Heavy equipment machinery

May 31, 2007

Engineers Material Handling Processing

Filed under: Material Handlers

Material handling is a vital part of factory and industrial processes. Material handling covers a wide range of programs such as waste handling, assembly line management, storage and material transport. With the advent of the latest technology, robotics and automation techniques have become more popular in the technique of material handling. The material handling expert make the conclusions regarding the efficiency of the operation and suggest safety precautions that must be taken. There are several material handling equipments which must be used to complete the task fastly and safely and the process does not cost too much.

The special operators that are needed to handle the materials in the construction sites and other industries are crane and tower operators, excavation and loading machine operators, hoist and wench operators and industrial truck and tractor operators. The equipment operators require large number of machinery to move the petroleum products, construction materials, earth and other heavy materials around the construction site, factory, warehouse of off ships or trucks. The materials are displaced short distances. These machines are for the project sites. Excavation and loading machine operators are needed in the construction and mining industries. The operators dig and load sand, earth and gravel into the trucks and conveyors with the help of machineries which have shovels, buckets and scoops.

Engineers Material Handling Processing In with its most comprehensive search on the material handling and processing engineers is a brilliant account to bank upon. The materials, machinery and other heavy bulk materials and objects are lifted by crane and tower operators. The crane and tower operators work mostly in the transportation equipment manufacturing industries and the metal and metal fabrication industries. They work on the construction projects also.

 The hoist and winch operators are the ones which control the movement of cages, platforms and cables. It is used to move workers, construction materials, manufacturing, logging and more to mention. The industrial truck and tractor operators drive and control the trucks or tractors that are equipped with lifting devices. They have forklift or boom and trailer hitches to lift the materials and move them to their designated place. Engineers Material Handling Processing In with its most informative search on the material handling and processing engineers is indeed an indispensable account. The bulk material is also processed by the engineers.

http://www.encyclocentral.com/2501-Engineers_Material_Handling_Processing.html

Materials handling provider sponsors motocross

Filed under: Material Handlers

Hyundai Heavy Industries Europe (HHIE), the European distributor of Hyundai construction and materials handling equipment, is the official sponsor for the next three seasons of the FIM MX1 Motocross World Championship which has kicked off with the Benelux Grand Prix at Valkenswaard in the Netherlands on 1st April 2007.

FIM MX1 is the worldwide competition in motocross, comparable to Formula in car racing.

The reason behind Hyundai’s participation in this sport is, says HHIE Managing Director J W Hwang, ‘To build on the strong synergy which exists between the challenge of high-performance motorcycles on the race track and hard-working construction site machines, standing up to the challenge of performing competently and reliably in a tough and highly competitive off-road working environment.

This is something with which owners and operators of construction machines can readily identify’.

‘Motocross is a competitive and entertaining sport, with a strong following in Europe and around the world.

It is also without a doubt a top-class sport.

Only the most professional teams and pilots can reach this level.

The benefit for Hyundai is that it serves to endorse our belief in maintaining the best performance and the highest reliability.

In addition, Motocross is full of fun and excitement for everyone’, Marketing Manager, Michel de Weert, adds.

The 2007 season promises to be a particularly exciting one, now that the legendary ten-times world champion, Stefan Everts of Belgium, has retired, leaving the field open to new challengers.

Thirteen of this season’s 16 Grand Prix events are being held in Europe.

After the Valkenswaard opening event, others are scheduled for Spain, Italy, France, South Africa, Japan and Great Britain, to mention a few, and each event draws crowds of up to 39.000 spectators.

‘After a lot of hard work and investment done with a lot of passion’ Giuseppe Luongo, Youthstream President, said, ‘We are very proud to have sensibly increased the figures of Motocross.

Over half a million spectators visit our events, close to 600 million watch the Grand Prix on television with more than 700 hours of television coverage and naturally live-streaming on internet, and the world wide media allows people to follow the FIM Motocross World Championship easily…

Thanks to these numbers, the professional work and the excitement of the Motocross racing now big brands like Hyundai Heavy Industries are interested to invest in our sport.

One of our main concerns is to develop the Motocross circuits to be more spectacular and at the same time safer and for this reason by using the new high standard Hyundai machinery to work and to develop the track will help us and the organizer to continue to improve.

We thank Hyundai Heavy Industries for believing in us and we will make the maximum effort to make a long road together.

Shortly we will announce other world leading brands which will be joining us’.

Youthstream is the company that manages the exclusive television, marketing and promotional world wide rights of the FIM Motocross World Championship, the FIM Motocross of Nations, the FIM SuperMoto World Championship, the FIM SuperMoto of Nations, the FIM Snowcross World Championship, the UEM Motocross European Championship and the UEM SuperMoto European Championship.

Hyundai will be on hand with a strong visible and physical presence at each FIM MX1 motocross event.

Hyundai construction machines will be in use both for building and repairing the tracks, and for visitors to take a closer look.

Transportation of those machines will be provided by the professional services of ALS Worldwide Freight Management.

http://www.manufacturingtalk.com/news/hyv/hyv100.html

Korean materials handling

Filed under: Material Handlers

Hyundai Heavy Industries exhibited 35 machines from forklift trucks through wheel loaders, mini and wheeled excavators to crawler excavators at Bauma 2007, and occupied 4,500 m2 of the outside area. The exhibition stand was located in the same position as it was at Bauma three years ago. But the Korean construction equipment manufacturer has made a huge leap forward since then.

Hyundai Heavy Industries has seen annual growth in Europe reach double figures, with the 40 percent growth rate for 2006 representing the best result so far.

From 2007, the company will be the official sponsor of the next three seasons of the FIM MX1 Motocross World Championship.

Every hour machines showed what they can do in the 550 m demonstration area.

From the grandstand, up to 115 spectators experienced the demonstrations at close distance.

A large LED screen behind the stand broadcasted the action to those outside the stand.
The large pavilion provided 650 m of space over two floors for a VIP lounge, bar and meeting rooms.

In the drivers’ tent Hyundai invites construction equipment operators to relaxed and chatted in an informal environment.

The equipment on display included 35 machines from forklift trucks through wheel loaders, mini and wheeled excavators to crawler excavators.

The completely new machinery that the company showed included the R800LC-7A, an 80t crawler excavator for use in the mining industry and the R35Z-7, a zero tail-swing compact excavator with a 3.5t operating weight.

With its 81.5t operating weight, 343 kW (466 hp) power and a 3.4 m bucket capacity, the R800LC-7A provides all that is needed for efficient working and great handling performance.

Using the latest equipment technology from Cummins, a computer-aided control and monitoring system as well as FEM optimised design, it is already pre-programmed for tackling all types of applications.

The 80-tonner shown at Bauma is still a prototype but will go into mass production as from 2008.

The strength of the new R35Z-7 lies in its compact dimensions, thanks to which the round cab remains within the dimensions of the undercarriage during the whole swinging operation.

Its extremely compact design allows the excavator to continue working effectively even in the most confined space.

However, this optimum economy of space has certainly not been achieved at the expense of the working area, which is perfectly comparable with that of standard machines.

The company has significantly upgraded the whole of its remaining range of excavators and wheel loaders to the ‘Dash 7A’ generation by its use of low-emission TIER 3 engines, most of them with Common Rail Technology, which is renowned for its quiet running producing significantly reduced noise levels.

The range will gradually be brought to market over the course of the year, along with numerous refinements to further enhance the practical user value and efficiency of the equipment.

The most obvious of these include the new multifunction joysticks and the new graphic displays with user-defined menu navigation and additional functions to increase operator comfort and safety.

A new, but not true, item of the Hyundai product range is the R360LC-7A DM, a 36t excavator with a Biurrarena demolition arm.

Biurrarena is Hyundai’s Spanish importer, which also converts the R450LC-7A to a DM version (Demolition).

A significantly improved self diagnostic system rounds off the refinements.

The HRDT 2.0 generation, which is compatible with the Windows 98, Windows 2000 and Windows XP operating systems, has an improved screen display and an extended range of functions: these two features make it easier to diagnose operating faults and increase the availability of the machine.

It now also provides a structured overview of monitored engine data, immediate detection of error functions and retrieval of specific service information.

http://www.manufacturingtalk.com/news/hyv/hyv101.html

TICO named world leader in materials handing by international industry publications

Filed under: Material Handlers

Two leading international industry publications have independently named Toyota Industries Corporation (TICO) as the world leader in materials handing.

In the case of Germany’s Logistik Journal, it is the fifth consecutive time the publication has recognised TICO as the world leader.

Figures published in Logistik Journal and DNF Magazine show Toyota’s material handling business from April 2005 to March 2006, achieved global sales of more than 180,000 machines.

Logistik Journal and DNF Magazine revealed that Toyota had a material handling turnover of more than four billion Euro in the 12 months to March 2006, the first time a material handling manufacturer has exceeded that figure in a year.

Both magazine surveys confirmed the on-going strength of the material handling market, despite economic uncertainty in some markets. Overall sales of Toyota rose by almost 10%.

Toyota Industries Corporation Australia (TICA) President, Steve Harper, said the result confirmed Toyota’s commitment to quality, safety, reliability and usability in forklift trucks.

"To be acknowledged as world number one yet again is a great achievement and a reflection of Toyota’s progressive approach to materials handling in the 21st Century," Mr Harper said.

"Retaining the position of world leader in materials handling is an outstanding achievement for Toyota and demonstrates the organisation’s ongoing commitment to developing industry-leading materials handling solutions.

"TICO is the industry leader in its level of investment in research and development. Through innovation and technological expertise, our forklifts maintain their industry-leading reputation for reliability, quality and safety."

Toyota exported its first forklifts from Japan in 1958 and has developed a leading reputation for quality, safety and reliability.

Toyota sold its first forklift truck in Australia in 1968 and has led the Australian counter-balance forklift market continuously for 20 years.

TICA distributes the Toyota Industrial Equipment range of industrial equipment, along with the BT Lift Truck and Raymond Forklift ranges of warehouse equipment.

http://www.ferret.com.au/articles/z1/view.asp?id=48828

Korean materials handling firm at huge exhibition

Filed under: Material Handlers

Hyundai Heavy Industries exhibited 35 machines from forklift trucks through wheel loaders, mini and wheeled excavators to crawler excavators at Bauma 2007, and occupied 4,500 m2 of the outside area. The exhibition stand was located in the same position as it was at Bauma three years ago. But the Korean construction equipment manufacturer has made a huge leap forward since then.

Hyundai Heavy Industries has seen annual growth in Europe reach double figures, with the 40 percent growth rate for 2006 representing the best result so far.

From 2007, the company will be the official sponsor of the next three seasons of the FIM MX1 Motocross World Championship.

Every hour machines showed what they can do in the 550 m demonstration area.

From the grandstand, up to 115 spectators experienced the demonstrations at close distance.

A large LED screen behind the stand broadcasted the action to those outside the stand.

The large pavilion provided 650 m of space over two floors for a VIP lounge, bar and meeting rooms.

In the drivers’ tent Hyundai invites construction equipment operators to relaxed and chatted in an informal environment.

The equipment on display included 35 machines from forklift trucks through wheel loaders, mini and wheeled excavators to crawler excavators.

The completely new machinery that the company showed included the R800LC-7A, an 80t crawler excavator for use in the mining industry and the R35Z-7, a zero tail-swing compact excavator with a 3.5t operating weight.

With its 81.5t operating weight, 343 kW (466 hp) power and a 3.4 m bucket capacity, the R800LC-7A provides all that is needed for efficient working and great handling performance.

Using the latest equipment technology from Cummins, a computer-aided control and monitoring system as well as FEM optimised design, it is already pre-programmed for tackling all types of applications.

The 80-tonner shown at Bauma is still a prototype but will go into mass production as from 2008.

The strength of the new R35Z-7 lies in its compact dimensions, thanks to which the round cab remains within the dimensions of the undercarriage during the whole swinging operation.

Its extremely compact design allows the excavator to continue working effectively even in the most confined space.

However, this optimum economy of space has certainly not been achieved at the expense of the working area, which is perfectly comparable with that of standard machines.

The company has significantly upgraded the whole of its remaining range of excavators and wheel loaders to the ‘Dash 7A’ generation by its use of low-emission TIER 3 engines, most of them with Common Rail Technology, which is renowned for its quiet running producing significantly reduced noise levels.

The range will gradually be brought to market over the course of the year, along with numerous refinements to further enhance the practical user value and efficiency of the equipment.

The most obvious of these include the new multifunction joysticks and the new graphic displays with user-defined menu navigation and additional functions to increase operator comfort and safety.

A new, but not true, item of the Hyundai product range is the R360LC-7A DM, a 36t excavator with a Biurrarena demolition arm.

Biurrarena is Hyundai’s Spanish importer, which also converts the R450LC-7A to a DM version (Demolition).

A significantly improved self diagnostic system rounds off the refinements.

The HRDT 2.0 generation, which is compatible with the Windows 98, Windows 2000 and Windows XP operating systems, has an improved screen display and an extended range of functions: these two features make it easier to diagnose operating faults and increase the availability of the machine.

It now also provides a structured overview of monitored engine data, immediate detection of error functions and retrieval of specific service information.

http://www.manufacturingtalk.com/news/hyv/hyv101.html

May 30, 2007

New Knuckleboom Loaders Expand Deere’s Timber Harvesting Line

Filed under: Knuckleboom Loaders

Since John Deere’s acquisition of Timberjack last year, the company has worked to expand its range of forestry equipment and recently, the John Deere Forestry Group entered the knuckleboom log loader market with three purpose-built machines, the 335, 435 and 535 loaders, which feature optional delimbers and slashers.

"The introduction of these machines really rounds out the forestry product line offered by John Deere," said Product Manager Loading Division Keith Wilson. "With the introduction of the knuckleboom log loaders, Deere now offers a full line of equipment that also includes other log loaders, fellerbunchers and log skidders."

The 335 and 435 loaders are powered by the six-cylinder turbocharged John Deere 6068T diesel engine, which has a maximum output of 170 hp at 2200 rpm. The 535 is powered by a 6081A six-cylinder turbocharged/aftercooled diesel with a maximum output of 250 hp at 2200 rpm. The engines are mounted on Lord rubber isolation mounts to reduce vibration, smooth operation and lower noise emissions from the machine.

The engine packages include an AKG Thermal Systems side-by-side radiator and oil coolers, Nelson mufflers, and Donaldson air filters. The electrical system for the machines is a 12 V, self-energizing design with a 95 amp alternator - the 535 uses a 120 amp alternator. Each machine is equipped with two 12 V batteries and the 535 includes a master power disconnect switch.

 The hydraulic system for the log loaders uses a mix of components, including pumps, motors, valves and manifolds from Parker Hannifin and its Commercial Intertech subsidiary.

The engine drives a triple gear pump assembly that provides hydraulic flow for various machine functions. Each pump section for the 335 and 435 machines has a flow of 55, 45 and 30 gpm respectively, while the 535 has flows of 70, 60 and 40 gpm respectively.

The system pressure for the 335 is 2300 psi for the main and jib sections and 2400 psi for the swing system. The 435 features system pressures of 2500 and 2400 psi respectively while the 535 includes system pressures of 2500, 3000 and 2400 psi.

The 335 and 435 use two 6 in. bore x 3 in. rod cylinders on the boom, a 7 in. bore x 3.5 in. rod cylinder on the jib and four 6 in. bore x 3 in. rod cylinders with locking valves on the stabilizers. The 535 uses two 6.3 in. bore x 3.7 in. rod solid cylinders on the boom, one 7 in. bore x 3.7 in. rod solid cylinder on the jib and 4.7 in. bore x 4 in. solid rod cylinders for machine stabilization. The stabilizer cylinders also include cylinder-mounted locking valves.

Hydraulic system filtration is accomplished via a 10 micron Hydac filter located in the return line with a 25 psi bypass and visual indicator. The hydraulic reservoir for the 335, 435 and 535 has a 100 gal. capacity. The 335 and 435 have a "direct fill" filler system while the 535 uses a hand-operated hydraulic oil pump that fills the system through filters.

For higher production with added operator safety, the hydraulic system incorporates Voac joysticks to control the pilot-operated swing controls, which are interfaced with an enable switch that isolates hydraulic pressure and prevents boom movement when the engine is running and the operator is off the seat.

The swing system for the loaders is a 360[degrees] continuous rotation design. The 335 and 435 rotate at 7 rpm while the 535 can rotate as fast as 9 rpm. The drive system utilizes a two-stage Fairfield planetary gearbox with a Parker gear motor. The system is greaseable from the cab. Swing torque for the 335 and 435 is 36,540 lb.ft., while the 535 is 44,500 ft.lb. Standard operating weights for the machines are 23,336 lb. for the 335, 29,550 lb. for the 435 and 33,700 lb. for the 535.

The cabs are designed with certified FOPS, plus operator protection systems constructed with heavy-duty front windshield guards. In-cab machine instrumentation is provided by Beede.

Also available for these loaders are the 4800 delimber, the S240 (40 in.) and S260 (58 in.) reversible bar saws, and the reversible slasher and swing arm. The optional delimber is a self-contained unit powered by optional hydraulics with the accumulator mounted on board.

http://www.findarticles.com/p/articles/mi_m0FZX/is_4_67/ai_74013098/pg_1

335C Knuckleboom Loader

Filed under: Knuckleboom Loaders

Logjams are History
Nothing can bottleneck production like a poor-performing log loader. The new 335 John Deere Knuckleboom goes hard all day, every day.

King of Swing
High swing torque, heavy-duty construction and exceptional boom strength make swinging and delimbing easy. The John Deere 6068T PowerTech™ engine provides the horsepower and torque that helps make the 335 Knuckleboom the king of swing.

From the sheer comfort of the fully adjustable deluxe suspension seat, operators will find the Deere loader to be well-balanced, extremely stable and very smooth.

Visit your John Deere dealer to learn more about the variety of slashers, delimbers and grapples that match the new Deere Knucklebooms.

  • 170 Horsepower engine
  • Lift Capacity - 23,700 lb. @ 10 ft.
  • Operating Weight - 23,336 lbs. (10 585kg)
  • Maximum Boom Reach - 27 ft.

http://www.deere.com/en_US/cfd/forestry/deere_forestry/knucklebooms/335_forestry_general.html#
 

Log Truck Backs into Loader Operator

Filed under: Knuckleboom Loaders

Background
A log truck driver was waiting to back under a knuckleboom loader while another truck was being loaded at the landing.

Personal Characteristics
The truck driver was in his 50s and experienced.

Unsafe Act or Condition
The waiting truck was partly turned so that the loading area was in the truck’s blind spot. After the first truck was loaded and had pulled away, the knuckleboom loader operator set the grapple down in the loading area. He exited the cab to check hoses or to fix a problem with the grapple. The driver of the waiting truck did not see him and backed into the loading area, assuming it was clear. The knuckleboom operator was unaware the truck was backing toward him. (The log truck had no ‘backing up’ alarm.’)

Accident
The truck continued backing and pinched the knuckleboom loader operator between the moving trailer and the grapple.

Injury
The knuckleboom loader operator was seriously injured. The truck driver pulled the trailer forward, and the injured man subsequently was flown to a hospital for treatment.

The knuckleboom loader operator suffered four broken ribs. He was hospitalized more than a week in intensive care. He is expected to make a complete recovery.

Recommendations

  • Always be alert as to the whereabouts and actions of others on a logging job, especially at the landing. Remember: it is the responsibility of those in an enclosed cab to watch out for ground workers.
  • Use CB radios, two-way radios or other visible-audible means to communicate an ‘all clear’ signal or announce potential hazards.
  • Take time to be safe. Saving a few minutes of time is not worth the possibility of a life-changing accident. Plan ahead, and think about the consequences of actions ahead of time.
  • Keep first aid and CPR certification current.

http://www.timberlinemag.com/articledatabase/view.asp?articleID=2071

Knuckleboom Loaders

Filed under: Knuckleboom Loaders

Knuckleboom Loaders

Hazard Summary

Several accidents in the Nova Scotia forest industry have occurred this year when the turntable bearings on knuckleboom loaders have broken free, causing the loader to fall.  Investigations showed that several bolts, which attach the turntable bearing to the body of the vehicle, appeared to have been broken for some time. Those broken bolts placed additional strain on the remaining bolts.  Those bolts eventually broke, causing the loader to fall.

Recommended Preventive Measures

1. Maintain equipment according to the manufacturers’ specifications and inspection schedules,
2. If there is no record of maintenance and materials used in maintaining the equipment, bolts and washers should be replaced using material recommended by the manufacturer.
3. Equipment should be operated by a person who has the knowledge, training, and experience to safely operate the equipment.
4. The equipment should also be serviced and maintained by a person who has the knowledge, training, and experience to safely perform those duties.

http://www.gov.ns.ca/enla/healthandsafety/knuckleboomloaders.asp

May 28, 2007

Caterpillar launches G-series wheel tractor scrapers

Filed under: Industrial Tractors

The new Caterpillar G-series wheel tractor scrapers 621G, 623G, 627G, 631G, 637G and 657G have been improved to boost productivity and lower operating costs. The 627G, 637G and 657G tandem-powered machines have new electronically controlled scraper engines that incorporate dual power capabilities, just as the tractor engines do. Each of the new scrapers has a new productivity enhancing operator station, a redesigned scraper bowl with 10 percent more capacity, and the latest electronic monitoring system to simplify maintenance.

All G-series wheel tractor scrapers incorporate Cat’s EU Stage IIIa compliant ACERT Technology engines. The electronically controlled engines feature the Caterpillar HEUI fuel system and comply with current emissions regulations. Each engine is electronically integrated with an automatic planetary powershift transmission to provide maximum power to the cutting edge and high-production haul road speed. The engines ranging from C9 to C15 and C18 provide advanced electronic control, precise fuel delivery and refined air management for outstanding engine performance.

ACERT building blocks include:
Fuel delivery: The multiple-injection process introduces fuel into the combustion chamber in a number of precisely controlled "microbursts". Injecting fuel in this way allows for precise shaping of the combustion cycle. For optimum performance, the multiple-injection process can be tailored for different applications and engine sizes.

Air management: Advanced air management also plays a critical role in reducing emissions. Stage IIIa off-road engines include crossflow heads and wastegated turbochargers. Advantages of wastegated turbos include higher boost levels over the entire operating range resulting in better low-end performance and response. Crossflow heads improve breathing for optimized combustion.

Electronics: The "brain power" for ACERT Technology comes from Cat ADEM 4 electronic controllers. The Cat ADEM 4 can govern fuel delivery and other engine processes with incredible precision. Cat ADEM 4 provides the ability to link machine performance directly with the engine.

The 621G, the 623G and 627G scrapers all use the Cat C15 as the tractor engine. The dual horsepower engine produces net power 246 kW in lower gears and 272 kW in higher gears. Heaped bowl capacity is 17 m3 for 621G and 627G and 17.5 m3 for 623G.

The 631G, 637G and 657G scrapers use the C18 as the tractor engine. The engine in the 630s produces a net power of 345 kW in lower gears and 373 kW in higher gears. The engine in the 657G produces 421 kW in lower gears and 447 kW in higher gears. Heaped bowl capacity for 631G and 637G is 26 m3 and for 657G 33.6 m3.

The tandem-powered 627G and 637G now incorporate the Cat C9 scraper engine for peak performance and high productivity in self-loading applications. The C9 for 627G is a dual horsepower engine with 178 kW while loading and dumping and 198 kW on the haul and return roads. The loading and hauling engine powers 637G for are 198 kW and 211 kW. The 657G features the bigger C15 engine. Dual horsepower capabilities enable the scraper engine to produce more power in higher gear ranges for improved grade-ability and reduced cycle times.

Redesigned operator station enhances productivity
The redesigned operator station promotes efficient operation throughout the entire work shift. A new, adjustable Cat Comfort Cloth Seat includes adjustable armrests, and it swivels and locks in four different positions to provide the optimum operating position in the cut or on the haul. The seat suspension features a self-contained air compressor with a high performance air shock absorber. The revised steering column increases legroom.

The redesigned hood has sloped corners to enhance sight lines. The exhaust is located at the back of the hood for enhanced sight lines to the right of the machine.

The improved scrapers retain the single lever implement control, which combines the traditional three implement levers—bowl, apron and ejector—into one joystick. The operator can raise and lower the bowl and actuate the apron and ejector with the single joystick. On appropriate models, a trigger on the joystick controls the auger or the bail. The transmission hold and cushion hitch switches are incorporated into the joystick as well.

Bigger, stronger scraper bowl
The redesigned scraper bowl increases bowl capacity 10 percent for each machine. The new design also improves draft arm protection and load retention. The low profile design offers less resistance to incoming materials, and cellular construction adds strength and dent resistance to the bowl sides and floor.

The bulldozer ejection system provides constant spreading control while minimizing carryback. A spill guard on the ejector helps retain material and keep it from spilling onto the rear of the scraper.

Designed to reduce service time
The Electronic Monitoring System, EMS III, monitors machine status and provides real-time information to the operator. The system warns of any problems detected by the electronic control modules governing all major systems.

The Caterpillar Electronic Technician service tool easily accesses real-time and stored information through EMS III. The design allows a service technician to diagnose a problem quickly and easily.

Caterpillar has made a number of small changes to the scrapers to improve reliability, durability, and access for service. For example, the implement valve has been relocated from the tractor to the top of the draft tube on the scraper. The change eliminates several hoses and tubes that crossed over the hitch. The result is fewer hydraulic components and connections and improved access.

The G-series scrapers also feature grouped maintenance and service points for simplified routine maintenance. Fluid filters are all spin-on style with the exception of the main hydraulic filter. Spin-on filters decrease maintenance time and reduce the chances of system contamination.

Auger, elevator and push-pull arrangements
Each of the new scrapers is available with an auger system in the bowl, which gives the machine a self-loading capability in material that ranges from free flowing to rock. The auger lifts material off of the cutting edge, conditions it and spreads it evenly in the bowl. In addition, the auger minimizes the production of dust while loading material.

The 623G with an elevator is ideal for windrowing, blending material as well as breaking up vegetation in stripping operations. The elevator lifts material off of the cutting edge, carries it to the top of the elevator, and then dumps the material into the bowl. The operator has variable control of the elevator to match the speed of the elevator to the material conditions for increased productivity. In addition, the elevator reverses for spreading topsoil and unloading cohesive material. The single-pivot elevator design improves the load profile, which allows the machine to achieve consistent payloads.

The 627G, 637G and 657G are available in a push-pull configuration designed for two machines to assist each other when loading. The push-pull arrangement features a hydraulically actuated bail and cushioned plate bolted to the front of the tractor and a hook attached to the rear of the scraper. This arrangement allows a pair of machines to link together when loading. Typically, push-pull scrapers achieve high production and low cost per meter.

http://www.constructionnewsportal.com/construction_article.asp?ArticleID=62

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