330D - Technical NPI

SERV7106-02Vol. 2, No. 2February 2006

TECHNICAL PRESENTATION

330D HYDRAULIC EXCAVATORINTRODUCTION

New Product Introduction(NPI)

GLOBAL SERVICE LEARNING

330D HYDRAULIC EXCAVATORINTRODUCTION

AUDIENCEService personnel who understand the principles of machine systems operation, diagnosticequipment, and testing and adjusting procedures.

CONTENTThis presentation provides new and different New Product Introduction (NPI) information onthe 330D Hydraulic Excavator. This presentation may be used for self-paced and self-directedtraining. The 330D will be available in worldwide markets early in 2006.

OBJECTIVESAfter learning the information in this presentation, the technician will be able to:

1. locate and identify the new major components on the 330D Hydraulic Excavator, and

2. explain the operation of the new components in the system.

REFERENCES330D Hydraulic Excavator Specalog AEHQ5667330D Hydraulic Excavator Specifications Manual RENR9583330D Hydraulic Excavator Hydraulic System - Systems Operations Manual RENR9584330D Hydraulic Excavator Test and Adjust Manual RENR9585330D Hydraulic Excavator Parts Book SEBP4139330D Hydraulic Excavator Tool Control Systems Operation / Troubleshooting /

Testing and Adjusting RENR7389Machine Monitoring System - Systems Operation RENR8068

Estimated Time: 1 HourVisuals: 40Handouts: 4Form: SERV7106-02Date: Vol. 2, No. 2, 2006

© 2006 Caterpillar Inc.

TABLE OF CONTENTS

INTRODUCTION ..................................................................................................................5Similarities and Differences .............................................................................................6

MACHINE WALK-AROUND...............................................................................................7

OPERATOR'S STATION......................................................................................................13

ENGINE................................................................................................................................24

HYDRAULIC SYSTEM ......................................................................................................27

MAINTENANCE ITEMS ....................................................................................................42

TOOL CONTROL SYSTEM ...............................................................................................43

CONCLUSION.....................................................................................................................46

HYDRAULIC SCHEMATIC COLOR CODE.....................................................................47

HANDOUTS.........................................................................................................................48

POSTTEST ...........................................................................................................................49

POSTTEST ANSWER KEY ................................................................................................51

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NOTES

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INTRODUCTION

The 330D is a new model from Caterpillar and is a direct replacement for the 330C HydraulicExcavator. The 330D was introduced in February 2006. The 330D operating weight is approximately 36 151 Kg (79,700 lbs) for a long undercarriage machine equipped with ReachBoom, R3.9DB Stick, 1.19 m3 (1.56 yd3) GP bucket, and 800 mm (32 in.) shoes. The 330D fitsin the 30 metric ton class of excavators and is a versatile machine capable of performing a widerange of tasks by using the various work tools available.

The presentation discusses the component locations and systems operation of the 330DHydraulic Excavator. Basic engine and machine component locations will be discussed. Thetravel system and implement hydraulics will also be covered.

There are different machine arrangements available, including:

- 330D L (330D excavator with a long, fixed standard width undercarriage)

- 330D LN (330D excavator with a long, fixed narrow width undercarriage)

The customer can choose between two booms, six sticks, and several bucket sizes, based on thearrangement chosen.

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330D HYDRAULIC EXCAVATORSINTRODUCTION

© 2006 Caterpillar Inc.

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Similarities and Differences

The above chart displays the similarities and differences between the 330D and the 330C. Newand improved features include:

- Cab and styling

- C9 ACERT™ technology engine

- Main hydraulic pumps

- Monitoring system

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MACHINE WALKAROUND

- Stick (1)

- Boom (2)

- Operator station (3)

- Engine access cover (4)

- Access door to air cleaner and battery compartment (5)

- Access door to radiator compartment (6)

- Counterweight (7)

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The air cleaner and battery compartment includes the following components:

- Machine and Tool Control ECM (1)

- Air conditioning condenser and receiver (2)

- Window washer reservoir (3)

- Master disconnect switch and circuit breakers (4)

- Dual element, radial seal air filter (5)

- Ether start aid solenoid (6)

- Batteries (7)

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The radiator access compartment is located in front of the counterweight. The door is hingedon the right and has a locking latch on the left side to keep it closed. This door provides accessfor cleaning some of the cooling system components and servicing some of the fuel system andcooling system components.

- Hydraulic oil cooler (1)

- Fuel pressure sensors (2)

- Fuel priming pump (3) (will be changed to electric)

- Fuel filter (4)

- Pattern change valve (5)

- Air to Air After Cooler (ATAAC) (6)

- Fuel water separator base (7)

- Radiator (8)

- Engine coolant overflow bottle (9)

- Fuel water separator (10)

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This illustration shows access to the top of the machine from the right side.

The engine access cover (1) allows access to the engine from the top of the machine.

The hydraulic tank (2) is located between the pump compartment and the diesel fuel tank on theright side of the machine and is accessed from the top of the machine.

The diesel fuel filler cap (3) is accessed from the top of the machine.

A boom lowering check valve (4) is mounted on each boom cylinder.

The storage compartment (5) is located in the front of the machine.

The step and hand rail (6) at the right front of the machine can be used for access to the top ofthe machine.

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The illustration shows the pump compartment on the right side of the machine.

Some of the visible components are:

- Quick coupler solenoid valve (1)

- Engine oil S•O•S port (2)

- Engine oil filter (3)

- Fan pump (4)

- Medium pressure circuit pump (5)

- Medium pressure solenoids (6)

- Pressure taps for auxiliary tool solenoids (7)

- Pilot pump (8)

- Pilot filter (9)

- Pilot system S•O•S port (10)

- Case drain filter (11)

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Additional visible components are:

- Power shift solenoid and proportional reducing valve (PSPRV) (12)

- Cooling fan pump regulator (13)

- Cooling fan pump regulator flow adjustment (14)

- Right pump (15)

- Left pump (16)

- Left pump swashplate minimum angle adjustment (17)

- Power shift pressure port (18)

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OPERATOR'S STATION

The 330D contains a newly designed cab and introduces a new operator's station with improvedvisibility and operator comfort. For operator comfort the new cab provides wider visibility.Inside the cab is an available fully adjustable air suspended seat with side-to-side shock absorption, which provides maximum operator comfort. The new "D" series monitor providesincreased functionality for the operator. Conveniently placed switches, gauges, information display, and controls improve operator comfort, awareness, and efficiency. The fuse panel isrelocated to the left side of the lunch box compartment behind the operator’s seat for easyaccess. A 24 volt AM FM radio is standard in the right console.

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The hydraulic activation lever (1) has been redesigned for the 330D, however, its purpose isstill the same. With the lever in the DOWN position (shown), the hydraulic activation solenoidis in the de-activated position. No hydraulic functions are available with the lever in the downposition.

The ground level emergency engine shutoff switch (2) is now located on the bottom of the seatmount. The shutoff switch will shut off the engine without having to climb into the cab. Oncethe shutoff switch is turned ON and then OFF, the key start switch must be cycled for themachine to operate again.

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The 330D monitor has been updated. The 330D shares this new monitor with the 320D, 323D,324D, 325D, 345C, 365C, and the 385C machines.

The monitor is a full color Liquid Crystal Display (LCD) that displays the various parametersof the machine. The monitor components are:

- Alert Indicator (1)

- Clock (2)

- Fuel Gauge (3)

- Hydraulic Oil Temperature Gauge (4)

- Engine Speed Dial Indicator (5)

- Engine Coolant Temperature Gauge (6)

- Operating Hours (7)

- Work Tool Indicator (8)

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The monitor contains eight buttons that control navigation on the monitor screen. The fourdirectional button are left (1), up (2), down (3), and right (4). The directional buttons navigatethe cursor through the various screens.

The four navigational buttons are home (5), menu (6), back (7), and OK (8). The button functions are different on the 330D Monitor than what they are on the 330C Monitor.

For additional information on the operation of the monitor, refer to:

- RENR8068, Machine Monitoring System - Systems Operation

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All of the operator functions are incorporated into the redesigned right side of the operator's station. They are:

- Engine speed dial switch (1)

- Key start switch (2)

- Cigar lighter (3)

- Soft switch panel (4)

- Rocker switches (5)

- HVAC controls (6)

- Radio (7)

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The soft switch panel includes switches that either turn a function on/off or allow the operatorto toggle through different modes of the selected function. The soft switches provide the operator with the following functions:

Two-speed travel (1)

When the button is pushed the travel speed is toggled between low and auto.

- The rabbit indicator indicates auto speed.

- The tortoise indicator indicates low speed.

Automatic Engine Speed Control (AESC) Switch (2)

The AESC function automatically reduces engine speed while there is no hydraulic demand,which reduces noise and fuel consumption.

- The AESC switch disables and enables the AESC function.

- The first stage AESC reduces the engine speed by 100 rpm after there has been nohydraulic demand for approximately three seconds.

- The second stage AESC reduces the engine rpm to approximately 1300 rpm after therehas been no hydraulic demand for an additional three seconds.

- The second stage AESC delay times and rpm can be changed using the monitor orCaterpillar Electronic Technician (Cat ET).

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Travel alarm cancel (3)

The travel alarm cancel switch is a momentary two-position switch.

- The travel alarm sounds when travel is detected.

- The travel alarm stops immediately if the travel alarm cancel switch is depressed.

- The travel alarm switch is reset every time the travel pressure switch opens.

Work tool switch (4)

The work tool switch will display the selected work tool on the monitor display. Press theswitch repeatedly to change the selected work tool. When the desired work tool is highlightedin the monitor display, press the "OK" button on the monitor to select the work tool shown.

Work lights (5)

The work lights switch toggles between the different work light combinations.

- Pattern 1 - Chassis work lights and cab work lights.

- Pattern 2 - Chassis work lights, cab work lights, and boom work lights.

Upper window wipers (6)

The wiper switch toggles between the different modes of the wipers.

- Six second delay.

- Three second delay.

- Continuous operation.

- Off.

Upper window washer (7)

The windshield washer fluid switch is an ON/OFF switch.

Heavy lift (8)

The heavy lift mode can be selected to boost lifting capability and provide improved controllability of heavy loads.

- When heavy lift is turned on, the main relief valve maximum pressure increases from approximately 35,000 kPa (5076 psi) to 36,000 kPa (5221 psi), making it possible tooperate at the high pressure.

- In heavy lift mode, the maximum engine speed is limited to engine speed dial 6 (1510 ± 90 rpm).

- Hydraulic horsepower maximum output is reduced to 60%.

The toggle and rocker switch panel contains switches that control additional functions:

Quick coupler lock control (1)

The quick coupler lock control switch is a spring centered toggle switch.

- The top position locks the quick coupler.

- The bottom position unlocks the quick coupler.

Fine swing control (2)

The fine swing control switch is a two-position rocker switch.

- The top position activates fine swing control. Fine swing control improves the swingcontrol during swing deceleration.

- The bottom position deactivates fine swing control.

Rear window washer (3)

The rear window washer fluid switch is a two-position rocker switch.

- The top position activates the windshield washer fluid.

- The bottom position deactivates the windshield washer fluid.

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Rear window wiper (4)

The rear window wiper switch is a two-position rocker switch.

- The top position activates the wiper.

- The bottom position deactivates the wiper.

The back-up switches are located behind the right armrest. The right switch (1) controls theengine rpm while the Back-up Mode is active. Holding the right switch in the DOWN positiondecreases the engine rpm. Holding the right switch in the UP position increases the enginerpm.

The left switch (2) activates/deactivates the Back-up Mode. When Back-up Mode is active, afixed power shift pressure is provided to the pumps. The fixed power shift pressure limits maximum pump output and allows the machine to continue operating in a Derate Mode.Machine productivity will be limited while the machine is in Back-up Mode.

The diagnostic connector (3) is located inside of the operator's station behind the right armrest,beside the back-up switches.

The HVAC control ECM (4) is also located below the right console.

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The fuse panel for the 330D has been relocated to the left side of the lunch box panel behindthe operator's seat.

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ENGINE

The 330D is equipped with a C9 ACERT™ Engine (1). It is rated at 200 kW (268 hp) at 1800 rpm. ACERT™ Technology offers better fuel economy and reduced wear.

Also visible in the photo are:

- engine oil dipstick (2)

- inlet air heater (3).

- engine oil fill (4)

- S•O•S coolant sampling valve (5)

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The 330D engine fan is now hydraulically driven by a fixed displacement motor (arrow) that issupplied oil from the fan pump. Fan speed is varied to provide optimized cooling. The optimum fan speed is calculated using engine coolant temperature and hydraulic oil temperature.

Case drain oil from the fan motor is combined with the case drain oil from the swing and travelmotors. Return oil from the fan motor is sent to the return filters and into the hydraulic tank.An internal makeup valve in the fan motor is used to prevent cavitation when flow from the fanpump stops.

The direction of the engine fan can be reversed on machines equipped with the reversible fanoption. The fan motor rotation can be changed with the monitor. The reversal of the fan motoris used to clear debris and dust from the radiator and hydraulic oil cooler.

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The fan pump and engine oil filter are located in the hydraulic pump compartment at the rightrear of the machine. Shown in this photo are:

- engine oil S•O•S port (1)

- engine oil filter (2)

- fan pump driven off the right pump (3)

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HYDRAULIC SYSTEM

The 330D uses a negative flow control (NFC) hydraulic system. The main control valve is similar to the 330C main control valve. The main hydraulic pumps are different from the 330C.The engine fan is now hydraulically driven. The engine fan is mounted on a fixed displacementmotor. The variable displacement fan pump, located in the pump compartment, sends hydraulicoil to turn the fan motor. The 330D continues using many of the "C" excavator features, suchas automatic priorities and tool control systems.

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Stick Cylinder

Bucket Cylinder Boom Cylinders

Swing Motor Travel Motors

PilotControlValves

PriorityValves

MainHydraulic

PumpsMPilot

Pump

FanMotor

Pilot Manifold

Main Control Valve Group

MAIN HYDRAULIC SYSTEM

FanPump

Tank

The pilot pump (arrow) is driven off the left hydraulic pump. The pilot pump draws oil fromthe main pump suction line. The oil is sent to the pilot filter and then to the pilot system.

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Pilot system components shown in this photo are:

- pilot oil filter (1)

- hydraulic oil S•O•S test port (2)

- pilot oil pressure test port (3)

- pilot system pressure relief valve (4)

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The 330D pilot manifold is the same as the "C" pilot manifold. The pilot manifold is accessibleby removing the cover plate under the machine, behind the swing bearing. The manifold islocated directly below the main control valve. Pilot manifold components visible are:

- Two-speed travel solenoid (1)

- Swing brake solenoid (2)

- Hydraulic activation valve (3)

- Hydraulic activation solenoid (4)

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The 330D uses automatic priorities for certain functions based on the position of the joysticks.

The boom priority (1) and the swing priority (2) pressure reducing valves are located behind theswing bearing on the left side of the machine.

The boom priority PRV provides boom up priority over the stick in function. The swingpriority PRV provides swing priority over the stick in or stick out function.

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The 330D has a pilot operated, two stage main relief valve (arrow) located on the top center ofthe main control valve. The relief valve settings are 35000 ± 490 kPa (5076 ± 71 psi) forimplement/travel and 36000 ± 490 kPa (5220 ± 71 psi) for heavy lift mode. The high pressure setting for heavy lift must be correctly adjusted before adjustments can be made for implement/travel settings. Refer to the Testing and Adjusting manual RENR9585 (Aurora andAkashi build) or RENR9678 (Gossilies build) for the proper procedure on setting the mainrelief valve.

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Two travel pressure switches for left and right travel (not shown) and the swing/implement pressure switch (arrow), are located under the cab. The pressure switches are activated by pilotoil from the control valves in the cab. The switches close at 490 ± 49 kPa (71 ± 7 psi) andopen at 290 ± 0 kPa (42 ± 0 psi).

The pressure switches are inputs to the Machine and Tool Control ECM. The Machine andTool Control ECM uses these inputs to tell when a hydraulic function has been activated andwill turn the Automatic Engine Speed Control (AESC)/one touch low idle back to the currentspeed dial setting. When only the swing/implement pressure switch is activated, the Machineand Tool Control ECM will release the swing brake. When all three pressure switches are activated, the Machine and Tool Control ECM will energize the straight travel solenoid.

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The main hydraulic system is a negative flow controlled system. The main hydraulic systemsupplies hydraulic power at high pressures and high flow rates to perform work. Two mainhydraulic pumps supply oil to the main control valve group. The individual hydraulic circuitsare controlled by valves in the the main control valve group.

The main hydraulic system supplies the following circuits:

- Swing

- Stick

- Travel

- Boom

- Bucket

- Tool control

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The 330D uses a new Kawasaki designed main hydraulic pump group (3) rated at 2 x 280 L/Min (2 x 74 gpm). The pump group is different from the pump group used on the330C, however it continues using an NFC control system. This pump group is similar to thepump group used on the 345C.

The right pump (4) is driven by the engine via a flexible coupling. The left pump (5) is drivendirectly off the right pump. Each pump rotating group has its own regulator. The regulators areused to adjust the output flow of the pumps. Each pump rotating group also has its own pressure tap and pressure sensor.

A power shift PRV (2) is mounted on the top, center of the pump group case. The power shiftPRV uses pilot system oil and sends it to the main hydraulic pump regulators as a control signalpressure. The power shift pressure is measured at pressure tap (7).

Additional pump components shown in this photo are:

- Right pump regulator (1)

- Left pump swashplate minimum angle adjustment (6)

- Left pump regulator (8)

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This is a view of the right pump regulator. The pump regulator is located above and behind thepower shift solenoid and proportional reducing valve. This view shows:

- Right pump negative flow control adjustment (1)

- Right pump horsepower control adjustment (2)

The left pump regulator has the same adjustment screws.

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The 330D contains one case drain filter (1) for the pump case drain and the swing and travelsystem case drains and the fan motor case drain. The case drain filter is located in the mainpump compartment.

The return hydraulic system oil filter (2) is also located in the pump compartment. Thehydraulic oil level sight gauge (3) is located on the rear of the hydraulic tank and is visible inthe pump compartment.

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The main control valve group is located in the center of the upper structure of the machine.The main control valve group receives pilot oil signals from the operator controls in the cab.Each pilot signal then causes the appropriate control valve to shift in the correct direction.When a control valve shifts, oil flows from the main hydraulic pumps to the appropriatehydraulic cylinder or hydraulic motor to perform work. The 330D main control valve is similarto the 330C valve. The valves are:

- Right side NFC signal line (1)

- Stick 2 (2)

- Boom 1 (3)

- Bucket (4)

- Attachment (5)

- Right travel (6)

- Right side NFC relief valve drain line (7)

- Right side NFC relief valve (8)

- Boom rod end line relief valve (9)

- Bucket head end line relief valve (10)

- Straight travel solenoid valve wiring harness (11)

- Straight travel valve (12)

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Additional valves in the main control valve are:

- Left travel (13)

- Swing (14)

- Stick regeneration signal line (15)

- Stick 1 (16)

- Boom 2 (17)

- Auxiliary valve for tool control (18)

- Main relief valve (19)

- Stick head end line relief valve (20)

- Auxiliary valve line relief valve (21)

- Left side NFC signal line (22)

- Left side NFC relief valve (23)

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The 330D is available with the Heavy Lift option. Heavy Lift provides a means to haveincreased hydraulic pressure available to help complete heavy lifts, such as larger sewer pipe.

Heavy Lift is activated by pressing the heavy lift switch (1) on the soft switch panel in the operators station. The heavy lift switch is an input to the Machine and Tool Control ECM. TheMachine and Tool Control ECM limits engine speed to speed dial 6 and activates the heavy liftsolenoid (2), which directs pilot oil to the main relief valve (3) increasing the system pressure.At the same time, the Machine and Tool Control ECM increases the power shift pressure todecrease the pump output flow. Decreasing the pump output flow provides increased controllability and smooth hydraulic control during a heavy lift operation. Heavy Lift mode limits the pumps to a maximum of approximately 60% of the normal hydraulic horsepower.

Heavy Lift Specs:

- Engine rpm for Heavy Lift is the engine speed dial 6 setting.

- Hydraulic horsepower is limited to 60% of full power during Heavy Lift.

- Main relief maximum pressure during Heavy Lift is 36000 kPa ± 490 kPa(5220 ± 71 psi).

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The 330D has one swing motor (1) that receives oil from the swing control valve. The swingcontrol valve receives pump oil from the left pump. Additional swing motor componentsshown in this photo are:

- Swing brake release pressure line (2)

- Swing drive oil level dipstick (3)

- Fine swing solenoid harness (4)

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MAINTENANCE ITEMS

Cat ET or the monitoring system can be used for testing and calibrating the machine. Extendedfluid change intervals are available with the proper S•O•S procedures. Maintenance intervalsfor several components and systems on the machine are programmed into the monitor.

The operator can access component maintenance intervals to see the hours remaining beforemaintenance is due. Some of the maintenance items are:

- Hydraulic oil and hydraulic oil filter changes

- Swing drive oil change

- Travel drive oil change

- Engine oil and engine oil filter changes

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TOOL CONTROL SYSTEM

The tool control system for the 330D is similar in function to the tool control systems for the320C - 330C medium excavators, although the medium pressure circuit is now a stand-alonefunction.

The optional tool control system maximizes work tool productivity by configuring hydraulicflow, pressure, and operator controls to match a specific work tool. System versatility enables awide range of tools to be used.

The 330Ds produced in Akashi and Aurora can be equipped with the following factory installedtool control systems:

- System 3 (Hammer) - provides two pump flow in a single direction only. This systemalso includes a mechanical line relief valve (LRV) for lower psi tools (single action).

- System 5/System 15 (Thumb) - provides one pump flow in both directions(extend/retract double action) and can be controlled with a foot pedal (system 5) or withjoystick buttons (system 15).

- System 14 (Multifunction) - provides one or two pump flow in one or two directions(single action or double action). System 14 has full electronic controls and features anindependent medium pressure circuit used for such applications as a rotating shear orditch cleaning bucket.

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The 330D's produced in Gosselies will have the following factory installed optional tool controlsystems:

- System 16 - provides two pump flow in a single direction, has a direct return system tothe hydraulic tank, and includes a mechanical (LRV) for lower psi tools (single action).

- System 17 (Multifunction) - provides one or two pump flow in one or two directions(single action or double action) and has a direct return system to the hydraulic tank.System 17 has full electronic controls and features an independent medium pressure circuit used for applications such as a rotating shear or ditch cleaning bucket.

The medium pressure solenoids (1) for the medium pressure circuit are located in the pumpcompartment. Tool control pressure test ports (2) are also located in the pump compartment.

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CONCLUSION

This presentation has provided New Product Introduction (NPI) information for the Caterpillar330D Hydraulic Excavator. The new components and their locations were identified and discussed.

Refer to the latest service literature for more information and specifications.

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HYDRAULIC SCHEMATIC COLOR CODES

The colors on the hydraulic schematics and cross-sectional views shown throughout this presentation denote specific meanings. This illustration identifies the meaning of each color.

SERV7106-02 - 47 - NPIVol. 2, No. 2, 2006

Red - High Pressure Oil

Red / White Stripes - 1st Pressure Reduction

Pink - 3rd Reduction in Pressure

Red / Pink Stripes - Secondary Source Oil Pressure

Orange - Pilot, Charge or Torque Converter Oil

Blue - Trapped Oil

Brown - Lubricating Oil

Cat Yellow - (Restricted Usage)

Green / White Stripes -Scavenge / Suction Oil or Hydraulic Void

Identification of Componentswithin a Moving Group

Black - Mechanical Connection. Seal

Dark Gray - Cutaway Section

Light Gray - Surface Color

White - Atmosphere or Air (No Pressure)

Purple - Pneumatic Pressure

Yellow - Moving or Activated Components

Orange / Crosshatch - 2nd Reduction in Pilot,Charge, or TC Oil Pressure

Orange / White Stripes - Reduced Pilot, Charge, orTC Oil Pressure

Red Crosshatch - 2nd Reduction in Pressure

Green - Tank, Sump, or Return Oil

HYDRAULIC SCHEMATIC COLOR CODE

SERV7106-02 - 48 - NPIVol. 2, No. 2, 2006 Handout No. 1

Red

- H

igh

Pres

sure

Oil

Red

/ W

hite

Str

ipes

- 1

st P

ress

ure

Red

uctio

n

Pink

- 3r

d R

educ

tion

in P

ress

ure

Red

/ Pi

nk S

trip

es -

Seco

ndar

y So

urce

Oil

Pres

sure

Ora

nge

- Pilo

t, C

harg

e or

Tor

que

Con

vert

er O

il

Blu

e - T

rapp

ed O

il

Bro

wn

- Lub

ricat

ing

Oil

Cat

Yel

low

- (R

estr

icte

d U

sage

)

Gre

en /

Whi

te S

trip

es -

Scav

enge

/ Su

ctio

n O

il or

Hyd

raul

ic V

oid

Iden

tific

atio

n of

Com

pone

nts

with

in a

Mov

ing

Gro

up

Bla

ck -

Mec

hani

cal C

onne

ctio

n. S

eal

Dar

k G

ray

- Cut

away

Sec

tion

Ligh

t Gra

y -

Surf

ace

Col

or

Whi

te -

Atm

osph

ere

or A

ir (N

o Pr

essu

re)

Purp

le -

Pneu

mat

ic P

ress

ure

Yello

w -

Mov

ing

or A

ctiv

ated

Com

pone

nts

Ora

nge

/ Cro

ssha

tch

- 2nd

Red

uctio

n in

Pilo

t,C

harg

e, o

r TC

Oil

Pres

sure

Ora

nge

/ Whi

te S

trip

es -

Red

uced

Pilo

t, C

harg

e, o

rTC

Oil

Pres

sure

Red

Cro

ssha

tch

- 2nd

Red

uctio

n in

Pre

ssur

e

Gre

en -

Tank

, Sum

p, o

r Ret

urn

Oil

HYD

RA

ULI

C S

CH

EMAT

IC C

OLO

R C

OD

E


Posttest

Directions: Circle the correct letter indicating the best answer for each question.

1. Which of the following features on the 330D is the same as it was on the 330C?

A. EngineB. Operator's stationC. Monitoring systemD. Hydraulic pumpsE. Travel system

2. Where are the tool control pressure test ports located?

A. On the Tool control plumbing above the swing motor. B. In the compartment beneath the cab. C. In the front of the pump compartment. D. In the rear of the pump compartment.

3. Which tool control system is not available on the Aurora and Akashi produced 330D's?

A. Medium pressure circuitB. System 3C. System 5D. System 14E. System 16

4. The service tool diagnostic connector is relocated on the 330D to:

A. radiator compartmentB. air cleaner/battery compartmentC. in the cab behind the operator's seatD. in the cab in the right console

5. What information is shown in the lower display window on the monitor?

A. Work tool currently selectedB. Engine rpmC. Engine speed dial numberD. Service meter hoursE. Hydraulic oil pressure

6. Which component is not located in the radiator compartment?

A. Hydraulic oil coolerB. Engine coolant recovery bottleC. Fuel pressure sensorsD. Fuel filterE. Machine and Tool Control ECM


Posttest (continued)7. Which function is not prioritized by the priority pressure reducing valves?

A. Boom upB. Stick inC. Boom downD. Stick out

8. The boom and swing priority pressure reducing valves are located:

A. Behind the swing bearing on the left sideB. Beneath the operator platform below the foot pedalsC. Beneath the operator platform below the seatD. In the rear of the pump compartmentE. Behind the swing bearing on the right side

9. The Auxiliary valve for the tool control is located on the right end of the main controlvalve.

A. TrueB. False

10. The main implement pumps on the 330D are rated at:

A. 2 X 270 L/min (71.4 gpm)B. 2 X 275 L/min (72.7 gpm)C. 2 X 280 L/min (74.0 gpm)D. 2 X 285 L/min (75.3 gpm)


Posttest Answer Key1. E2. C3. E4. D5. A6. E7. C8. A9. B

10. C

330D - Technical NPI

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