User manual CATERPILLAR 374D L BROCHURE

[. . . ] The main pump flow has increased 10 percent to provide shorter cycle times. This also provides shorter cycle times with higher digging forces, increased bucket fill factors. Stick cylinder diameter for mass and reach configurations has been increased along with the bucket cylinder diameter on the reach stick. These increases produce 17 percent higher digging forces. · · · Proportional Priority Pressure Compensation (PPPC) Hydraulics Load-sensing, PPPC system, with Caterpillar-developed electronic actuation, provides high efficiency and excellent controllability. [. . . ] The longer recoil spring improves durability and service life of the undercarriage while the offset idler increases the stability of the machine while working over the front. Positive Pin Retention 2 (PPR2) Track links with the PPR2 are provided as standard on the 374D L. The PPR2 track link is designed to prevent looseness of the track pin in the track link and to reduce stress concentrations. The PPR2 system eliminates pin walking for increased service life. Carrier Rollers The carrier rollers use a floating "Duo-Cone" seal. The Duo-Cone seal protects the moving parts in the carrier roller from water and dirt, and makes lubrication maintenance-free. 8 Front Linkage Front Linkage Designed for flexibility and high productivity Cat excavator booms and sticks are built for performance and long service life. · · Castings and forgings are used at high stress areas such as boom nose, boom foot, boom cylinder and stick foot. All booms and sticks are stress-relieved for optimal life and durability, while minimizing weight for improved performance. All booms and sticks are ultrasonic inspected. · Bucket Linkage Two bucket linkages are available for the 374D L. Both linkages are available with or without a lifting eye on the power link. · · The VB2 bucket linkage is for use with the reach sticks and VB2-family buckets The WB2 bucket linkage is for use with the mass sticks and WB2-family buckets Boom Construction 374D L booms feature a large cross-section to improve strength and reduce weight. Booms are designed for strength and maximum payload. Stick Construction Sticks are made of high-tensile strength steel in a boxsection design, making them strong and light. All sticks are reinforced with a thick baffle plate for added rigidity. Work tools can be mounted directly to the machine or a quick coupler can be added, making it quick and easy to release one work tool and pick up another. Couplers Caterpillar offers two quick coupler styles: dedicated and pin grabber. Each allows quick tool changes. Center-LockTM Pin Grabber Coupler Center-Lock is the Caterpillar pin grabber style coupler and features a patent pending locking system. A highly visible secondary lock clearly shows the operator when the coupler is engaged or disengaged from the bucket or work tool. Work Tools An extensive range of Cat Work Tools for the 374D L includes buckets, hammers, grapples, shears, multi-processors and rippers. Each are designed to optimize the versatility and performance of your machine. Cat Work Tools and couplers are ready to work in a variety of applications, such as site and structure demolition, debris clean-up, truck loading, scrap processing, breaking road surfaces and bed rock. Hydraulic Kits Caterpillar offers field-installed hydraulic kits designed to simplify the process of ordering and installing the right kit. Modular kit designs integrate Cat Work Tools with Cat Hydraulic Excavators. Hoses are pre-made, tubes are pre-bent and pre-painted and there are comprehensive instructions. 11 Environment Emissions 374D L meets a wide range of environmental requirements ACERT® Technology is a differentiated technology that reduces emissions at the point of combustion. The technology capitalizes on proven Caterpillar leadership in three core engine systems: fuel, air and electronics. Electro Magnetic Compliance The 374D L meets the following EMC (Electro Magnetic Compliance) requirements: · · · ISO 13766 Earth Moving Machinery ­ Electromagnetic compliance EU Directive 89/336/EEC Aus EMC Framework Fluid Management Several serviceability elements are designed into the 374D L to limit fluid spillage while performing routine maintenance. Ecology Drains Ecology drains are provided for the fuel and hydraulic tanks, allowing fluids to be captured in a container when draining the tanks. 12 Service and Maintenance Service Intervals Long service intervals reduce maintenance costs. Engine oil, oil filter and fuel filters are at 500 hours. Fast, easy service has been designed into the 374D L Oil Sample and Pressure Ports Oil sample and pressure ports provide easy checking of machine condition and are standard on every machine. Hydraulic Capsule Filters The return filters or capsule filters for the hydraulic system are located beside the hydraulic tank. The filter elements are removable without spilling hydraulic oil. Service Points Service points are centrally located with easy access to facilitate routine maintenance. Pilot Hydraulic System Filter Pilot hydraulic system filter keeps contaminants from the pilot system and is located in the pump compartment. Remote Greasing Block A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations. Radial Seal Cleaner Radial seal main air cleaner with precleaner has a doublelayered filter element for more efficient filtration. No tools are required to change the element. Fuel-Water Separator The water separator removes water from fuel, even when under pressure, and the water level can be monitored in the cab. 13 Complete Customer Support Product Support Cat dealer services help you operate longer with lower costs Cat dealers utilize a worldwide computer parts network to minimize machine downtime. [. . . ] Lifting capacities are based on the machine standing on a rm, uniform supporting surface. Weight of all lifting accessories must be deducted from the above lifting capacities. Always refer to the appropriate Operation and Maintenance Manual for speci c product information. ® ® ® ® Load Radius Over Side ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® 21 374D L Hydraulic Excavator Specifications 374D L Bucket Speci cations and Compatibility Width Linkage Without Quick Coupler General Duty (GD) VB2 VB2 VB2 WB2 WB2 General Duty XL (GDXL) Heavy Duty (HD) VB2 VB2 VB2 VB2 VB2 WB2 WB2 Severe Duty (SD) VB2 VB2 VB2 VB2 WB2 WB2 WB2 WB2 WB2 Extreme Duty (XD) WB2 WB2 WB2 1525 1900 1900 2000 2100 2000 1220 1700 1900 1900 2100 2250 1100 1525 1700 1900 1800 1900 2000 2100 2200 2000 2100 2200 60 75 75 79 83 79 48 66 75 75 83 89 43 60 66 75 71 75 79 83 87 79 83 87 2. 9 3. 8 3. 8 4. 6 5. 0 4. 6 2. 2 3. 3 3. 8 3. 8 5. 0 5. 3 1. 9 2. 9 3. 3 3. 8 3. 7 4. 0 4. 4 4. 6 5. 0 4. 4 4. 6 5. 0 3. 9 5. 0 5. 0 6. 0 6. 5 6. 0 2. 9 4. 3 5. 0 5. 0 6. 5 7. 0 2. 5 3. 9 4. 3 5. 0 4. 8 5. 25 5. 75 6. 0 6. 5 5. 75 6. 0 6. 5 3205 3622 3720 4016 4167 4077 2892 3529 3881 3782 4345 4591 2840 3453 3653 4016 4667 4825 4982 5141 5341 5785 5982 6212 7, 064 7, 982 8, 198 8, 851 9, 184 8, 986 6, 373 7, 778 8, 553 8, 336 9, 576 10, 119 6, 259 7, 610 8, 051 8, 851 10, 286 10, 634 10, 980 11, 331 11, 772 12, 750 13, 184 13, 691 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% 90% kg lb With Quick Coupler (CW-70) General Duty (GD) Severe Duty (SD) Extreme Duty (XD) VB2 WB2 WB2 WB2 1900 1900 2000 2000 75 75 79 79 3. 8 4 4. 4 4. 4 5. 0 5. 25 5. 75 5. 75 3668 4802 4959 5797 8, 084 10, 584 10, 930 12, 777 100% 90% 90% 90% kg lb 13 470 29, 688 12 580 27, 726 11 970 26, 382 10 930 24, 090 10 180 22, 437 9390 20, 696 12 150 26, 779 11 260 24, 817 10 650 23, 473 9610 21, 180 8860 19, 527 8070 17, 786 mm in Capacity m3 yd3 Weight kg lb Fill % ME boom 7. 0 m M2. 57WB2 M3. 0WB2 R2. 84VB2 GP boom 7. 8 m R3. 6VB2 R4. 15VB2 R4. 67VB2 Maximum dynamic load pin-on (payload + bucket) Maximum dynamic load with CW coupler (payload + bucket) The above gures are based on maximum recommended dynamic working weights with front linkage fully extended at ground line with bucket curled. Bucket weights include General Duty tips. 1800 kg/m3 (3, 000 lb/yd3) or greater 1500 kg/m3 (2, 500 lb/yd3) 1200 kg/m3 (2, 000 lb/yd3) Not Recommended 22 374D L Standard Equipment Standard equipment may vary. [. . . ]