637K Wheel Tractor-Scraper
Cat’s 637K 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. Built with twin engines, the 637K has high rolling resistance and additional power for loading, traveling up grades, and over fill areas—ultimately creating faster cycle times.
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Scraper Bowl
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- Scraper Capacity: Heaped
- 34yd3
- Scraper Capacity - Heaped
- 34yd³
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Transmission
-
- Top Speed (Loaded)
- 34.7mph
- Top Speed - Loaded
- 34.7mile/h
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Dimensions
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- Width – Overall Machine
- 155in
- Width – Tractor
- 137.8in
- Width – Inside of Bowl
- 134in
- Width – Outside Rear Tires
- 143.2in
- Height – Overall Shipping
- 163.2in
- Height – Top of Cab
- 147in
- Ground Clearance – Tractor
- 26.1in
- Front of Tractor to Front Axle
- 142.2in
- Axle to Vertical Hitch Pin
- 20in
- Height – Scraper Blade Maximum
- 20in
- Wheelbase
- 346.8in
- Rear Axle to Rear of Machine
- 90.2in
- Length – Overall Machine (Standard)
- 597in
- Width – Rear Tire Centers
- 96.9in
- Front of Tractor to Front Axle
- 142.2in
- Axle to Vertical Hitch Pin
- 20in
- Wheel Base
- 346.8in
- Rear Axle - Rear of Machine
- 90.2in
- Ground Clearance - Tractor
- 26.1in
- Height - Overall Shipping
- 163.2in
- Height - Scraper Blade Maximum
- 20in
- Height - Top of Cab
- 147in
- Length - Overall Machine - Standard
- 597in
- Width - Inside of Bowl
- 134in
- Width - Outside Rear Tires
- 143.2in
- Width - Overall Machine
- 155in
- Width - Rear Tire Centers
- 96.9in
- Width - Tractor
- 137.8in
- Length - Maximum (Push-Pull)
- 655.1in
- Extended Push Block (Push-Pull)
- 108in
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Service Refill Capacities
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- Transmission System: Scraper
- 12.9gal
- Transmission System: Tractor
- 29gal
- Cooling System: Scraper
- 16.1gal
- Cooling System: Tractor
- 19.8gal
- Crankcase: Scraper
- 6.5gal
- Crankcase: Tractor
- 13.7gal
- Fuel Tank
- 370gal
- Hydraulic System
- 37.5gal
- Cooling System - Scraper
- 16.1gal (US)
- Cooling System - Tractor
- 19.8gal (US)
- Crankcase - Scraper
- 6.5gal (US)
- Crankcase - Tractor
- 13.7gal (US)
- Fuel Tank
- 370gal (US)
- Hydraulic System
- 37.5gal (US)
- Transmission System - Scraper
- 12.9gal (US)
- Transmission System - Tractor
- 29gal (US)
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Safety Criteria Compliance Standards
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- Brakes
- ISO 3450:2011
- Falling Object Protective Structure (FOPS)
- ISO 3449:2005 Level II
- Reverse Alarm
- ISO 9533:2010
- Rollover Protection Structure (ROPS)
- ISO 3471:2008 for up to 21 282 kg (46,919 lb)
- Seat Belt
- SAE J386:FEB2006
- Steering System
- ISO 5010:2007
- Brakes
- ISO 3450:2011
- Falling Object Protective Structure (FOPS)
- ISO 3449:2005 Level II
- Reverse Alarm
- ISO 9533:2010
- Rollover Protection Structure (ROPS)
- ISO 3471:2008 for up to 21 282 kg (46,919 lb)
- Seat Belt
- SAE J386:FEB2006
- Steering System
- ISO 5010:2007
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Engine
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- Flywheel Power: Tractor
- 570hp
- Emissions
- Cat C9.3 ACERT and C18 ACERT engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
- Emissions
- Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
- Flywheel Power - Tractor
- 570HP
- Engine Model - Scraper
- Cat C9.3 ACERT
- Engine Model - Tractor
- Cat C18
- Flywheel Power - Scraper
- 290HP
- Rated Engine RPM - Scraper
- 2150r/min
- Rated Engine RPM - Tractor
- 1900r/min
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Travel Speeds (Runout)
-
- Transmission Gear: Eighth
- 34.7mph
- Transmission Gear: Fifth
- 14.1mph
- Transmission Gear: First
- 3.4mph
- Transmission Gear: Fourth
- 10.5mph
- Transmission Gear: Reverse
- 6.2mph
- Transmission Gear: Second
- 6.2mph
- Transmission Gear: Seventh
- 25.7mph
- Transmission Gear: Sixth
- 19.0mph
- Transmission Gear: Third
- 7.7mph
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General Data
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- 180° Curb-to-Curb Turning Width
- 40.12ft
- Fuel Tank Refill Capacity: Scraper
- 370gal
- Maximum Depth of Cut
- 17.7in
- Maximum Depth of Spread
- 21.1in
- Overall Shipping Height
- 13.62ft
- Overall Width
- 12.93ft
- Rated Load
- 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
- Scraper Capacity: Heaped
- 34yd3
- Scraper Capacity: Struck
- 24yd3
- Tires: Scraper
- 37.25R35**E3
- Tires: Tractor
- 37.25R35**E3
- Top Speed (Loaded)
- 34.7mph
- Width of Cut
- 11.50ft
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Cab
-
- Exterior Sound Level
- The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
- ROPS/FOPS
- ROPS/FOPS meet “ISO Standards.”
- Exterior Sound Level
- The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
- ROPS/FOPS
- ROPS/FOPS meet “ISO Standards.”
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Implement Cycle Times
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- Apron Lower
- 3.8seconds
- Apron Raise
- 4.0seconds
- Bail Lower
- 2.1seconds
- Bail Raise
- 1.5seconds
- Bowl Lower
- 3.5seconds
- Bowl Raise
- 3.5seconds
- Ejector Extend
- 8.5seconds
- Ejector Retract
- 8.5seconds
- Apron Lower
- 3.8s
- Apron Raise
- 4s
- Bail Lower
- 2.1s
- Bail Raise
- 1.5s
- Bowl Lower
- 3.5s
- Bowl Raise
- 3.5s
- Ejector Extend
- 8.5s
- Ejector Retract
- 8.5s
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Non Push-Pull
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- Operating Weight - Empty
- 114950lb
- Overall Length
- 49.34ft
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General
-
- 180° Curb-to-Curb Turning Width
- 40.12ft
- Fuel Tank Refill Capacity - Scraper
- 370gal (US)
- Maximum Depth of Cut
- 17.7in
- Maximum Depth of Spread
- 21.1in
- Overall Shipping Height
- 13.62ft
- Overall Width
- 12.93ft
- Rated Load
- 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
- Scraper Capacity - Heaped
- 34yd³
- Scraper Capacity - Struck
- 24yd³
- Tires - Scraper
- 37.25R35**E3
- Tires - Tractor
- 37.25R35**E3
- Top Speed - Loaded
- 34.7mile/h
- Width - Cut
- 11.5ft
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Travel Speeds - Runout
-
- Transmission Gear - Eighth
- 34.7mile/h
- Transmission Gear - Fifth
- 14.1mile/h
- Transmission Gear - First
- 3.4mile/h
- Transmission Gear - Fourth
- 10.5mile/h
- Transmission Gear - Reverse
- 6.2mile/h
- Transmission Gear - Second
- 6.2mile/h
- Transmission Gear - Seventh
- 25.7mile/h
- Transmission Gear - Sixth
- 19mile/h
- Transmission Gear - Third
- 7.7mile/h
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Tractor Engine
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- Flywheel Power - Tractor/Scraper
- 570HP
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Push-Pull
-
- Operating Weight - Empty
- 119060lb
- Overall Length - With Bail Down
- 54.59ft
Standard Equipment:
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- 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
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- 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
- Cat C9.3 engine:
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- Electrical – Tractor
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- 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
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- Electrical – Scraper
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- 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
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- Operator Environment – Tractor
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- 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
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- Fluids
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- Extended Life Coolant to –37° C (–34° F)
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- Other Standard Equipment – Tractor
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- 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
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- Other Standard Equipment – Scraper
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- 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)
- Bowl:
Optional Equipment:
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- Steering Arrangements
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- Secondary Steering Arrangement
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- Integrated Technologies
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- Sequence Assist Arrangement with Payload Estimator
- Load Assist
- Cat Grade Control with Load Assist
- Advanced Tire Spin Reduction
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- Other Attachments
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- Camera arrangement – Work Area Vision System (WAVS)
- Cab beacon
- Air horn
- Air horn and beacon
- Wiring group
- Push Pull
- Year of manufacture plate
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- Service Instructions
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- Film arrangement – International (ISO)
