637

637

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.

Flywheel Power - Tractor/Scraper 425 kW
Scraper Capacity - Heaped 26 m³
Top Speed - Loaded 55.8 km/h

Technicial Specifications

Tractor Engine
Flywheel Power - Tractor/Scraper 425 kW
Scraper Bowl
Scraper Capacity - Heaped 26 m³
Transmission
Top Speed - Loaded 55.8 km/h
Engine
Emissions Cat® C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Engine Model - Tractor Cat® C18
Rated Engine RPM - Tractor 1900 r/min
Flywheel Power - Tractor 425 kW
Engine Model - Scraper Cat® C9.3 ACERT
Rated Engine RPM - Scraper 2150 r/min
Flywheel Power - Scraper 215 kW
Travel Speeds - Runout
Transmission Gear - First 5.5 km/h
Transmission Gear - Second 10 km/h
Transmission Gear - Third 12.4 km/h
Transmission Gear - Fourth 16.9 km/h
Transmission Gear - Fifth 22.7 km/h
Transmission Gear - Sixth 30.6 km/h
Transmission Gear - Seventh 41.95 km/h
Transmission Gear - Eighth 55.8 km/h
Transmission Gear - Reverse 9.9 km/h
General
Overall Width 3.94 m
Overall Shipping Height 4.15 m
Scraper Capacity - Struck 18.3 m³
Scraper Capacity - Heaped 26 m³
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Width - Cut 3.51 m
Maximum Depth of Cut 450 mm
Top Speed - Loaded 55.8 km/h
Maximum Depth of Spread 535 mm
180° Curb-to-Curb Turning Width 12.23 m
Tires - Tractor 37.25R35**E3
Tires - Scraper 37.25R35**E3
Fuel Tank Refill Capacity - Scraper 1400 l
Service Refill Capacities
Real Wheels (Each) 9 l
Crankcase - Tractor 52 l
Transmission System - Tractor 110 l
Cooling System - Tractor 71 l
Cooling System - Scraper 41 l
Hydraulic System 142 l
Crankcase - Scraper 24.5 l
Diesel Exhaust Fluid (DEF)* 30.5 l
Diesel Exhaust Fluid (DEF) 22 l
Transmission System - Scraper 49 l
Fuel Tank 1400 l
Dimensions
Width - Overall Machine 3937 mm
Width - Overall Machine - Ladder Down 3878 mm
Width - Tractor 3499 mm
Width - Rear Tire Centers 2462 mm
Width - Inside of Bowl 3404 mm
Width - Outside Bowl - Shipping Width 3635 mm
Height - Overall Shipping 4145 mm
Height - Top of Cab 3805 mm
Front of Tractor to Front Axle 3612 mm
Ground Clearance - Tractor 664 mm
Axle to Vertical Hitch Pin 509 mm
Height - Scraper Blade Maximum 510 mm
Wheel Base 8808 mm
Length - Overall Machine - Standard 15164 mm
Length - Maximum (Push-Pull) 16640 mm
Rear Axle - Rear of Machine 2292 mm
Extended Push Block (Push-Pull) 2744 mm
Width - Outside Rear Tires 3636 mm
Non Push-Pull
Overall Length 15.04 m
Operating Weight - Empty 52140 kg
Push-Pull
Operating Weight - Empty 54005 kg
Overall Length - With Bail Down 16.64 m
Cab
ROPS/FOPS ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 119 dB(A).
Safety Criteria Compliance Standards
Seat Belt SAE J386:FEB2006
Brakes ISO 3450:2011
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Steering System ISO 5010:2007
Reverse Alarm ISO 9533:2010
Implement Cycle Times
Bowl Raise 3.5 s
Bowl Lower 3.5 s
Apron Raise 4 s
Apron Lower 3.8 s
Ejector Extend 8.5 s
Ejector Retract 8.5 s
Bail Raise 1.5 s
Bail Lower 2.1 s
Service Refill Capacities - Tractor
Fuel Tank 370 gal (US)

Advantages and Features

Be More Productive

        
  • The advanced productivity electronic control system (APECS) allows the engine and transmission to communicate on a high level. This communication allows the machine to better utilize the power and torque the engine is producing. The net result is moving more material.
    •     
  • Use ground speed control to set the desired top speed, and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn.
    •     
  • The machine speed limit feature replaces top gear selection, allowing the machine to find the correct gear that works best for the engine and transmission. Pulling the load in the correct gear, in most cases, results in a lower engine load factor and lower fuel burn.
    •     
  • Auto-stall assists in quickly bringing the transmission to an operating temperature at startup when the machine is working in a cold climate region.
    •     
  • Cat Payload for scrapers is an earthmoving solution for optimal payload and job site efficiency. Cat Payload achieves on-the-go weighing using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with sequence assist, which provides increased productivity with less operator effort. Cat Payload is an automatic feature when ordered with sequence assist.











Work in Comfort

        
  • Reduce up to 14 individual operator commands per cycle with Sequence Assist.
    •     
  • Steer with less effort using the newly designed high-pressure steering system.Enjoy interior improvements and a more ergonomic work environment with a 21% larger cab than the G Series cab.
    •     
  • Intuitive, ergonomic controls keep operators focused on their work.
    •     
  • Maintain desired cab temperature with automatic temperature
        control.




Designed for Safety


        
  • Enhance an operator’s awareness of site surroundings with the Work Area Vision System (WAVS).
    •     
  • Get in and out of the cab easier with the new powered access ladder system (optional attachment).
    •     
  • Seat belt indicator provides visual and audible alerts when the seatbelt is not in use.
    •     
  • The Advanced Cushion Hitch allows the cushion hitch to prevent endstroke by predicting endstroke events and managing the rate of dampening, resulting in reduced hitch maintenance and improved operator ride in rough conditions.
    •     
  • Easy ground-level access to fuel fill, tractor fuel filters, and tractor engine oil filter.




Easy to Operate

        
  • The spacious cab features easy, intuitive controls and excellent visibility. The cab provides a comfortable working environment for all-day operations.
    •     
  • Cat Advanced Ride Management (ARM) seat suspension reduces end stroke movement of the load cylinder for a smoother ride.
    •     
  • Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine’s speed by canceling the throttle command and engaging the engine compression brake.






Integrated Cat Technologies

        
  • Monitor, manage, and enhance jobsite operations.
    •     
  • Hit target grade faster and more accurately with Cat Grade technologies. Finish jobs in fewer passes and with fewer operator efforts, saving you time and helping to increase profit.
    •     
  • Product Link™ collects machine data that can be viewed online
        through web and mobile applications (optional attachment).
    •     
  • Access information anytime, anywhere with VisionLinkTM – use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your
        jobsite.
    •     
  • Shorten the learning curve for inexperienced operators with
        Sequence Assist and Load Assist (included with Cat Grade
        attachment).
    •     







Execute Efficiency

        
  • The new tractor's hydraulic on-demand fan helps assist in lower fuel
        consumption.
    •     
  • Using draft-arm overflow guards diverts material away from the bowl, preventing material from getting caught between the draft
        arms and the bowl sides.
    •     
  • Cat Grade (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.






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)

Optional Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • STEERING ARRANGEMENTS
    • Secondary Steering Arrangement
  • INTEGRATED TECHNOLOGIES
    • Sequence Assist Arrangement with Payload Estimator
    • Load Assist
    • Cat Grade Control with Load Assist
    • Advanced Tire Spin Reduction
  • OTHER ATTACHMENTS
    • Camera arrangement – Work Area Vision System (WAVS)
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Wiring group
    • Push Pull
    • Year of manufacture plate
  • SERVICE INSTRUCTIONS
    • Film arrangement – International (ISO)