completely to the left, pressure oilfrom the center chamber cannot fill the spring chamber of the dump valve.For this reason, only the dump valve springs plus the tank oil pressure areregulating the pressure in the center chamber. This pressure will remainlow as long as the lift and tilt spools are in the HOLD position, and theripper circuits are not activated.

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Shuttle valve

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13

Dozer RAISE

FROM SMALL PUMP

FROM LARGE PUMP

ROD END LIFT CYLINDER

HEAD END LIFT CYLINDER

TO ROD ENDTILT CYLINDER

TO HEAD ENDTILT CYLINDER


RETARDER SOLENOID

FROM PILOTMANIFOLD

DOZER CONTROL VALVERAISE

This view of the dozer control valve shows spool movement and oil flowwhen the control lever is moved to the RAISE position. Movement of thedozer lift spool to the RAISE position opens the chamber at the left centerof the spool, which is connected to the rod end of the lift cylinders. Sincethe oil around the lift spool is no longer blocked, pressure oil from thecenter chamber of the valve body can open the load check valve and flowaround the lift spool to the rod end of the lift cylinders.

At the same time that pressure oil is sent to the lift cylinders, oil alsoflows to the ball resolver valve. The ball resolver valve operates similarlyto a check valve. With the lift spool in the RAISE position, the ballresolver valve permits pressure oil to flow to the shuttle valve, but blocksflow to the head end and tank at the right end of the ball resolver valve.

Dump valve convertedto pilot operated reliefvalve

During blade RAISE, the lift cylinder rod end pressure is transmitted tothe spring chamber of the dump valve through the ball resolver and theshuttle valve. The dump valve uses the rod end cylinder pressurecombined with the spring to move the dump valve to the right until thesupply pressure is 700 kPa (100 psi) above the cylinder pressure. If thepressure in the dump valve spring chamber reaches 24135 kPa (3500 psi)due to cylinder load or an end stroke condition, the relief valve will openand allow the spring chamber oil to drain to the tank. When oil is allowedto drain from the dump valve spring chamber, the dump valve moves tothe left and allows pump flow to pass around the dump valve to the tank.This operation prevents the system pressure from exceeding 24135 kPa (3500 psi) during blade RAISE or LOWER.An additional condition can exist during dozer operation which is referredto as "feathering the blade." If the operator moves the control lever asmall distance to gradually raise the blade, flow to the cylinders goesthrough the throttling slots in the lift spool. Flow through the throttlingslots can create the same effect as an orifice by restricting the flow of oilto the lift cylinder. This restriction to flow causes a pressure differencebetween the oil in the center chamber of the valve body (system pressure)and the oil transmitted to the spring chamber of the dump valve (cylinderpressure). If the pressure difference is greater than the spring force, thedump valve will open and permit some of the pump flow to return to thetank at the same time that oil flows to the lift cylinders.

The load check valve is used to prevent reverse oil flow from the cylinderswhich can cause "cylinder drift."

When the lift spool is in the FLOAT position, the load check valve isopen. The supply oil in the center chamber goes through the open loadcheck valve to the head end of the lift cylinders. The center chamber isalso open to the tank. The weight of the blade is the force that moves thedozer down. The oil from the rod end of the lift cylinders is also open tothe tank when the lift spool is in the FLOAT position. When an outsideforce moves the blade up, the pressure of the oil in the rod end of the liftcylinders decreases as the rods retract. The pressure of the oil in the rodend circuit is less than the pressure in the head end circuit. The higherpressure in the head end circuit opens a makeup valve to fill the rod endcircuit as needed.

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Blade "feathering"

Load check valveprevents drift

FLOAT position

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14

Dump valve has fourfunctions:

1. Release pump flowwith levers in HOLD

2. Pressurecompensation valvefor pump

DOZER LIFT SPOOLHOLD

FROMLARGE PUMP

LIFT RELIEFVALVE

LIFT SPOOL


RETARDER SOLENOID

The dump valve in the dozer control valve has four different functions inthe dozer lift and ripper circuits.

When the blade lift and ripper control spools are in the HOLD position,the pressure in the spring chamber of the dump valve is the same as tankpressure plus 700 kPa (100 psi), which is the value of the spring. Duringblade RAISE or LOWER, the pressure in the spring chamber of the dumpvalve is the same as the pressure in either the head end or rod end of thelift cylinders. This pressure is felt through the ball resolver valve and theshuttle valve. With the cylinder pressure plus the spring force behind thedump valve, the supply pressure will be raised to a level of 700 kPa (100 psi) above the cylinder pressure. Flow control and fine modulationare possible because of the constant 700 kPa (100 psi) pressure behind thedump valve.

3. Flow control

4. Relief valve formain systemoperation

When the ripper control spools are activated, pilot oil (from the rippersolenoid valve controlled by the implement ECM) is sent to the left end ofthe shuttle valve and moves the shuttle valve to the right. When theshuttle valve is moved, supply oil fills the spring chamber behind thedump valve. The relief valve and the dump valve now function as thepressure limiter for the ripper circuit. Because oil from the small pumpsection goes to both a passage in the dozer control valve and to the rippercontrol valve, the pressure of the oil is always the same in both places.

When the lift spool is in the RAISE or LOWER position, cylinderpressure is transmitted to the spring chamber of the dump valve throughthe ball resolver valve and the shuttle valve. A pressure relief valve islocated within the dump valve spring chamber. This valve will lift off itsseat and allow the spring chamber oil to drain when the pressure in thespring chamber reaches 24135 kPa (3500 psi). When the relief valveopens, an imbalance exists between the pressure in the center chamberand a combination of the dump valve spring and the pressure in the springchamber. A balance is achieved when the dump valve shifts to the leftallowing oil in the center chamber to drain until the pressure in the centerchamber is equal to the dump valve spring plus the spring chamberpressure. This method of controlling maximum system pressure is calleda pilot operated relief valve.

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15

Fan pumps part ofhydraulic system

Demand control fansystem equipped withtandem axial pumps

SOLENOID

FAN DRIVEMOTOR

RADIATOR

OIL COOLER

OILCOOLERBYPASSVALVE

FAN DRIVEHYDRAULIC SYSTEM

TO ELECTRO-HYDRAULICPILOT MANIFOLD

FANPUMPS

SUCTION LINE CASE DRAIN LINE

FAN PUMP CASEFLUSHING FLOW

TANK

PILOTSUPPLYFILTER

FAN RETURNFILTER

Fan Drive Hydraulic System

The demand control fan system on the D11R CD is considered part of theimplement hydraulic system because the fan pumps pull oil from theimplement hydraulic tank and send some of the oil to the electro-hydraulicpilot valve manifold group. Pilot oil hydraulically shifts the blade lift andtilt spools in the dozer control valve and also shifts the spools in the rippercontrol valve to control ripper lift and ripper tip.

Fan pumps

16

The tractor is equipped with two hydraulic pumps for the demand controlfan system. The tandem axial pumps are located below the floor plate onthe right rear of the engine and are driven off the flywheel. The frontpump is a variable displacement pump and the rear pump is a fixeddisplacement pump. The system adjusts the fan speed to match thecooling system demands based on an input signal to the engine ElectronicControl Module (ECM) from the engine coolant temperature sensor.

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Ripper control valve

17

Ripper and Pilot Circuits

The ripper control valve has two spools (lift and tip), two makeup valves(one for the head end of the ripper lift cylinders and one for the head endof the ripper tip cylinders), and a load check valve. The ripper lift spool isoperated with pilot oil pressure and has three positions: RAISE, HOLD,and LOWER. The ripper tip spool is operated by pilot oil pressure andalso has three positions: SHANK IN, HOLD, and SHANK OUT. Thevalve spools have no detent positions.

Movement of the thumb lever on the ripper control lever causes the ripperto RAISE or LOWER. Moving the finger lever on the ripper control levercontrols SHANK IN or SHANK OUT. The button on the ripper controllever activates the automatic raise and park feature.

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18

RIPPER RAISE When the operator requests the RIPPER RAISE function, an electricalsignal from the ripper thumb switch is sent to the ECM. The ECM sendsan output signal to the ripper raise solenoid on the pilot manifold. Thesolenoid valve opens, sending pilot oil to the upper end of the ripper liftspool.

At the same time, the ECM sends a signal to the ON/OFF solenoid valve.The ON/OFF solenoid energizes, allowing pilot oil to flow to the shuttlevalve in the dozer control valve. The shuttle valve shifts to the right andallows oil from the center chamber to flow to the spring chamber of thedump valve, which now functions as the relief valve for the ripper circuit.When the shuttle valve is shifted, the oil from the implement pump isdirected to the load check valve in the ripper control valve. The increasedpressure opens the load check valve and allows oil to flow to the rod endof the ripper lift cylinders to RAISE the ripper.

NOTE: When calibrating the ripper solenoids, it is necessary to useCaterpillar Electronic Technician (ET) Version 2.3 or newer.

TO DOZERCONTROL VALVE

RIPPER AND PILOT SYSTEMSRAISE

LOAD CHECKVALVE

IMPLEMENTPUMP

RIPPER LIFTSPOOL

RIPPER TIPSPOOL

ON/OFFSOLENOID

VALVE

BLADERAISE

TILTRIGHT/DUMP

RIPPERLOWERTIP IN

TIPOUT

RIPPERRAISE

TILTLEFT/RACK

BLADELOWER/FLOAT

MAKEUPVALVE

FAN PUMPS

LIFTCYLINTERS

STMG 700 - 31 -8/98

19

RIPPER LOWER When the operator requests a RIPPER LOWER function, an electricalsignal from the ripper thumb switch is sent to the ECM. The ECM sendsan output signal to the ripper lower solenoid on the pilot manifold. Thesolenoid valve opens, sending pilot oil to the lower end of the ripper liftspool.

At the same time, the ECM sends a signal to the ON/OFF solenoid valve.The ON/OFF solenoid energizes, allowing pilot oil to flow to the shuttlevalve in the dozer control valve. The shuttle valve shifts to the right andallows oil to flow to the spring chamber of the dump valve, which nowfunctions as the relief valve for the ripper circuit. When the shuttle valveis shifted, the oil from the implement pump is directed to the load checkvalve in the ripper control valve. The increased pressure opens the loadcheck valve and allows oil to flow to the head end of the ripper liftcylinders to LOWER the ripper. If the ripper drops faster than the pumpcan makeup due to the ripper weight, the makeup valve opens and allowsdrain oil to go to the head end of the cylinders to prevent cylinder voiding.

TO DOZERCONTROL VALVE

RIPPER AND PILOT SYSTEMSLOWER

LOAD CHECKVALVE

IMPLEMENTPUMP

RIPPER LIFTSPOOL

RIPPER TIPSPOOL

ON/OFFSOLENOID

VALVE

BLADERAISE

TILTRIGHT/DUMP

RIPPERLOWERTIP IN

TIPOUT

RIPPERRAISE

TILTLEFT/RACK

BLADELOWER/FLOAT

MAKEUPVALVE

FAN PUMPS

LIFTCYLINDERS

STMG 700 - 32 -8/98

20

Blade functions

ELECTRO-HYDRAULIC PILOT SYSTEM

The implement system for the D11R CD is operated by pilot oil. This oilcomes from the fan pump to a manifold that is located below the floorplate on top of the main case. This manifold includes an ON/OFFsolenoid that allows the implement control levers to function or blocks theflow to the electro-hydraulic "main gallery." The manifold also containsfour proportional solenoids that control the amount of pilot oil that isdirected to the dozer control valve. This pilot oil is sent to the ends of thetilt or lift spool and control BLADE LIFT, BLADE LOWER/FLOAT,BLADE TILT LEFT, and BLADE TILT RIGHT. The ECM receives asignal from the dozer control lever when the operator requests a bladefunction. The ECM sends an output signal to the appropriate solenoid.The solenoid opens proportionally to the signal received from the ECM.The higher the signal, the more the solenoid opens to allow more flow tothe spool. When the automatic feature is activated by the operator, theECM also sends output signals to all the appropriate solenoidssimultaneously, allowing the automatic blade functions.

FROM LIFTCYLINDER

ELECTRO-HYDRAULICPILOT SYSTEM

HOLDON/OFF

SOLENOIDVALVE

SHUTTLEVALVE

PRESSUREREDUCING

VALVES

TESTPORT

BLADERAISE

TILTRIGHT/DUMP

RIPPERLOWERTIP IN

TIPOUT

RIPPERRAISE

TILTLEFT/RACK

BLADE LOWER/FLOAT

TO RIPPER TIP SPOOL

TO RIPPER LIFT SPOOL

TO RIPPER TIP SPOOL

TOFAN

MOTOR

FANPUMPS

TO DOZER TILT SPOOL

TO DOZER LIFT SPOOL

TO DOZER LIFT SPOOLTO DOZER TILT SPOOL

TO DOZER TILT SPOOL

Ripper functions If the tractor is equipped with a ripper, the pilot manifold will consist oftwo additional bolt-on blocks. These blocks contain four moreproportional solenoids that direct pilot oil to the ripper control valve toselect RIPPER RAISE, RIPPER LOWER, SHANK IN, and SHANKOUT. When the operator requests a ripper function, the correspondingripper switch sends a signal to the ECM. The ECM sends an outputsignal to the appropriate solenoid on the pilot manifold which directs pilotoil to the appropriate spool end.

The ripper control also contains an automatic park button. When thisbutton is pushed by the operator, the ECM sends a signal that RAISES theripper to the maximum height and moves the shank to the full SHANK INposition if configured through Caterpillar Electronic Technician (ET).NOTE: The charts in Serviceman's Handouts No. 1, 2, and 3 showwhich solenoids are activated by the ECM when the operator requestsan implement movement.

STMG 700 - 33 -8/98

Implement lockoutswitch (arrow)

21

If the implement lockout switch (arrow) is switched to the lockedposition, the VIDS display will read IMPLMTS_OFF. When the operatorswitches the implement lockout switch back to the unlocked position, themode will be set to MANUAL.

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Key functions

Left side of keypad:

1. Key pressedindicator

2. OK key

3. MENU key

4. CANCEL key

5. HELP key

6. MORE key

7. Backward key

8. Forward key

9. GAUGE key

10. SETUP key

22

KEYPAD OPERATION

The keypad, located to the right of the operators compartment above thedozer control lever, allows the operator or service technician tocommunicate with the VIDS monitor module. The operator or servicetechnician can select what information to show on the display and alsoinitiate service procedures. The keypad also allows the operator to enteran identification number to recall stored parameters and to acknowledgeevents.

The key pressed indicator (1), located above the OK key (2), flashes onceeach time a key is pressed. This flash notifies the operator or the servicetechnician that the keystroke was accepted.

The keypad will not accept an input when an active event is present andflashing on the message center. To proceed, the operator or servicetechnician must acknowledge the event by pressing the OK key.

When a series of related keystrokes (operator ID or menu operations) isentered, consecutive keystrokes must be less than five seconds apart.Periods longer than five seconds will cancel the previous keystroke.

STMG 700 - 35 -8/98

5

7 81

2

3

4

9 106

The left side of the keypad allows the operator or service technician tocommunicate with the VIDS monitor while the right side of the keypadallows the operator to "arm" or "disarm" the Autopitch feature of themachine. Autopitch is a function of the Electronic Implement Controland allows the operator to change parameters of the automatic dozingcycle. This function will be covered later in the presentation.

The functions of the left keys are:

Key Pressed Indicator (1): flashes once when any key is pressed.OK (2): used to complete keypad entries and to acknowledgeevents.MENU (3): used to access the main menu. The menu iscomprised of the following choices:

1:PREFERENCE MENU1:ADJUST CONTRAST2:ADJUST BACKLIGHT3:SELECT UNITS4:SELECT LANGUAGE

2:EVENTS MENU1:SHOW ACK EVENTS2:SHOW LOGGED EVENTS

3:SYSTEM MENU1:SHOW MACHINE STATS2:TEST DISPLAY

CANCEL (4): used to reject a prompt choice or setting value.HELP (5): not supported at this time.MORE (6): displays next line of text on message center.Backward Arrow Key (7)Forward Arrow Key (8)GAUGE (9): shows parameter name and number for first gauge inavailable list. Line two shows parameter value and unit ofmeasure. The Forward Arrow Key (8) allows the operator to scrollone gauge at a time through the list. If the GAUGE key is pressedtwice, the parameters will be shown by categories (Engine,Transmission, Electronic Implement, etc.).SETUP (10): enables the operator to select and save a grouping ofmachine settings to better meet an operator's method of operation.This mode will be discussed in detail later in the presentation.

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23

SETUP key (arrow)

Hot Keys

The Carrydozer keypad provides "Hot Keys" in addition to the standardVIDS keypad. These Hot Keys are used to access functions specific to theCarrydozer Electronic Implement Control.

The SETUP Hot Key (arrow) enables an operator to select and save agrouping of machine performance settings to better meet the method ofoperation.

When the SETUP Hot Key is pressed, the VIDS Message Center text areawill display the menu title and the first option. The menu title will remainon the first line, and the display can be cycled by using the arrow keys.An option may be selected by using the OK key when one of the fouroptions is being displayed or by using the associated numeric key.Pressing the CANCEL key at this point will return the display back to theDefault (or Background) Mode.

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?

VITAL INFORMATION DISPLAY SYSTEM (VIDS)OPERATOR KEYPAD

SETUP options

Most menus have more options than can be displayed at the same time.To help keep track of the menu, the first line of the message centerdisplays the menu titles. The second line will initially display the firstoption. The additional options may be viewed by using the arrow keys.

The options are:

OPERATOR SETUP MENU1:SELECT OPER ID2:SAVE SHIFT SETUP3:RECALL SETUP4:CLR ALL CHANGES

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24

Operator ID

Operator Setup Menu

This Setup Option allows the operator to choose a predefined numericidentifier, "OPER ID," for the group of settings. To the control system,the operator assumes the identity of the selected "OPER ID." The OPERID list contains 10 possible selections.

When the SELECT OPER ID menu item is selected, the VIDS MessageCenter text area will display the menu title and the first option. The menutitle will remain on the first line, and the additional options may be viewedby using the arrow keys. An option can be selected by using the OK keywhen that option is being displayed, or by pressing the associated numerickey. Pressing the CANCEL key at this point will return the display to theOperator Setup Menu.

OPERATOR SETUP MENU1 : SELECT OPER ID2 : SAVE SHIFT SETUP3 : RECALL SETUP4 : CLR ALL CHANGES

The D11R CD electronic system has several features that can becustomized to better match an operating condition or an operator's style.These features all have "default" settings that work over a broad range ofapplications. The default settings are called "Factory Settings."Temporary changes to the operator settings are called "Shift Settings." Ifdesired, the "Shift Settings" may be permanently stored as an OperatorID.

The options are:

-SELECT OPERATOR ID-1:FACTORY2:OPERATOR_ID_23:OPERATOR_ID_34:OPERATOR_ID_45:OPERATOR_ID_56:OPERATOR_ID_67:OPERATOR_ID_78:OPERATOR_ID_89:OPERATOR_ID_9

After the selection of OPER ID, the VIDS Message Center text displaywill respond with a confirmation. The confirmation will remain on thedisplay only long enough to be read, then the display will return to theOperator Setup Menu. For example, after a selection of 2:OPER_ID_2,the display will read:

OPERATOR ID SET TOOPER_ID_2

The first OPER ID selection is FACTORY, which has predefined settingsthat have been determined best for most methods of operation. If noselection is made from this menu, the FACTORY settings will be thedefault. Setting changes made during operation cannot be stored if theFACTORY ID settings have been selected.

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STMG 700 - 41 -8/98

25

Save setup defaults Option 2 under the Operator Setup Menu is 2:SAVE SHIFT SETUP. Thisoption is used to store the changes made to the settings associated with anOPER ID. These changes are permanently saved until another SAVEoperation is performed. It is important to note that an OPER ID other thanFACTORY must first be selected before a SAVE operation can beperformed. No provision is made to change the FACTORY defaults.

If no OPER ID is selected and the operator tries to save the settings, thedisplay will read:

OPERATOR ID MUST BEPICKED BEFORE SETUP


If FACTORY is selected and the operator tries to save the settings, thedisplay will read:

CANNOT SAVE SETUPFOR FACTORY ID

After selecting 2:SAVE SHIFT SETUP, the VIDS Message Center willdisplay a YES/NO prompt to ensure that the operator wants to proceed.The prompt display will read:

SELECT SAVE SETUPYES #NO

The selection marker "#" is used to indicate which option is selected. Itsdefault location is NO. If the operator wants to proceed, an arrow keymust be used to move the selection marker next to YES, and the OK keymust be pressed. A confirmation will then be displayed on the VIDSMessage Center text display.

If the OK key is pressed with the marker next to NO, the display willshow the following confirmation and then return to the Operator SetupMenu.

NEW SAVE SETUPNO

If the OK key is pressed with the marker next to YES, the display willshow the following confirmation and then return to the Operator SetupMenu.

NEW SAVE SETUPYES

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26

Recall setuppreferences

Option 3:RECALL SETUP will allow the use of settings stored for anyOPER ID, while maintaining the previously selected ID number. If, forexample, one operator wanted to configure the machine in the same wayanother operator has stored the settings, that operator could RECALL theother operator's settings. It is important to note that any OPER ID (exceptFACTORY) must first be selected before a SAVE operation can beperformed.

If no OPER ID is selected and the operator tries to RECALL settings, thedisplay will read:

OPERATOR ID MUST BEPICKED BEFORE SETUP


If an OPER ID has been previously selected and the operator selectsRECALL SETUP, the display will read the same as when the SELECTOPER ID option was first presented. At this point, the operator can thenchoose between the 10 possible OPER ID settings to RECALL. Note thatthe identifier of the OPER ID does not change, but all the associatedsetting values do change. If a RECALL of OPER_ID_2 operation issuccessful, the text area will display:

SETUP RECALLED TOOPER_ID_2

NOTE: The RECALL function only affects the Shift Setting. To saveor copy the settings, select Option 2:SAVE SHIFT SETUP

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STMG 700 - 45 -8/98

27

Clear setup changes The Operator Setup Menu Option 4:CLR ALL CHANGES is used to clearall the shift or temporary changes made to the settings associated with anOPER ID. The primary use of this function is to allow an operator whohas made many changes the ability to reset to default all the settings. Byclearing the changes, the shift or temporary settings for the currentOPERATOR ID will be replaced with the FACTORY settings. Theclearing will not affect the current OPERATOR ID identifier and will notstore the changes unless the Option 2:SAVE SHIFT SETUP operation isperformed. It is important to note that an OPER ID must first be selectedbefore a SAVE operation can be performed.

If no OPER ID is selected and the operator tries to SAVE settings, thedisplay will read:

OPERATOR ID MUST BE PICKED BEFORE SETUP


After a selection of Option 4:CLR ALL CHANGES, the VIDS MessageCenter will display a YES/NO prompt to ensure that the operator wants toproceed. The prompt display will read:

SELECT FACTORY SETUPYES #NO

The selection marker "#" is used to indicate which option is selected. Itsdefault is NO. If the operator wants to proceed, an arrow key must beused to move the selection marker to YES, and the OK key must bepressed. A confirmation will then be displayed on the VIDS MessageCenter text display.

If the OK key is pressed with the marker next to NO, the display willshow the following confirmation and then return to the OPERATORSETUP MENU:

NEW FACTORY SETUPNO

If the OK key is pressed with the marker next to YES, the display willshow the following confirmation and then return to the Operator SetupMenu:

NEW FACTORY SETUPYES

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28

Autopitch key (arrow)

Operation Parameters

The Autopitch function (arrow) on the D11R CD provides the operatorwith three blade pitch positions: the LOAD position, CARRY position,and DUMP or SPREAD position. The Autopitch feature automaticallybrings the blade to these positions at the beginning of these dozingsegments. These positions can either be the Factory Default presetpositions or custom positions preset by individual operators through thekeypad using the procedures described in the Service Manual for theImplement Electronic Control System (Form SENR9457). The keypad isalso used to activate the Autopitch Mode. When this mode is activated,the operator uses the message center on the Vital Information DisplaySystem (VIDS) and the left and right buttons on the dozer control lever toselect the appropriate mode of operation. The left button is referred to asthe "mode select button" and the right button is referred to as the "manualmode select button" (see Slide No. 4).

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?


Pressing the manual mode select button, regardless of the currentAutopitch segment, will change Autopitch to the "REDY TO CARY"segment.

The following text will be displayed:

BLD PITCH NOT RESETRESET W/MODE SELECT

When in the Resetting Mode, the implement control will automaticallymove the blade pitch. The operator will then, with the engine running,press the mode select (left) button on the dozer control lever to enter theReset function. The default or background on the text display will read:

RESETTING 577.7ENG SPD 700

If the operator does not use the mode select button to reset the BladePitch, but acknowledges the event and continues with Autopitch "armed,"the default on the text display will read:

NOT RESET 577.7ENG SPD 700

When the Blade Pitch Reset function has been completed, the text displaywill read:

REDY TO CARY 577.7ENG SPD 700

Autopitch may be "disarmed" by a subsequent selection of the AUTPITCH Hot Key. If Autopitch is "armed" and the AUT PITCH Hot Key ispressed, the Autopitch LED will be turned off and the text display willread:

AUTO PITCH CONTROLIS NOW OFF

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29

Change BLADE PITCH

SET PITCH key(arrow)

The SET PITCH Hot Key (arrow) enables an operator to change theBLADE PITCH settings which are associated with an OPERATOR ID.These settings can be changed for any of the LOAD, CARRY, or DUMPsegments of the dozing cycle. When an OPERATOR ID is selectedthrough the SETUP Hot Key, the values for these pitch settings are madecurrent. An operator may use the SET PITCH Hot Key to change thesevalues for a shift of operation. If the changed values are to be stored forfuture use, the SETUP Hot Key Option 2:SAVE SHIFT SETUP functionmust be performed.

It is important to note that the blade must be reset to allow changing thepitch settings. To reset the blade, the operator must arm the AUT PITCHbutton and then press the mode select button (the left button on the dozercontrol lever). Also, the engine must be running and the implementlockout switch set to the OFF position. When the blade is reset, it willremain reset until the machine or Autopitch is turned off. If the bladepitch is not reset, the value for LOAD, CARRY, and DUMP will remain at"0."

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?


BLADE PITCH options

When the SET PITCH Hot Key is pressed, the VIDS Message Center textarea will display the menu title and the first option. The menu title willremain on the first line, and the display can be cycled by using the arrowkeys. An option can be selected by using the OK key when that option isbeing displayed or by pressing the associated numeric key. Pressing theCANCEL key at this point will return the display back to the Default (orBackground) Mode.

The options are:

SET BLADE PITCH MENU1:SET LOAD PITCH2:SET CARRY PITCH3:SET DUMP PITCH

If Option 1:SET LOAD PITCH is selected, the display will read:

SET BLADE LOAD PITCH0%

The percentage value may be different, depending on the current positionof the blade pitch. The range of blade pitch is from FULL RACK BACK(0%) to FULL DUMP (100%).

At this point, the operator can use the dozer control lever rack back triggerlever or the dump rocker thumb lever to change the actual blade pitchposition. The displayed percentage value will change according to thechange in blade pitch. When the desired LOAD segment blade pitchposition is reached, the operator can accept the value with the OK key.The display will then read:

SET BLADE LOAD PITCH TO 0%

The display will then return to the SET BLADE PITCH menu whereanother segment of the blade pitch value can be changed. If no otherblade pitch values are to be changed, the operator can press the CANCELkey to return to the Default (or Background) Mode.

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STMG 700 - 51 -8/98

30

BLADE RETURNheight

SET HT key (arrow)

The SET HT Hot Key (arrow) enables the operator to change the bladereturn height setting which is associated with an OPERATOR ID. Whenan OPERATOR ID is selected through the SETUP Hot Key, the value forblade return height setting is made current. This value is used after aDUMP segment in the Autopitch Mode to determine the blade heightduring the RETURN segment.

When the SET HT Hot Key is pressed, the VIDS Message Center textarea display will read

SET BLADE RET HT= 100%

The percentage value may be different, depending on the current positionof the blade pitch. The range of blade height is from FULLY RAISED(100%) to FULLY LOWERED (-100%), where the ground line equals0%.

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?


At this point, the operator can use the dozer control lever to raise or lowerthe blade to the desired height. The displayed percentage value willchange according to the change in blade height. When the desired heightis reached, the operator can accept the value by pressing the OK key. Thedisplay will then read:

SET BLADE RET HT TO 100%

After approximately five seconds, the display will return to the Default (orBackground) Mode. If the CANCEL key is pressed instead of the OKkey, no change will be made in the settings and the display will thenreturn to the Default (or Background) Mode.

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31

SET MACH key(arrow)

Dozer control leverresponse

The SET MACH Hot Key (arrow) enables the operator to change thespread of the blade and the response of the dozer control lever settingassociated with an OPERATOR ID. When an OPERATOR ID is selectedthrough the SETUP Hot Key, the values for spread rate and blade responsesettings are used. These values are used to set the spread rate to one offour possible settings and the dozer control lever modulation to one ofthree possible settings.

When the SET MACH Hot Key is pressed, the text area display will read:

- MACH CONFIG -1:SPREAD RATE

Pressing the right arrow key once will display the the blade responseoption and the display will then read:

- MACH CONFIG -2:BLD RESPONSE

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?


When the operator selects the 1:SPREAD RATE option by pressing theOK button, the display will read:

- SPREAD RATE [1-4]1:NONE

The operator may scroll through the four options for spread rate using theright arrow key. An option can be selected by using the OK key whenthat option appears on the second line of the message center or bypressing the associated numeric key.

The four options for -SPREAD RATE [1-4]- are:1:NONE2:SLOW3:STD4:FAST

To accept a selection, the OK key must be pressed when the desiredoption is displayed on the second line of the display area. A confirmationwill then be displayed on the message center text display. The displaywill show the following confirmation and then return to the OperatorSetup Menu:

SPREAD SET TOSTD

After approximately five seconds, the display will return to the Default (orBackground) Mode. If the CANCEL key is pressed instead of the OKkey, no change will be made in the setting and the display will return tothe Default (or Background) Mode.When the operator selects Option 2:BLD RESPONSE, the display willread:

- BLD RESPONSE [1-3] -1:FINE

The operator may scroll through the three options for BLD RESPONSEby using the right arrow key. An option can be selected by using the OKkey when that option appears on the second line of the message center orby pressing the associated numeric key.

The three options for - BLD RESPONSE - are:

1:FINE2:STD3:FAST

STMG 700 - 54 -8/98

To accept a selection, the OK key must be pressed when the desiredoption is displayed on the second line of the display area. A confirmationwill then be displayed on the message center text display. The displaywill show the following confirmation and then return to the OperatorSetup Menu:

BLD RESPONSE SET TOSTD

After approximately five seconds, the display will then return to theDefault (or Background) Mode. If the CANCEL key is pressed instead ofthe OK key, no change will be made in the setting and the display willreturn to the Default (or Background) Mode.

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32

FLOAT key (arrow) Two steps are required to activate the BLADE FLOAT function. The firststep is referred to as "arming" FLOAT, and the second step is referred toas "activating" FLOAT.

The FLOAT Hot Key (arrow) is used by the operator to "arm" or "disarm"the BLADE FLOAT feature. When BLADE FLOAT is used, the onlydownward force on the blade is the weight of the blade.

If BLADE FLOAT is "disarmed" and the FLOAT Hot Key is pressed, theBlade Float LED (located below the keypad) will turn on and the textdisplay will read:

BLADE FLOAT CONTROLIS NOW ON

OK

MENU

CANCEL

1 2 3

GAUGE

HELP

0

4 5 6

7 9

MOREAUT

PITCH FLOAT

SETPITCH

SETHT

SETMACHSETUP

X ?


After "arming" BLADE FLOAT, the operator must then use the dozercontrol lever to activate the feature. To activate BLADE FLOAT, thedozer control lever is moved to the FULL LOWER position and eitherheld in that position or allowed to return to the center position. Raisingthe blade with the dozer control lever will deactivate the FLOAT Mode.While the feature is "armed," it may be repeatedly activated ordeactivated.

To "disarm" the BLADE FLOAT feature, press the FLOAT Hot Keyagain. The FLOAT LED will turn OFF and the text display will read:

BLADE FLOAT CONTROLIS NOW OFF

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33

CONCLUSION

This presentation has discussed the major features of the implementsystems for the D11R CD Carrydozer. When used in conjunction with theservice manual for this tractor, the information in this package shouldhelp the serviceman correctly diagnose a problem in the implementsystems.

For service repairs, adjustments, and maintenance, refer to the Operationand Maintenance Manual, Service Manual, and other related servicepublications.

STMG 700 - 58 -8/98

1. Title slide2. Implement system component locations3. Hydraulic tank4. Implement controls5. Dozer control valve6. Dozer tilt spool (HOLD)7. Dozer tilt spool (TILT RIGHT)8. Dual tilt solenoid valve (HOLD)9. Dual tilt circuit (TILT RIGHT)

10. Dual tilt circuit (BLADE DUMP)11. Dozer lift spool (HOLD)12. Dozer control valve (HOLD)13. Dozer control valve (RAISE)14. Dozer lift spool (HOLD)15. Fan drive hydraulic system16. Fan pumps17. Ripper control valve18. Ripper and pilot systems (RAISE)19. Ripper and pilot systems (LOWER)20. Electro-hydraulic pilot system (HOLD)21. Implement lockout switch22. VIDS keypad23 VIDS keypad (operator setup menu)24. VIDS keypad (select oper id)25. VIDS keypad (save shift setup)26. VIDS keypad (recall setup)27. VIDS keypad (clr all changes)28. VIDS keypad (autopitch operation)29. VIDS keypad (set pitch)30. VIDS keypad (set ht)31. VIDS keypad(set mach)32. VIDS keypad (float)33. D11R CD Carrydozer

SLIDE LIST

STMG 700 - 59 -8/98

ELEC

TRO

-HYD

RAUL

IC B

LADE

CO

NTRO

LLI

FT

BLA

DE

LIFT

AN

D P

ITCH 1

1 1

1 1

10

00

0 0

01

11

11

11

00

00

10

11

01

00

01

00

01

11

00

00

00

00

0

E1 Im

plem

ent s

huto

ffE2

Low

er/F

loat

E3 R

aise

E4 L

eft T

ilt/R

ack

E5 R

ight

Tilt

/Dum

pE6

Qui

ck-D

ump

E7 P

itch

E8 S

ingl

e Ti

lt

RA

CKD

UMP

QUIC

K DU

MP

LIFT

TILT

R

TILT

L

"1"

- So

leno

id is

act

ivat

ed"0"

- So

leno

id is

not

act

ivat

ed

SOLE

NOID

S:

BLA

DE

LIFT

BLA

DE

LIFT

/TIL

T

STMG 700 - 60 - Serviceman's Handout No. 18/98

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SESV1700 Printed in U.S.A.8/98

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