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Cat Wheel Tractor-Scrapers 637G

Cat Wheel Tractor-Scrapers 637G

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Coal Bowl Scraper Benefits

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Dual Engines

Dual Engines allow Coal Bowl Scrapers to achieve maximum payloads and deliver fast cycle times.

All-Wheel-Drive

All-Wheel-Drive allows the machine to work effectively in poor underfoot conditions and climb piles of slippery, loose coal.

Large Capacity Coal Bowls

Coal Bowls are longer and higher than standard scraper bowls, which allows you to haul 50 cubic yards (38 cubic meters) with a 637G.

Compaction Capability

Coal bowl scrapers are effective in compacting coal, which reduces the risk of spontaneous combustion of coal in the stockpile by eliminating the air spaces.

Coal Stockpile Management

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Maintaining the Coal Stockpile

Coal Bowl Scrapers are effective in compacting coal, which reduces the possibility of spontaneous combustion in the coal stockpile. This allows your company to meet plant safety regulations and eliminates the need for additional compaction equipment.

Reclaiming Coal from the Stockpile

When incoming coal shipments cannot satisfy your coal burn requirements, you need a way to reclaim the coal off the stockpile. Coal Bowl Scrapers can move coal from the stockpile to the inlet supply of the plant.

Building the Coal Stockpile

Coal Bowl Scrapers allow you to create your coal stockpile by self-loading coal in the receiving area, hauling it to the stockpile area, and dumping coal in thin lifts.

Customer Service

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Dependable Partnership

There's no question, Cat Wheel Tractor-Scrapers stand for reliability and high productivity. Most important, you have a partner, the renowned Cat dealer network, to provide you with unmatched service that minimizes your downtime.

Purchase

With both great rates and great service, Cat Financial will assist you in financing your next Wheel Tractor-Scraper.

Operation

Improving operating techniques can boost your profits. Your Cat dealer has training videotapes, literature and other ideas to help you increase productivity.

Maintenance

More and more equipment buyers are planning for effective maintenance before buying equipment.

Product Support

You will find nearly all parts at our dealer parts counter.

Replacement

Repair, rebuild or replace?  Your Cat dealer can help you evaluate the costs involved so you can make the right choice.

Power Train

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Engine

Proven Cat engines provide the power and torque rise for excellent lugging in tough loading conditions.

Fuel System

The fuel system and Electronic Control Module on the C18 tractor engine economically and precisely deliver fuel.

Injection Pressures

High injection pressures, independent of engine speed, decrease smoke and emissions while improving response.

Variable Injection Timing

Variable injection timing and duration improve fuel efficiency and cold starting, decrease smoke and emissions.

Injection Rate Shaping

Injection rate shaping reduces emission and engine noise.

Mechanical Parts

Fewer mechanical parts in the fuel system improves reliability.

Electronic Control

Electronic control provides automatic altitude deration and automatic air filter restriction deration.

Multiple Horsepower Ratings

Multiple horsepower ratings limit output in first and second gears unless the operator has the auger or elevator engaged.

Neutral Start Control

Neutral start control prevents engine from starting unless transmission is in neutral.

Throttle Back-up

Throttle back-up provides the operator with a preset engine speed control in the event of a throttle input failure.

Throttle Lock

The throttle lock allows the operator the capability of locking both engines at any operating level.

Directional Shift Management

Directional shift management prevents the operator from shifting out of neutral when engine rpm is above a preset level.

Controlled Throttle Shifting

Controlled throttle shifting increases drivetrain life by reducing the fuel injection rate just prior to shifting.

Automatic Ether Starting Aid

Automatic ether starting aid greatly improves cold weather starting.

Electronic Ground Level Shutoff

Electronic ground level shutoff enables the operator to stop the engine from the ground with the flip of a switch.

Steel Spacer Plate

Steel spacer plate between the block and head eliminates the need for counterbores and helps prevent associated cracking problems.

Oil-Cooled Pistons

Oil-cooled pistons and full-length water-cooled cylinder liners provide maximum heat transfer for longer component life.

Aftercooler

The aftercooler lowers intake charge air temperature to increase power and reduce thermal stresses that can cause premature wear of pistons, rings, and liners.

Engine Oil Cooler

Engine oil cooler maintains optimum oil temperature for proper cooling and longer lubricant life.

Laminated Thermo-Shield

Laminated thermal-shield improves tractor protection by reducing the temperature of exposed engine surfaces, cools engine and operating compartments, extends hose and wiring life.

Direct Injection Fuel System

Direct injection fuel system is adjustment-free with individual injection pumps and valves.

Optional Hydraulic Retarder

An optional hydraulic retarder can extend brake life.

Transmission

Eight-speed power shift transmission provides automatic, on-the-go shifting for simple, reliable operation.

Neutral Coast Inhibitor Control

Neutral coast inhibitor control helps prevent the transmission from shifting to neutral at speeds above 8.1 km/h (5 mph).

Top Gear Control

Top gear control helps prevent shifting above a programmed gear to better regulate haul road speeds.

Electronic Programmable Transmission Control (EPTC II)

Electronic Programmable Transmission Control (EPTC II) records both current and intermittent faults.

Electronically Controlled Cushion Hitch

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Design

The Caterpillar electronically controlled cushion hitch design dampens shocks to provide a smoother ride.

Nitrogen Accumulators

Nitrogen-over-oil accumulators absorb and dampen road shocks.

Cushion Hitch Lock

Electronically controlled cushion hitch locks down for positive control of the cutting edge during loading and dumping.

Double Kingbolt Design

Double kingbolt design withstands high external forces and allows easy installation and removal.

Hitch Castings

Extensive use of steel castings eliminates many welded joints, making a strong hitch.

Scraper Bowl

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Bowl

Caterpillar Coal Scraper bowls come from the factory especially built for coal handling.

Auger Mechanism

An auger mechanism in the bowl improves self-loading capabilities by lifting material off of the cutting edge and carrying it to the top of the load.

Tandem Power

A coal-handling scraper has to keep working around the clock, in all kinds of weather and conditions.

Operator's Station

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Cab

Standard rubber-mounted cab reduces noise and vibration for comfortable, shift-long operation.

Controls

Low-effort controls are easily accessible for sure, precise operation.

Steering

Hydraulic servo-steering system provides low-effort automotive feel and excellent maneuverability.

Steering Column

Tilt steering column adjusts to five different positions for operator comfort and control.

Seat

A suspension seat delivers a comfortable ride.

Electronic Monitoring System

The Electronic Monitoring System checks important machine systems and provides a three-level warning.

Radio

The operator's station includes radio compatible wires in the cab.

Serviceability

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Fuel Tank

Scraper-mounted fuel tank improves access to tractor engine compartment.

Wiring Harness

Improved wiring harness incorporates color coded and numbered circuits for quick identification, minimum 10-amp fuses and improved connectors.

Diagnostic Connector

Diagnostic connector, with the aid of a service tool, allows quick analysis of the starting and charging circuits.

O-Ring Face Seals

O-ring face seals help keep these machines 'dry'.

Centralized Lubrication Blocks

Centralized lubrication blocks for the hitch and steering reduce lube time.

Service Points

Service points for the engine are grouped on the right side for easy access.

Service Platforms

Service platforms and numerous handholds improve access and safety.

Parts Availability

Increased component commonality with other Caterpillar scrapers/machines improves parts availability.

Engine Shut-offs

Electronic ground-level engine shut-offs for convenient operator and services areas.

Radiator

Folded core radiator allows individual cores to be replaced as modules, reducing service time and expense.

Reliability

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Optional Retarder

The optional retarder extends brake life when working on severe, downhill slopes.

Bumpers

Rounded off bumpers reduce hooking into high walls.

Castings

Extensive use of castings in the frame, hitch and bowl provide long service life.

Wiring Harness and Hose Assemblies

Wiring harness and hose assemblies run down the draft arms to eliminate the need for "jump-over" line which can reduce hydraulic system efficiency.

Tires

Standard tires provide the maximum flotation of the available options.

Scraper Driveline Guard

Scraper driveline guard protects the output case, differential and ejector cylinder to help minimize driveline maintenance costs.

Laminated Thermo-Shield

Laminated Thermo-Shield helps keep surface temperatures in the engine compartment below the flash point of diesel fuel.

Complete Customer Support

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Caterpillar Dealer

Your Caterpillar Dealer offers a wide range of services that can be set up under a customer support agreement when you purchase your equipment.

Selection

Make detailed comparisons of the machines you are considering before you buy.

Purchase

Look past the initial price.  Consider the financing options available as well as day-to-day operating costs.


Overview

Coal reserve management Only Caterpillar offers Wheel Tractor-Scrapers designed exclusively for your coal stockpiling and retrieval needs. The Cat® 637G Coal Bowl Scraper can construct and maintain your coal stockpiles, as well as haul loads to your inlet supply system to meet the burn requirements of the plant.

Engine

Units:

Flywheel Power - Tractor/Scraper373 kw (500 hp) / 211 kW (283 hp) 373 kw (500 hp) / 211 kW (283 hp)Less
Flywheel Power - Tractor345 / 373 kW (462 / 500 hp) 345 / 373 kW (462 / 500 hp)Less
Flywheel Power - Scraper198 / 211 kW (266 / 283 hp) 198 / 211 kW (266 / 283 hp)Less
Tractor EngineCat® C18 with ACERT Technology Cat® C18 with ACERT TechnologyLess
Scraper EngineCat C9 with ACERT Technology Cat C9 with ACERT TechnologyLess

Operating Specifications

Scraper Capacity - Heaped50.0 yd³ 38.0 m³Less
Top Speed - Loaded33.0 mile/h 53.0 km/hLess
Rated Load76000.0 lb 34473.0 kgLess
Scraper Capacity - Struck41.0 yd³ 31.0 m³Less
180° Curb-to-Curb Turning Width44.95 ft 13.7 mLess

Weights

Operating Weight - Loaded - Approximate194909.0 lb 88409.0 kgLess
Operating Weight - Empty - Approximate118909.0 lb 54050.0 kgLess

Dimensions

Height - Top of Scraper13.71 ft 4.18 mLess
Wheel Base31.27 ft 9.53 mLess
Length - Overall50.75 ft 15.47 mLess
Width - Overall12.93 ft 3.94 mLess
Tread - Scraper8.07 ft 2.46 mLess
Tread - Tractor8.07 ft 2.46 mLess


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