637

637

637 Wheel Tractor-Scraper

Cat’s 637 Wheel Tractor-Scraper is engineered to conquer challenges operators face worldwide. With its strength and durability, it works in some of the most difficult conditions and materials one can find.

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Standard Equipment

NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
POWER TRAIN – TRACTOR
  • Cat C18 engine with MEUI™
  • Compression engine brake
  • Electric start, 24V
  • Air cleaner, dry type with precleaner
  • Fan, hydraulic
  • Ground level engine shutdown
  • Radiator, aluminum unit core, 9 fins per inch
  • Guard, crankcase
  • Starting aid, ether
  • Braking system:
    • Primary and secondary, wet disc, hydraulic actuated
    • Parking, hydraulic-released, spring-applied
  • Throttle lock
  • Transmission:
    • 8-speed planetary power shift
    • ECPC control
    • APECS software
    • Programmable top gear selection
    • Transmission hold
    • Differential lock
    • Guard, power train
    • Standard tire spin reduction
    • Ground speed control
    • Machine speed limit
    • Differential lock protection
POWER TRAIN – SCRAPER
  • Cat C9.3 engine:
    • High pressure common rail fuel
    • Constant lift engine brake
  • Electric start, 24V
  • Air cleaner, dry type with precleaner
  • Fan, mechanical driven
  • Ground level engine shutdown
  • Radiator, aluminum unit core, 9 fins per inch
  • Starting aid, either
  • Braking system:
    • Primary and secondary, dry caliper, hydraulic actuated
  • Transmission:
    • 4-speed (torque converter drive)
    • Planetary power shift
ELECTRICAL – TRACTOR
  • Alternator, 150 Amp
  • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
  • Electrical system, 24V
  • Lighting system:
    • Headlights, LED
    • Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
  • Starting/charging receptacle
ELECTRICAL – SCRAPER
  • Alarm, backup
  • Batteries (4) 12V, 1,000 CCA, maintenance free, high output
  • Alternator, 65 Amp
  • Electrical system, 24V
  • Lighting system:
    • Brake lights, LED
    • Turn signals with hazard function, LED
OPERATOR ENVIRONMENT – TRACTOR
  • HVAC system, heat, AC, defrost
  • Thermostat control of HVAC system
  • Coat hook
  • Lunchbox platform with holding strap
  • Diagnostic connection (2)
  • 12V power ports (2)
  • Differential lock (1)
  • Dome courtesy light
  • Horn, electric
  • T-Handle implement control
  • Mirror, rearview
  • Radio ready
  • ROPS/FOPS cab, pressurized
  • Keypad switches:
    • Throttle lock
    • Wipers/washers
    • Hazard lights
    • Retarding level select
    • Work lights on, off
    • Information mode on Messenger Display
  • Safety tab rocker switches
  • Seat belt, static two-piece
  • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
  • Steering wheel, tilt, telescoping, padded
  • Windows, right side emergency egress
  • Windows, sliding
  • Windows, laminated, zipped in
  • Windshield wipers, front and rear windows, includes washers
  • Door lock
  • Messenger Display
  • Gauges, warnings include:
    • Coolant temperature
    • Engine oil temperature
    • Hydraulic oil temperature
    • Fuel level
    • Park brake
    • Implement lockout
    • Brake system
    • Throttle lock
    • System voltage
    • Secondary steering
    • Bail down
    • Ejector auto
    • Differential lock
    • Apron float
    • Transmission hold
    • Cushion hitch
    • High beam lights
    • Action lamp
    • Engine speed, rpm
    • Gear selection
FLUIDS
  • Extended Life Coolant to –37° C (–34° F)
OTHER STANDARD EQUIPMENT – TRACTOR
  • Advanced cushion hitch
  • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
  • Fast oil change
  • Fenders, non-metallic
  • Heater, engine coolant 120V
  • Rims (2)
  • Tow hooks, front
  • Vandalism locks
  • Heater, engine coolant 120V
  • Steering locks
OTHER STANDARD EQUIPMENT – SCRAPER
  • Bowl:
    • 18.3 m3 (24 yd3), struck
    • 26 m3 (34 yd3), heaped
  • Vandalism locks
  • Scraper fenders
  • Overflow guard
  • Fast oil change
  • Rims (2)
  • Hydraulic position sensing cylinders (bowl lift and apron)

Additional Information

General - Top Speed - Loaded

55.8 km/h ( 34.7 mile/h )
General - 180° Curb-to-Curb Turning Width

12.23 m ( 40.12 ft )
General - Scraper Capacity - Heaped

26 m³ ( 34 yd³ )
General - Overall Width

3.94 m ( 12.93 ft )
General - Maximum Depth of Spread

535 mm ( 21.1 in )
General - Maximum Depth of Cut

450 mm ( 17.7 in )
General - Width - Cut

3.51 m ( 11.50 ft )
General - Tires - Tractor

37.25R35**E3
General - Tires - Scraper

37.25R35**E3
General - Overall Shipping Height

4.15 m ( 13.62 ft )
General - Fuel Tank Refill Capacity - Scraper

1400 l ( 370 gal (US) )
General - Scraper Capacity - Struck

18.3 m³ ( 24 yd³ )
General - Rated Load

37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Engine - Emissions

Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Engine - Flywheel Power - Tractor

425 kW ( 570 hp )
Rated Engine RPM - Tractor

1900 r/min ( 1900 r/min )
Engine Model - Scraper

Cat C9.3 ACERT
Rated Engine RPM - Scraper

2150 r/min ( 2150 r/min )
Engine - Flywheel Power - Scraper

216 kW ( 290 hp )
Engine Model - Tractor

Cat C18
Tractor Engine - Flywheel Power - Tractor/Scraper

425 kW ( 570 hp )
Scraper Bowl - Scraper Capacity - Heaped

26 m³ ( 34 yd³ )
Transmission - Top Speed - Loaded

55.8 km/h ( 34.7 mile/h )
Service Refill Capacities - Crankcase - Scraper

24.5 l ( 6.5 gal (US) )
Service Refill Capacities - Transmission System - Scraper

49 l ( 12.9 gal (US) )
Service Refill Capacities - Crankcase - Tractor

52 l ( 13.7 gal (US) )
Service Refill Capacities - Transmission System - Tractor

110 l ( 29 gal (US) )
Service Refill Capacities - Hydraulic System

142 l ( 37.5 gal (US) )
Service Refill Capacities - Cooling System - Tractor

75 l ( 19.8 gal (US) )
Service Refill Capacities - Fuel Tank

1400 l ( 370 gal (US) )
Service Refill Capacities - Cooling System - Scraper

61 l ( 16.1 gal (US) )
Dimensions - Front of Tractor to Front Axle

3612 mm ( 142.2 in )
Dimensions - Axle to Vertical Hitch Pin

509 mm ( 20 in )
Dimensions - Wheel Base

8808 mm ( 346.8 in )
Dimensions - Rear Axle - Rear of Machine

2292 mm ( 90.2 in )
Dimensions - Width - Rear Tire Centers

2462 mm ( 96.9 in )
Dimensions - Width - Inside of Bowl

3404 mm ( 134 in )
Dimensions - Height - Scraper Blade Maximum

510 mm ( 20 in )
Dimensions - Extended Push Block (Push-Pull)

2744 mm ( 108 in )
Dimensions - Width - Outside Rear Tires

3636 mm ( 143.2 in )
Dimensions - Length - Maximum (Push-Pull)

16640 mm ( 655.1 in )
Dimensions - Width - Overall Machine

3937 mm ( 155 in )
Dimensions - Width - Tractor

3499 mm ( 137.8 in )
Dimensions - Length - Overall Machine - Standard

15164 mm ( 597 in )
Dimensions - Height - Top of Cab

3733 mm ( 147 in )
Dimensions - Ground Clearance - Tractor

664 mm ( 26.1 in )
Dimensions - Height - Overall Shipping

4145 mm ( 163.2 in )
Non Push-Pull - Overall Length

15.04 m ( 49.34 ft )
Non Push-Pull - Operating Weight - Empty

52140 kg ( 114950 lb )
Push-Pull - Operating Weight - Empty

54005 kg ( 119060 lb )
Push-Pull - Overall Length - With Bail Down

16.64 m ( 54.59 ft )
Cab - ROPS/FOPS

ROPS/FOPS meet “ISO Standards.”
Cab - Exterior Sound Level

The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
Safety Criteria Compliance Standards - Rollover Protection Structure (ROPS)

ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Safety Criteria Compliance Standards - Falling Object Protective Structure (FOPS)

ISO 3449:2005 Level II
Safety Criteria Compliance Standards - Brakes

ISO 3450:2011
Safety Criteria Compliance Standards - Reverse Alarm

ISO 9533:2010
Safety Criteria Compliance Standards - Seat Belt

SAE J386:FEB2006
Safety Criteria Compliance Standards - Steering System

ISO 5010:2007
Travel Speeds - Runout - Transmission Gear - Reverse

9.9 km/h ( 6.2 mile/h )
Travel Speeds - Runout - Transmission Gear - Seventh

41.95 km/h ( 25.7 mile/h )
Travel Speeds - Runout - Transmission Gear - First

5.5 km/h ( 3.4 mile/h )
Travel Speeds - Runout - Transmission Gear - Third

12.4 km/h ( 7.7 mile/h )
Travel Speeds - Runout - Transmission Gear - Eighth

55.8 km/h ( 34.7 mile/h )
Travel Speeds - Runout - Transmission Gear - Second

10.0 km/h ( 6.2 mile/h )
Travel Speeds - Runout - Transmission Gear - Fourth

16.9 km/h ( 10.5 mile/h )
Travel Speeds - Runout - Transmission Gear - Fifth

22.7 km/h ( 14.1 mile/h )
Travel Speeds - Runout - Transmission Gear - Sixth

30.6 km/h ( 19.0 mile/h )
Implement Cycle Times - Ejector Retract

8.5 s ( 8.5 s )
Implement Cycle Times - Bowl Lower

3.5 s ( 3.5 s )
Implement Cycle Times - Bail Raise

1.5 s ( 1.5 s )
Implement Cycle Times - Apron Lower

3.8 s ( 3.8 s )
Implement Cycle Times - Bail Lower

2.1 s ( 2.1 s )
Implement Cycle Times - Ejector Extend

8.5 s ( 8.5 s )
Implement Cycle Times - Apron Raise

4.0 s ( 4.0 s )
Implement Cycle Times - Bowl Raise

3.5 s ( 3.5 s )
Offering Type

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