| Tapered Roller Bearings | Tapered roller bearing design provides excellent service life. |
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| Power Supply | The voltage converter provides two 12-volt power supplies. |
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| Undercarriage Arrangements | Standard Arrangement: 660 mm (26 in) single grouser shoes made from heat-treated, rolled steel for added strength. Long track frame and wide gauge enhance track contact area, providing a very stable working base.
Low Ground Pressure (LGP) arrangement (optional):
- 760 mm (30 in) single grouser slipped shoes.
- Specially designed to work in soft and spongy conditions.
- Wide track shoes increase track contact area and reduce ground pressure for excellent flotation.
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| Power Train | The 3176C engine, matched with the torque divider and field proven power shift transmission, provides years of dependable service. | 
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| Air Inlet Heater | Fully automatic electronic air inlet heater facilitates cold starting conditions.
- No service required.
- Replaces the ether starting aid.
- 30-second pre-heat cycle.
- Eliminates the need for conventional block heat systems down to -32°C (-26°F).
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| Cylinder Block | Engine durability begins with its foundation – the engine block. The serpentine design of the 3176C block provides maximum strength with reduced weight. A single-piece, deep-skirted design provides a solid base for the durability you require in today’s 572R Series 2. | 
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| Cat 3176C Engine | The Cat 3176C engine meets EPA Tier 2, EU Stage II, and Japan MOC Step 2 exhaust emission regulations. Major features include:
- Power of 179 kW (240 hp) for superior performance.
- Large displacement electronic engine with lower exhaust emissions and good cold start capability.
- Power train to engine link with controlled throttle shifting.
- Higher efficiency turbocharger for improved airflow.
- Fuel/Air Ratio Control to minimize acceleration smoke.
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| Cylinder Head | The 3176C cylinder head is designed for maximum breathing, which helps ensure excellent fuel efficiency. This one-piece, stress-relieved, gray-iron casting has four valves per cylinder. Robust intake and exhaust valves aid airflow and provide excellent reliability and fuel efficiency. | 
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| Valves | Stellite-faced valves, assures reliability and performance in the toughest applications. The engine uses two intake valves and two exhaust valves per cylinder. Hardened valve faces resist wear at extreme temperatures. Rotators turn the valves about three degrees each lift to distribute wear and maintain heat transfer. Hardened steel, chrome-plated valve stems provide excellent wear and heat resistance. Stellite-faced valves are designed to permit reuse at engine rebuild. |
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| Reduced Exhaust Smoke | Exhaust smoke is significantly reduced through precise, electronic control of fuel metering and injection timing. |
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| Improved Reliability | Improved reliability through simplification of mechanical linkages and by electronically protecting the engine during:
- Cold starts.
- Prolonged idling periods.
- High altitude operation.
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| Electronic Unit Injector (EUI) | The mechanically actuated, electronically controlled unit injector combines an electronic actuator, pump assembly and nozzle into a single, compact unit for reliability and durability. The 3176C fuel system has been tested in thousands of engines in some of the most demanding applications and environments around the world. | 
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| Pistons | The two-piece, articulated piston design consists of a forged-steel crown for maximum strength and a cast aluminum skirt to reduce weight. A large piston pin holds the crown, skirt, and connecting rod together. The aluminum skirt runs cooler than conventional pistons, allowing a closer fit to the cylinder liner and providing longer life. The steel crown handles the higher internal pressures of today’s engines. | 
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| Design | The fuel system design eliminates external high-pressure fuel lines, providing efficient, precise fuel delivery, and timing. |
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| Serviceability | Unit injectors can be serviced individually, without the need to service the entire fuel system. |
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| Crankshaft | The crankshaft is steel forging with induction-hardened journals and fillets. The wide center and end main journals and bearings are designed to maintain maximum oil film thickness for excellent lubrication and for cooling the bearings. The result is long life-to-overhaul. | 
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| Load Line Speed Range | Allows the operator to select high or low. |
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| Turbocharging and Aftercooling | When you couple a turbocharger with cooler inlet air from a superior aftercooling system it is no surprise that the 3176C engine will have cleaner emissions with better response, longer life, improved fuel economy and less heat rejection. |
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| Turbocharger | The 3176C turbocharger provides better bottom-end response, improved fuel economy, and less heat rejection. |
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| Large Air Filters | Larger air filters provide additional capacity and a longer service life in severe conditions for lower owning and operating cost. | 
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| Longer Component Life | The cylinder head utilizes additional coolant passages to provide maximum engine cooling. Cylinder liner inner surfaces are fully honed and induction hardened to maximize wear resistance. Oil-cooled pistons and full-length, water-cooled cylinder liners provide maximum heat transfer for longer component life. |
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| Advanced Modular Cooling System (AMOCS) | AMOCS utilizes an exclusive two pass cooling system and increased cooling surface area to provide significantly more cooling efficiency than conventional systems. | 
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| Two-Pass Cooling System | Using a two-pass system, the AMOCS radiator provides a more efficient heat exchange. Coolant is routed from a sectioned bottom tank up the front side, over the top of the core and down the engine side of the core to the bottom tank. This flow pattern allows the coolant to pass through the radiator twice for better cooling. |
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| Modular Design | The cooling elements are individual core modules connected to a sectioned bottom tank. There is no top tank to remove.
Design includes:
- Standard 9 steel fins per 2.54 cm (1 in), or an optional 6 steel fins per 2.54 cm (1 in).
- Brass tube construction within each core for improved reliability.
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| Brake Housing | Brake housing features cast rib design for durability. |
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| Separate Circuit Aftercooling | The 572R Series 2 features a Separate Circuit Aftercooler. Two of the AMOCS cores are dedicated to the aftercooler coolant circuit to achieve cooler inlet air temperatures, which increases performance and improves engine emissions. A separate water pump is used to circulate the aftercooler coolant. |
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| Serviceability | Modular core design permits removal of a single core without removing the entire radiator, reducing repair costs and downtime. AMOCS eliminates the top tank, side channels and one sealing surface, making it more reliable and easier to service. Also features a site gauge for quick service checks. |
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| Protection From Leaks | To reduce the potential for coolant leaks, brass tubes are welded to a large, thick header, improving strength of the tube-to-header joint. In conditions where abrasive materials can be airborne, the attachment sand blast grid should be used to inhibit core damage. |
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| Sand Blast Grid | In applications where airborne debris is prevalent, radiator core protection is a concern. To extend radiator life in harsh applications, a sand blast grid is available as an option to deflect the damaging debris the engine fan propels at the radiator. |
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| Drive Train | Rugged, durable, and reliable components deliver smooth, responsive power and lasting reliability. | 
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| Torque Divider | The 572R Series 2 single stage torque divider efficiently responds to changing load conditions by providing torque multiplication, therefore increasing drawbar power. Provides protection to the drive train components by preventing shock loads. The torque divider is efficiently matched to the power train components providing the superior performance you need. |
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| Torque Divider Benefits | The 572R Series 2 torque divider provides:
- High reliability.
- Proven component design.
- Low dynamic torque.
- Optimum combination of operating efficiency and driveline reliability.
- Components designed to absorb full engine power.
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| Operating Efficiency and Driveline Reliability | The 572R Series 2 torque divider attains the best combination of operating efficiency and driveline reliability. Reduces shock loads to the transmission and final drives by acting as a hydrodynamic component between the engine and transmission. |
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| Transmission | The proven planetary power shift transmission features three speeds forward and three speeds reverse and utilizes large diameter, high capacity, oil cooled clutches. To maximize the life of the transmission, the planetary design distributes loads and stresses over multiple gears.
- Controlled throttle shifting regulates engine speed during high-energy directional shifts for smoother operation and longer component life.
- The transmission and bevel gear set are modular by design and
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| Load Compensating Shifting | The 572R Series II automatically adjusts the clutch engagement timing according to load factor, resulting in improved performance and operator comfort during speed changes. Load compensating shifting reduces the amount of energy dissipated through the clutches helping extend transmission component life. |
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| Optional Roll Over Protective Structure | Provides for increased operator protection. | 
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| Roller Frames | Roller frames are tubular, to resist bending and twisting. | 
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| Electronic Clutch Pressure Control | The 572R Series 2 has an additional transmission-shifting feature for added performance and operator comfort — the Electronic Clutch Pressure Control (ECPC). This unique feature provides smoother shifting by regulating and modulating the individual clutches based on current operating conditions. |
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| Steering Clutch and Brakes | Oil cooled, hydraulically actuated, large diameter plates and clutch discs provide higher torque capacity and increased service life. | 
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| Thick, Large Diameter Plates and Clutch Disks | Thick, large diameter plates and disks provide torque capacity and increased service life. |
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| Cooling Oil Valve | Cooling oil valves control oil flow for brake heat dissipation, extending brake life. |
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| Electronic Steering and Transmission Controls | The 572R Series II provides Finger Tip Control for steering. Soft touch buttons located on the steering controls shift the electronically controlled transmission. |
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| Elevated Final Drive | Final drives are isolated from ground and work tool induced impact loads for extended power train life. | 
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| Double Reduction Planetary Final Drive | The 572R Series II uses double reduction planetary final drives. The final drives are designed with three (3) planetary gears to spread high torque loads out evenly for long final drive life. |
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| Splash Lubrication and Symmetric Duo-Cone® Seals | Splash lubrication and Duo-Cone seals maximize service life. |
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| Finger Tip Control | Finger Tip Control (FTC) combines steering, machine direction and gear selection into a single control system, which can be operated with one hand for enhanced operator comfort and increased productivity. | 
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| Three-Speed Forward/Reverse Gear Selection | Three-speed forward/reverse gear selection is achieved simply by pressing the yellow speed selection buttons. These buttons are integrated into the Finger Tip Control group.
• Automatic shifting features and reduced lever efforts for easier upshift and downshift, increased operator comfort, reduced fatigue, and precise control. |
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| Electronic Clutch and Brake Steering System | The electronic clutch and brake steering system incorporates low effort finger tip levers allowing the operator to work more precisely in close areas, around structures, obstacles and grade stakes. Pulling the left or right finger paddle causes the machine to turn according to the amount of paddle displacement.
• Aimed at operator comfort is the electric vertical adjustment of the FTC control group. This positions the operator’s arm for efficient ergonomics. |
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| Machine Direction | Moving the machine’s transmission forward/neutral/reverse direction lever controls machine direction. |
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| Auto-shift and Auto-kickdown | Auto-shift and Auto-kickdown include the following features:
- Auto-shift allows the operator to preselect a forward and reverse gear for frequent directional changes. The settings include first forward to second reverse, second forward to second reverse and second forward to first reverse.
- Auto-kickdown automatically downshifts from any gear when the machine detects a significant increase in load.
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| Pipelayer | Caterpillar pipelayer system includes winch and boom, counterweight and frame. |
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| Winches and Boom |
- Independent hydraulic winches drive boom and hook drawworks.
- Oil-disc brakes provide smooth operation, positive retention of boom and hook positions.
- Modular design allows fast replacement, easy field service, and testing.
- Infinitely variable speed controls for boom and hook allow precise control.
- Emergency free-fall function on load line control allows the operator to drop the load quickly.
- Tubular, cast-steel boom is rugged, delivers bette
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| Counterweight and Frame | - The narrow profile of the counterweight design minimizes impact on viewing area.
- Mainframe consists of box-section frame welded to a cast bevel gear case.
- Counterweight is extended hydraulically for load balance.
- Service latch mechanically locks counterweight in extended position.
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| Drawbar |
- Large jaw opening and pin diameter.
- Able to tow wide range of attachments.
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| Operator Station | Ergonomically designed for operator's comfort and productivity. | 
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| Seat | Ergonomically designed and fully adjustable for maximum comfort. The seat cushion reduces the pressure on the lower back and thighs while allowing unrestricted arm and leg movement. |
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| Dash | The instrument panel, with easy to read analog gauges and warning lamps, keeps the operator aware of any potential problems. All gauges and readouts are easily visible in direct sunlight. Auto-shift and Auto-kickdown controls are located within easy reach of the operator. New footpads keep the operator stable and comfortable during side slope applications. | 
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| Caterpillar Monitoring System | Provides gauges to monitor the temperature of the engine coolant, hydraulic oil, and power train oil, plus the fuel level. Also provides alert indicators that monitor engine oil pressure, inlet manifold temperature, coolant flow, electrical charging system, transmission oil filter, air filter service indicator, engine fault warning light, work tool warning indicator, and hydraulic filter.
The monitoring system has:
- Easy to read digital tachometer.
- Self-test at every start.</li
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| Counterweight Control | Adjusts the position of the counterweight for added machine stability. | 
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| Finger Tip Control | Finger Tip Control (FTC) combines steering, machine direction and gear selection into a single control system, which can be operated with one hand for enhanced operator comfort and precise control. |
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| Ergonomic Work Tool Controls | Pipelayer controls are low effort and allow simultaneous, precise positioning of the load line and boom with one hand. | 
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| Access Ladder | Direct access to the operator’s station utilizing ladder on left side of the machine. | 
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| Structure | Engineered and manufactured to provide durability in the most demanding work. | 
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| Undercarriage | The Caterpillar elevated sprocket undercarriage arrangement is designed for better balance, performance, and component life. |
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| Steel Sprocket Segments | 572R Series 2 sprocket segment material is metallurgically optimized to be fracture resistant. This allows the sprocket to live longer and better match a bushing turn. | 
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| Frame and Castings | Case and frames are built to absorb high impact shock loads and torsional forces. Castings are strategically located within the frame to add additional strength. Caterpillar uses robotic welding techniques in the assembly of the case and frames. This insures quality and reliability throughout the structure. The one-piece all welded chassis provides superior strength over bolted designs, and provides stiffness and durability.
- High strength steel mainframe resists impact shock loads.
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| Elevated Final Drive | - Isolates final drives from ground and work tool induced impact loads for extended power train life.
- Keeps sprocket teeth, bushings, and final drive away from abrasive materials and moisture.
- Single reduction planetary final drives provide long-lasting performance and durability.
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| Heavy-Duty Sealed and Lubricated Track | Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact.
- Virtually eliminates internal pin and bushing wear.
- Lubricant is held in a reservoir in the track pin.
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| Complete Guarding | Caterpillar undercarriages are designed with full length guarding on top of the track roller frame. This prevents abrasive materials from falling down on moving parts. |
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| Recoil System | The recoil system is protected from the elements and maintained in a sealed oil-filled cavity for years of reliable service. |
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| Hydraulic Track Adjuster | Adjusting the track on the 572R Series 2 is done hydraulically by removing a plate on the top of the roller frames. Adding or removing grease adjusts the track for optimum operation. |
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| Guiding Guards | Heavy-duty track guiding/guard attachment provides maximum protection to track pin bosses roller flanges, and end guides. |
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| Optional High Flange Improved Track Rollers | Combined with center or full length roller guard attachments greatly improve track guiding for demanding side slope conditions. |
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| Serviceability | Modular design moves Caterpillar a generation ahead in simplifying service and maintenance. |
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| Product Link | This option allows the customer or dealer to obtain machine diagnostics and location from their offices. Product Link provides updates on service meter hours, machine condition, machine location, as well as integrated mapping/route planning. | 
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| Electronic Monitoring System | Features a flexible monitoring system that is easily upgraded by flashing software rather than replacing the module, reducing parts cost. As technology changes and new electronics and software become available, the machine's monitoring system is easily updated. | 
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| Built-in Serviceability | Less service time means more working time. Major components are designed as modules and most can be removed without disturbing or removing other components. |
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| High-Speed Oil Change System | High-speed oil change system optional for quick service to engine and power train oil. | 
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| Pressure Test Points | Pressure test points for power train and hydraulic systems are provided. |
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| Grouped Service Points and Accessibility | Designed with ease and simplicity of service in mind.
- Grouped pressure taps allow you to measure and troubleshoot the hydraulic system. Two groups of remote taps are available, one in the right hand fender and the second behind the transmission guard on the rear of the machine.
- Hinged engine doors with mechanical stops provide easy access to secondary fuel filters, oil filters, engine oil filler tube, and engine air filter.
- Left side enclosure access doors provide easy
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| Hinged Bottom Guard and Radiator Grille | For quick accessibility, service points such as the radiator grille and bottom guard are hinged for improved serviceability and reduced downtime. |
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| Quick Disconnect Fittings | Quick disconnect fittings allow for fast diagnosis of the power train and attachment oil systems. |
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| Service Intervals | The time between fluid and filter service intervals minimizes downtime and maximizes productivity for the 572R II. |
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| Diagnostics | Cat 572R Series 2 diagnostic and troubleshooting capabilities are among the best. The machine dashboard allows for quick identification of a problem and its cause, utilizing a three level warning system. Diagnostic connector allows Caterpillar dealers to quickly troubleshoot or access stored data with the use of Electronic Technician (Cat ET) or ECAP. |
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| Ecology Drains | Ecology drains provide an environmental method to drain fluids. Standard for the engine oil, coolant, hydraulic oil, fuel tank, and power train case. Optional for the transmission and torque converter. |
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| Advanced Modular Cooling System | Individual radiator core modules are easily serviced without major component removal. |
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| Easy Engine Maintenance | Many parts can be rebuilt and are available as remanufactured components.
- Parent-metal block can be rebored twice and dry-sleeved.
- Connecting rods can be removed through cylinder tops.
- Camshaft followers and push rods can be replaced without removing camshaft.
- Extended oil and engine filter change intervals up to 500 hours.
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| Fast Fuel System | The 572R Series II includes an optional fast fuel fill attachment with positive fuel shut-off to prevent fuel spillage. | 
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| S•O•SSM Analysis | Scheduled Oil Sampling made easier through live sampling ports for the engine oil, power train, coolant, and hydraulics. |
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| Total Customer Support | Excellent parts availability and the best service capability help increase productivity. | 
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| Product Support | Your Cat Dealer offers a wide range of services that can be set up under a Customer Support Agreement when you purchase your equipment. Your dealer will help you choose a plan that can cover everything from the machine and attachment selection to replacement. This will help you get the best return on your investment. |
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| Remanufactured Components | Save money with remanufactured parts. You receive the same warranty and reliability as new products at a cost savings of 40 to 70 percent. |
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| Service Capability | Whether in the dealer’s fully equipped shop or in the field, you will get trained service technicians using the latest technology and tools. |
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| Selection | Make detailed comparisons of the machines you are considering before you buy. How long do components last? What is the cost of preventive maintenance? What is the true cost of lost production? Your Cat Dealer can give you precise answers to these questions. |
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| Purchase | Consider the financing options available as well as day-to-day operating costs. This is also the time to look at dealer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over the long run. |
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| Replacement | Repair, rebuild, or replace? Your Cat Dealer can help evaluate the cost involved so you can make the right choice. |
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| Maintenance | More and more equipment buyers are planning for effective maintenance before buying equipment. Choose from your dealer’s wide range of maintenance services at the time of your purchase. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as Scheduled Oil Sampling and Technical Analysis help avoid unscheduled repairs. |
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