637K Wheel Tractor-Scraper

Scraper Capacity: Heaped: 34 yd3
Top Speed (Loaded): 34.7 mph
Width – Overall Machine: 155 in
Width – Tractor: 137.8 in

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.

Product Specs

Scraper Bowl

Scraper Capacity: Heaped: 34yd3
Scraper Capacity - Heaped: 34yd³

Transmission

Top Speed (Loaded): 34.7mph
Top Speed - Loaded: 34.7mile/h

Dimensions

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
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
Front of Tractor to Front Axle: 142.2in
Axle to Vertical Hitch Pin: 20in

Engine

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

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

General Data

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

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.”

Implement Cycle Times

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

Service Refill Capacities

Cooling System: Scraper: 16.1gal
Cooling System: Tractor: 19.8gal
Crankcase: Scraper: 6.5gal
Crankcase: Tractor: 13.7gal
Diesel Exhaust Fluid: Scraper: 5.8gal
Diesel Exhaust Fluid: Tractor: 8gal
Fuel Tank: 370gal
Hydraulic System: 37.5gal
Transmission System: Scraper: 12.9gal
Transmission System: Tractor: 29gal
Cooling System - Scraper: 16.1gal (US)
Cooling System - Tractor: 19.8gal (US)
Crankcase - Scraper: 6.5gal (US)
Crankcase - Tractor: 13.7gal (US)
Diesel Exhaust Fluid - Scraper: 5.8gal (US)
Diesel Exhaust Fluid - Tractor: 8gal (US)
Fuel Tank: 370gal (US)
Hydraulic System: 37.5gal (US)
Transmission System - Scraper: 12.9gal (US)
Transmission System - Tractor: 29gal (US)

Safety Criteria Compliance Standards

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

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

Tractor Engine

Flywheel Power - Tractor/Scraper: 570HP

Push-Pull

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

Non Push-Pull

Operating Weight - Empty: 114950lb
Overall Length: 49.34ft

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

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)

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)

Open Bowl Scrapers:

637K Wheel Tractor-Scraper

Product Specs

Scraper Bowl

Transmission

Dimensions

Engine

Travel Speeds (Runout)

General Data

Cab

Implement Cycle Times

Service Refill Capacities

Safety Criteria Compliance Standards

Travel Speeds - Runout

Tractor Engine

Push-Pull

Non Push-Pull

General

Equipment

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Product Specs

Scraper Bowl

Transmission

Dimensions

Engine

Travel Speeds (Runout)

General Data

Cab

Implement Cycle Times

Service Refill Capacities

Safety Criteria Compliance Standards

Travel Speeds - Runout

Tractor Engine

Push-Pull

Non Push-Pull

General

Equipment

Request a Quote

Find a Boyd CAT Location or Rep Near You

Find a Boyd CAT
Location or Rep Near You