New | 637G Wheel Tractor Scraper

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Caterpillar Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

Engine
Tractor EngineCat C18 ACERT™
Scraper EngineCat C9 ACERT™
Tractor Engine
Flywheel Power - Tractor/Scraper373 kW (500 hp) / 211 kW (283 hp)
Net Power345 kW (462 hp) / 373 kW (500 hp)
Gross Power - Gears 1-2488 mm H2O
Gross Power - Gears 3-8526 mm H2O
Net Power - Gears 1-2462 mm H2O
Net Power - Gears 3-8500 mm H2O
Bore5.7 in
Stroke7.2 in
Displacement1105 in³
Scraper Engine
Net Power198 kW (266 hp) / 211 kW (283 hp)
Gross Power - Gear 1286 mm H2O
Gross Power - Gears 2-4303 mm H2O
Net Power - Gear 1266 mm H2O
Net Power - Gears 2-4283 mm H2O
Bore4.4 in
Stroke5.9 in
Displacement538 in³
Scraper Bowl
Scraper Capacity - Heaped34 yd³
Rated Load82200 lb
Capacity - Struck24 yd³
Depth of Cut - Maximum17.2 in
Width - Cut - To Router Bits138.3 in
Ground Clearance - Maximum21.5 in
Cutting Edge Thickness1.12 in
Hyd. Penetration Force - 637G81000 lb
Depth of Spread - Maximum18.9 in
Apron Opening79 in
Apron Closure Force38250 lb
Transmission
Top Speed - Loaded33 mile/h
1 Forward3.4 mile/h
2 Forward6.2 mile/h
3 Forward7.6 mile/h
4 Forward10.3 mile/h
5 Forward13.8 mile/h
6 Forward18.7 mile/h
7 Forward25.2 mile/h
8 Forward34.1 mile/h
Reverse6.2 mile/h
Hydraulics
Bowl Cylinder Bore7.2 in
Bowl Cylinder Stroke34.4 in
Apron Cylinder Bore8.2 in
Apron Cylinder Stroke28.6 in
Ejector Cylinder Bore8.2 in
Ejector Cylinder Stroke74 in
Steering Circuit100 gal/min
Scraper Circuit91 gal/min
Cushion Hitch Circuit9 gal/min
Secondary Steering Circuit100 gal/min
Relief Valve - Steering Circuit1987 psi
Relief Valve - Implement Circuit2030 psi
Compensator Settings - Cushion Hitch Circuit2320 psi
Steering
Width - 180° Turn40.02 ft
Width - 180° Turn - Right40.1 ft
Steering Angle - Right90°
Steering Angle - Left85°
Hydraulic Output100 gal/min
Service Refill Capacities - Tractor
Cooling System29 gal (US)
Crankcase11.9 gal (US)
Differential39 gal (US)
Final Drive - Each6.1 gal (US)
Fuel Tank - 637G335 gal (US)
Hydraulic Reservoir50.2 gal (US)
Transmission29 gal (US)
Wheel Coolant - Each19.8 gal (US)
Windshield Washer1.5 gal (US)
Service Refill Capacities - Scraper
Cooling System20 gal (US)
Crankcase7.9 gal (US)
Differential3.2 gal (US)
Final Drive - Each5 gal (US)
Fuel Tank - 637G335 gal (US)
Transmission19 gal (US)
Wheel Coolant - Each19.8 gal (US)
Dimensions
Width - Overall Machine155 in
Width - Tractor137 in
Width - Rear Tire Center Lines97 in
Width - Inside of Bowl134 in
Width - Outside Rear Tires143.2 in
Width - Outside Bowl - Shipping Width154 in
Height - Overall Shipping168.8 in
Height - Top of Cab146.3 in
Ground Clearance - Tractor26.2 in
Front of Tractor to Front Axle132.2 in
Axle to Vertical Hitch Pin21.6 in
Height - Scraper Blade Maximum21.5 in
Wheel Base345.2 in
Length - Overall Machine573.4 in
Rear Axle - Rear of Machine95.97 in
Bail Length - Maximum (Push-Pull)195.3 in
Extended Push Block (Push-Pull)108 in
Weights - Standard, Tandem
Front Axle67700 lb
Front Axle Weight - Loaded96503 lb
Rear Axle47044 lb
Rear Axle - Weight - Loaded100441 lb
Scraper Shipping46231 lb
Total Operating - Empty114744 lb
Total Operating - Loaded196944 lb
Total Shipping112760 lb
Tractor Shipping66529 lb
Weights - Push-Pull
Total Shipping116100 lb
Tractor Shipping68499 lb
Scraper Shipping47601 lb
Total Operating - Empty118084 lb
Front Axle69670 lb
Rear Axle48414 lb
Total Operating - Loaded200284 lb
Front Axle - Loaded98139 lb
Rear Axle - Loaded102145 lb
Transmission - 637G
1 Forward3.4 mile/h
2 Forward6.2 mile/h
3 Forward7.6 mile/h
4 Forward10.3 mile/h
5 Forward13.8 mile/h
6 Forward18.7 mile/h
7 Forward25.2 mile/h
8 Forward34.1 mile/h
Reverse6.2 mile/h
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Engine
  • Power Train - Transmission
  • Power Train - Transmission
  • Power Train - Transmission
  • Power Train - Transmission
  • Structures
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Operator Station
  • Electronic Controls
  • Electronic Controls
  • Electronic Controls
  • Electronic Controls
  • Electronic Controls
  • Scraper Bowl
  • Scraper Bowl
  • Scraper Bowl
  • Scraper Bowl
  • Scraper Bowl
  • Scraper Bowl
  • Push-pull Arrangement
  • Push-pull Arrangement
  • Push-pull Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Auger Arrangement
  • Serviceability
  • Customer Support
  • Customer Support
  • Customer Support
  • Customer Support
  • Customer Support
  • Customer Support
  • Customer Support

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:

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