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Overview

Responsible, productive earthmoving machines, built to last.

Engine

Units:
Tractor Engine Cat C18 ACERT™ Cat C18 ACERT™ Less
Scraper Engine Cat C9 ACERT™ Cat C9 ACERT™ Less

Tractor Engine

Flywheel Power: Tractor/Scraper 373 kW (500 hp) / 211 kW (283 hp) 373 kW (500 hp) / 211 kW (283 hp) Less
Net Power 345 kW (462 hp) / 373 kW (500 hp) 345 kW (462 hp) / 373 kW (500 hp) Less
Gross Power - Gears 1-2 488.0 hp 364.0 kW Less
Gross Power - Gears 3-8 526.0 hp 392.0 kW Less
Net Power - Gears 1-2 462.0 hp 345.0 kW Less
Net Power - Gears 3-8 500.0 hp 373.0 kW Less
Bore 5.7 in 145.0 mm Less
Stroke 7.2 in 183.0 mm Less
Displacement 1105.0 in3 18.1 L Less

Scraper Engine

Net Power 198 kW (266 hp) / 211 kW (283 hp) 198 kW (266 hp) / 211 kW (283 hp) Less
Gross Power - Gear 1 286.0 hp 213.0 kW Less
Gross Power - Gears 2-4 303.0 hp 226.0 kW Less
Net Power - Gear 1 266.0 hp 198.0 kW Less
Net Power - Gears 2-4 283.0 hp 211.0 kW Less
Bore 4.4 in 112.0 mm Less
Stroke 5.9 in 149.0 mm Less
Displacement 538.0 in3 8.8 L Less

Scraper Bowl

Scraper Capacity: Heaped 34.0 yd3 26.0 m3 Less
Rated Load 82200.0 lb 37285.0 kg Less
Capacity Struck 24.0 yd3 18.3 m3 Less
Depth of Cut - max. 17.2 in 437.0 mm Less
Width of Cut, to Router Bits 138.3 in 3512.0 mm Less
Ground Clearance - max. 21.5 in 545.0 mm Less
Cutting Edge - thickness 1.12 in. 28.0 mm Less
Hyd. Penetration Force - 637G 81000.0 lb 360.0 kN Less
Depth of Spread - max. 18.9 in 480.0 mm Less
Apron Opening 79.0 in 2007.0 mm Less
Apron Closure Force 38250.0 lb 170.0 kN Less

Transmission

Top Speed (Loaded) 33.0 mph 54.9 km/h Less
1 Forward 3.4 mph 5.5 km/h Less
2 Forward 6.2 mph 10.0 km/h Less
3 Forward 7.6 mph 12.2 km/h Less
4 Forward 10.3 mph 16.6 km/h Less
5 Forward 13.8 mph 22.2 km/h Less
6 Forward 18.7 mph 30.1 km/h Less
7 Forward 25.2 mph 40.6 km/h Less
8 Forward 34.1 mph 54.9 km/h Less
Reverse 6.2 mph 9.9 km/h Less

Hydraulics

Bowl Cylinder Bore 7.2 in 184.0 mm Less
Bowl Cylinder Stroke 34.4 in 873.0 mm Less
Apron Cylinder Bore 8.2 in 210.0 mm Less
Apron Cylinder Stroke 28.6 in 727.0 mm Less
Ejector Cylinder Bore 8.2 in 210.0 mm Less
Ejector Cylinder Stroke 74.0 in 1880.0 mm Less
Steering Circuit 100.0 gal/min 379.0 L/min Less
Scraper Circuit 91.0 gal/min 344.0 L/min Less
Cushion Hitch Circuit 9.0 gal/min 34.5 L/min Less
Secondary Steering Circuit 100.0 gal/min 379.0 L/min Less
Relief Valve - Steering Circuit 1987.0 psi 13700.0 kPa Less
Relief Valve - Implement Circuit 2030.0 psi 14000.0 kPa Less
Compensator Setting - Cushion Hitch Circuit 2320.0 psi 16000.0 kPa Less

Steering

Width - 180° Turn 40.02 ft 12.2 m Less
Width - 180° Turn, right 40.1 ft 12.2 m Less
Steering Angle – Right 90° 90° Less
Steering Angle – Left 85° 85° Less
Hydraulic Output 100.0 gal/min 379.0 L/min Less

Service Refill Capacities – Tractor

Crankcase 11.9 gal 45.0 L Less
Fuel Tank - 637G 335.0 gal 1268.0 L Less
Transmission 29.0 gal 110.0 L Less
Differential 39.0 gal 148.0 L Less
Final Drive (per side) 6.1 gal 23.0 L Less
Cooling System 29.0 gal 110.0 L Less
Hydraulic Reservoir 50.2 gal 190.0 L Less
Wheel Coolant (each) 19.8 gal 75.0 L Less
Windshield Washer 1.5 gal 6.0 L Less

Service Refill Capacities – Scraper

Fuel Tank - 637G 335.0 gal 1268.0 L Less
Crankcase 7.9 gal 30.0 L Less
Transmission 19.0 gal 72.0 L Less
Differential 3.2 gal 12.0 L Less
Final Drive (per side) 5.0 gal 19.0 L Less
Wheel Coolant (each) 19.8 gal 75.0 L Less
Cooling System 20.0 gal 76.0 L Less

Dimensions

Width – Overall Machine 155.0 in 3938.0 mm Less
Width – Tractor 137.0 in 3481.0 mm Less
Width - rear tire center lines 97.0 in 2464.0 mm Less
Width – Inside of Bowl 134.0 in 3405.0 mm Less
Width – Outside Rear Tires 143.2 in 3636.0 mm Less
Width - outside bowl (shipping width) 154.0 in 3914.0 mm Less
Height – Overall Shipping 168.8 in 4286.0 mm Less
Height – Top of Cab 146.3 in 3715.0 mm Less
Ground Clearance – Tractor 26.2 in 665.0 mm Less
Front of Tractor to Front Axle 132.2 in 3359.0 mm Less
Axle to Vertical Hitch Pin 21.6 in 548.0 mm Less
Height – Scraper Blade Maximum 21.5 in 545.0 mm Less
Wheelbase 345.2 in 8769.0 mm Less
Length - overall machine 573.4 in 14565.0 mm Less
Rear Axle to Rear of Machine 95.97 in 2437.0 mm Less
Bail Length - max. (push-pull) 195.3 in 4960.0 mm Less
Extended Push Block (push-pull) 108.0 in 2744.0 mm Less

Weights - Standard, tandem

Total Shipping 112760.0 lb 51147.0 kg Less
Tractor Shipping 66529.0 lb 30177.0 kg Less
Scraper Shipping 46231.0 lb 20970.0 kg Less
Total Operating - empty 114744.0 lb 52047.0 kg Less
Front Axle 67700.0 lb 30708.0 kg Less
Rear Axle 47044.0 lb 21339.0 kg Less
Total Operating - loaded 196944.0 lb 89332.0 kg Less
Front Axle Weight - loaded 96503.0 lb 43773.0 kg Less
Rear Axle Weight - loaded 100441.0 lb 45559.0 kg Less

Weights - Push-Pull

Total Shipping 116100.0 lb 52662.0 kg Less
Tractor Shipping 68499.0 lb 31071.0 kg Less
Scraper Shipping 47601.0 lb 21591.0 kg Less
Total Operating - empty 118084.0 lb 53562.0 kg Less
Front Axle 69670.0 lb 31602.0 kg Less
Rear Axle 48414.0 lb 21960.0 kg Less
Total Operating - loaded 200284.0 lb 90874.0 kg Less
Front Axle - loaded 98139.0 lb 44515.0 kg Less
Rear Axle (Loaded) 102145.0 lb 46332.0 kg Less

Transmission - 637G

1 Forward 3.4 mph 5.5 km/h Less
2 Forward 6.2 mph 10.0 km/h Less
3 Forward 7.6 mph 12.2 km/h Less
4 Forward 10.3 mph 16.6 km/h Less
5 Forward 13.8 mph 22.2 km/h Less
6 Forward 18.7 mph 30.1 km/h Less
7 Forward 25.2 mph 40.6 km/h Less
8 Forward 34.1 mph 54.9 km/h Less
Reverse 6.2 mph 9.9 km/h Less

Power Train - Engine

A combination of innovations working at the point of combustion, ACERT™ technology optimizes engine performance while meeting regulations for off-road applications


Power Train - Transmission

Integrated electronics allow the machine to monitor the entire power train, reducing component stress and providing a better ride.


Structures

Superior structural design and construction optimize performance and reliability.


Operator Station

State-of-the-art productivity and operator comfort.


Electronic Controls

Integrated electronic controls provide smooth, consistent shifts through the synchronization of engine and transmission speeds.


Scraper Bowl

Designed for optimum loading, material retention and ejection.


Push-Pull Arrangement

Caterpillar offers a self-loading arrangement for the 637G.


Auger Arrangement

Excellent self-loading capability in a wide range of material.


Serviceability

Count on Caterpillar for simplified service and the most productive uptime.


Customer Support

Cat dealer services help you operate longer with lower costs.


637G Standard Equipment

ELECTRICAL
  • Alarm, backup
  • Alternator, 75 amp - tractor engine
  • Alternator, 35 amp - scraper engine
  • Batteries (4), 12V Maintenance Free, High Output
  • Batteries (2), 12V Maintenance Free, High Output
  • Electrical System, 24V
  • Lighting System - Tractor
  • Lighting System - Scraper
  • Starting Receptacle - tractor and scraper engines

OPERATOR ENVIRONMENT
  • Air Conditioner (includes heater and defroster)
  • Cigarette Lighter and Ashtray
  • Coat Hook
  • Diagnostic Connection Port (12V)
  • Dome Courtesy Light
  • Gauge Group
  • Horn
  • Implement Control Joystick
  • Rearview Mirrors
  • Radio Ready (two radio openings, speakers, and 5-amp converter)
  • ROPS Cab with Sound Suppression and Pressurization
  • Static Seatbelt
  • Scraper Engine Controls
  • Seat, Air Suspension, Caterpillar Comfort, cloth
  • Steering Wheel - tilt and telescoping
  • Storage Compartment
  • Throttle Lock
  • Transmission Hold
  • Windows - sliding side, swing out
  • Windshield - laminated glass
  • Windshield Wiper/Washer - front and rear

POWER TRAIN
  • Engine
  • Braking System
  • Transmission

OTHER STANDARD EQUIPMENT
  • Extended Life Coolant, -36° C (-33° F)
  • Fan hub, permanent lube
  • Fast Oil Change
  • Fenders
  • Rims - 35 inch (2)
  • Tires, 37.50-R35 radial
  • Tractor:
  • Scraper:

637G Optional Equipment

• Auger

• Crankcase Guard, Heavy Duty

• Extended Life Coolant, -50° C (-58° F)

• Fan, Defrost

• Heater - jacket water (all engines)

• Hydraulic Retarder

• Lights, Side Vision

• Lock, Steering

• Powertrain Guard

• Push Block - extended (scraper)

• Push-Pull Arrangement w/ Rear Radiator Guard

• Retractable seat belts

• Secondary Steering

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
Financing & Insurance

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