637G Wheel Tractor-Scraper

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637G Wheel Tractor-Scraper

Responsible, productive earthmoving machines, built to last.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.
  • Standard Equipment
  • Specs

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:

Specs

Overview

Long Name:
637G Wheel Tractor Scraper
Name:
637G
Brand:
Caterpillar
Status:
Noncurrent

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