637G

Heavy Equipment

637G

Scraper Capacity - Heaped
34 yd³ / 26 m³
Top Speed - Loaded
33 mile/h / 54.9 km/h
Rated Load
82200 lb / 37285 kg

Responsible, productive earthmoving machines, built to last.

Engine
Tractor Engine Cat C18 ACERT™
Scraper Engine Cat C9 ACERT™
Tractor Engine
Flywheel Power - Tractor/Scraper 373 kW (500 hp) / 211 kW (283 hp)
Net Power 345 kW (462 hp) / 373 kW (500 hp)
Gross Power - Gears 1-2 488 HP / 364 kW
Gross Power - Gears 3-8 526 HP / 392 kW
Net Power - Gears 1-2 462 HP / 345 kW
Net Power - Gears 3-8 500 HP / 373 kW
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Displacement 1105 in³ / 18.1 l
Scraper Engine
Net Power 198 kW (266 hp) / 211 kW (283 hp)
Gross Power - Gear 1 286 HP / 213 kW
Gross Power - Gears 2-4 303 HP / 226 kW
Net Power - Gear 1 266 HP / 198 kW
Net Power - Gears 2-4 283 HP / 211 kW
Bore 4.4 in / 112 mm
Stroke 5.9 in / 149 mm
Displacement 538 in³ / 8.8 l
Scraper Bowl
Scraper Capacity - Heaped 34 yd³ / 26 m³
Rated Load 82200 lb / 37285 kg
Capacity - Struck 24 yd³ / 18.3 m³
Depth of Cut - Maximum 17.2 in / 437 mm
Width - Cut - To Router Bits 138.3 in / 3512 mm
Ground Clearance - Maximum 21.5 in / 545 mm
Cutting Edge Thickness 1.12 in / 28 mm
Hyd. Penetration Force - 637G 81000 lb / 360 kN
Depth of Spread - Maximum 18.9 in / 480 mm
Apron Opening 79 in / 2007 mm
Apron Closure Force 38250 lb / 170 kN
Transmission
Top Speed - Loaded 33 mile/h / 54.9 km/h
1 Forward 3.4 mile/h / 5.5 km/h
2 Forward 6.2 mile/h / 10 km/h
3 Forward 7.6 mile/h / 12.2 km/h
4 Forward 10.3 mile/h / 16.6 km/h
5 Forward 13.8 mile/h / 22.2 km/h
6 Forward 18.7 mile/h / 30.1 km/h
7 Forward 25.2 mile/h / 40.6 km/h
8 Forward 34.1 mile/h / 54.9 km/h
Reverse 6.2 mile/h / 9.9 km/h
Hydraulics
Bowl Cylinder Bore 7.2 in / 184 mm
Bowl Cylinder Stroke 34.4 in / 873 mm
Apron Cylinder Bore 8.2 in / 210 mm
Apron Cylinder Stroke 28.6 in / 727 mm
Ejector Cylinder Bore 8.2 in / 210 mm
Ejector Cylinder Stroke 74 in / 1880 mm
Steering Circuit 100 gal/min / 379 l/min
Scraper Circuit 91 gal/min / 344 l/min
Cushion Hitch Circuit 9 gal/min / 34.5 l/min
Secondary Steering Circuit 100 gal/min / 379 l/min
Relief Valve - Steering Circuit 1987 psi / 13700 kPa
Relief Valve - Implement Circuit 2030 psi / 14000 kPa
Compensator Settings - Cushion Hitch Circuit 2320 psi / 16000 kPa
Steering
Width - 180° Turn 40.02 ft / 12.2 m
Width - 180° Turn - Right 40.1 ft / 12.2 m
Steering Angle - Right 90°
Steering Angle - Left 85°
Hydraulic Output 100 gal/min / 379 l/min
Service Refill Capacities - Tractor
Cooling System 29 gal (US) / 110 l
Crankcase 11.9 gal (US) / 45 l
Differential 39 gal (US) / 148 l
Final Drive - Each 6.1 gal (US) / 23 l
Fuel Tank - 637G 335 gal (US) / 1268 l
Hydraulic Reservoir 50.2 gal (US) / 190 l
Transmission 29 gal (US) / 110 l
Wheel Coolant - Each 19.8 gal (US) / 75 l
Windshield Washer 1.5 gal (US) / 6 l
Service Refill Capacities - Scraper
Cooling System 20 gal (US) / 76 l
Crankcase 7.9 gal (US) / 30 l
Differential 3.2 gal (US) / 12 l
Final Drive - Each 5 gal (US) / 19 l
Fuel Tank - 637G 335 gal (US) / 1268 l
Transmission 19 gal (US) / 72 l
Wheel Coolant - Each 19.8 gal (US) / 75 l
Dimensions
Width - Overall Machine 155 in / 3938 mm
Width - Tractor 137 in / 3481 mm
Width - Rear Tire Center Lines 97 in / 2464 mm
Width - Inside of Bowl 134 in / 3405 mm
Width - Outside Rear Tires 143.2 in / 3636 mm
Width - Outside Bowl - Shipping Width 154 in / 3914 mm
Height - Overall Shipping 168.8 in / 4286 mm
Height - Top of Cab 146.3 in / 3715 mm
Ground Clearance - Tractor 26.2 in / 665 mm
Front of Tractor to Front Axle 132.2 in / 3359 mm
Axle to Vertical Hitch Pin 21.6 in / 548 mm
Height - Scraper Blade Maximum 21.5 in / 545 mm
Wheel Base 345.2 in / 8769 mm
Length - Overall Machine 573.4 in / 14565 mm
Rear Axle - Rear of Machine 95.97 in / 2437 mm
Bail Length - Maximum (Push-Pull) 195.3 in / 4960 mm
Extended Push Block (Push-Pull) 108 in / 2744 mm
Weights - Standard, Tandem
Front Axle 67700 lb / 30708 kg
Front Axle Weight - Loaded 96503 lb / 43773 kg
Rear Axle 47044 lb / 21339 kg
Rear Axle - Weight - Loaded 100441 lb / 45559 kg
Scraper Shipping 46231 lb / 20970 kg
Total Operating - Empty 114744 lb / 52047 kg
Total Operating - Loaded 196944 lb / 89332 kg
Total Shipping 112760 lb / 51147 kg
Tractor Shipping 66529 lb / 30177 kg
Weights - Push-Pull
Total Shipping 116100 lb / 52662 kg
Tractor Shipping 68499 lb / 31071 kg
Scraper Shipping 47601 lb / 21591 kg
Total Operating - Empty 118084 lb / 53562 kg
Front Axle 69670 lb / 31602 kg
Rear Axle 48414 lb / 21960 kg
Total Operating - Loaded 200284 lb / 90874 kg
Front Axle - Loaded 98139 lb / 44515 kg
Rear Axle - Loaded 102145 lb / 46332 kg
Transmission - 637G
1 Forward 3.4 mile/h / 5.5 km/h
2 Forward 6.2 mile/h / 10 km/h
3 Forward 7.6 mile/h / 12.2 km/h
4 Forward 10.3 mile/h / 16.6 km/h
5 Forward 13.8 mile/h / 22.2 km/h
6 Forward 18.7 mile/h / 30.1 km/h
7 Forward 25.2 mile/h / 40.6 km/h
8 Forward 34.1 mile/h / 54.9 km/h
Reverse 6.2 mile/h / 9.9 km/h

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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