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.

Tractor Engine

Flywheel Power - Tractor/Scraper 570hp

Scraper Bowl

Scraper Capacity - Heaped 34yd³

Transmission

Top Speed - Loaded 34.7mile/h

Engine

Emissions Cat® C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Engine Model - Tractor Cat® C18
Rated Engine RPM - Tractor 1900r/min
Flywheel Power - Tractor 570hp
Engine Model - Scraper Cat® C9.3
Rated Engine RPM - Scraper 2150r/min
Flywheel Power - Scraper 290hp

Travel Speeds - Runout

Transmission Gear - First 3.4mile/h
Transmission Gear - Second 6.2mile/h
Transmission Gear - Third 7.7mile/h
Transmission Gear - Fourth 10.5mile/h
Transmission Gear - Fifth 14.1mile/h
Transmission Gear - Sixth 19mile/h
Transmission Gear - Seventh 25.7mile/h
Transmission Gear - Eighth 34.7mile/h
Transmission Gear - Reverse 6.2mile/h

General

Overall Width 12.93ft
Overall Shipping Height 13.7ft
Scraper Capacity - Struck 24yd³
Scraper Capacity - Heaped 34yd³
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Width - Cut 11.5ft
Maximum Depth of Cut 17.7in
Maximum Depth of Spread 21.1in
Top Speed - Loaded 34.7mile/h
180° Curb-to-Curb Turning Width 40.12ft
Tires - Tractor 37.25R35**E3
Tires - Scraper 37.25R35**E3
Fuel Tank Refill Capacity - Scraper 370gal (US)

Service Refill Capacities

Real Wheels (Each) 2.37gal (US)
Crankcase - Tractor 13.7gal (US)
Transmission System - Tractor 29gal (US)
Cooling System - Tractor 18.75gal (US)
Cooling System - Scraper 10.8gal (US)
Fuel Tank 370gal (US)
Hydraulic System 37.5gal (US)
Crankcase - Scraper 6.5gal (US)
Diesel Exhaust Fluid (DEF)* 8gal (US)
Diesel Exhaust Fluid - Scraper 5.8gal (US)
Transmission System - Scraper 12.9gal (US)
Diesel Exhaust Fluid - Tractor 8gal (US)

Dimensions

Width - Overall Machine 155in
Width - Overall Machine - Ladder Down 152.7in
Width - Tractor 137.8in
Width - Rear Tire Centers 96.9in
Width - Inside of Bowl 134in
Width - Outside Bowl - Shipping Width 143.1in
Height - Top of Cab 149.8in
Front of Tractor to Front Axle 142.2in
Ground Clearance - Tractor 26.1in
Axle to Vertical Hitch Pin 20in
Height - Scraper Blade Maximum 20in
Wheel Base 346.8in
Length - Overall Machine - Standard 597in
Length - Maximum (Push-Pull) 655.1in
Rear Axle - Rear of Machine 90.2in
Width - Outside Rear Tires 143.2in
Extended Push Block (Push-Pull) 108in
Height - Overall Shipping 163.2in

Non Push-Pull

Overall Length 49.34ft
Operating Weight - Empty 114950lb

Push-Pull

Operating Weight - Empty 119060lb
Overall Length - With Bail Down 54.59ft

Cab

Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 119 dB(A).
ROPS/FOPS ROPS/FOPS meet “ISO Standards.”

Safety Criteria Compliance Standards

Steering System ISO 5010:2007
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Brakes ISO 3450:2011
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Reverse Alarm ISO 9533:2010
Seat Belt SAE J386:FEB2006

Implement Cycle Times

Bowl Raise 3.5s
Bowl Lower 3.5s
Apron Raise 4s
Apron Lower 3.8s
Ejector Extend 8.5s
Ejector Retract 8.5s
Bail Raise 1.5s
Bail Lower 2.1s

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
      • Diesel Particulate Filter (DPF) temperature
      • Fuel level
      • Park brake
      • Implement lockout
      • Brake system
      • Regeneration required
      • 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
      • DEF fill levels
  • 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
  • Service Instructions
    • Film arrangement – U.S. (ANSI)
    • Film arrangement – International (ISO)