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.
Product Images
637 Open Bowl Scraper
Product Videos
Wheel Tractor-Scraper K Series
Wheel Tractor-Scraper K Series Operator Testimonial
Wheel Tractor Scraper CAT® 631K C202
Virtual Product Tour (VPT)
360 Exterior View
360 Exterior View
360 Interior View
360 Interior View
Specifications
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Emissions | text | Cat® C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards. | ||||
| Engine Model - Tractor | text | Cat® C18 | ||||
| Rated Engine RPM - Tractor | measurement | 1900 | r/min | 1900 | r/min |
Documents & Spec Sheets
637 (11A) Wheel Tractor-Scraper - Key Features (Global, excluding Japan)
637 (11A) Wheel Tractor-Scraper - Key Features (Global, excluding Japan)
Download637 (11A) Wheel Tractor-Scraper - Technical Specifications (Global, excluding Japan)
637 (11A) Wheel Tractor-Scraper - Technical Specifications (Global, excluding Japan)
DownloadFeatures & Benefits
Be More Productive
- 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.
Complete Specifications
Engine
| Name | Type | Value | Unit Value (Imperial) | Unit Name | Unit Value (Metric) | Unit Name (Metric) |
|---|---|---|---|---|---|---|
| Emissions | text | Cat® C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards. | ||||
| Engine Model - Tractor | text | Cat® C18 | ||||
| Rated Engine RPM - Tractor | measurement | 1900 | r/min | 1900 | r/min | |
| Flywheel Power - Tractor | measurement | 570 | hp | 425 | kW | |
| Engine Model - Scraper | text | Cat® C9.3 | ||||
| Rated Engine RPM - Scraper | measurement | 2150 | r/min | 2150 | r/min | |
| Flywheel Power - Scraper | measurement | 290 | hp | 215 | kW | |
| Fuel Tank Refill Capacity - Scraper | measurement | 370 | gal (US) | 1400 | l | |
| Overall Width | measurement | 12.93 | ft | 3.94 | m | |
| Overall Shipping Height | measurement | 13.7 | ft | 4.15 | m | |
| Scraper Capacity - Struck | measurement | 24 | yd³ | 18.3 | m³ | |
| Scraper Capacity - Heaped | measurement | 34 | yd³ | 26 | m³ | |
| Rated Load | text | 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons) | ||||
| Width - Cut | measurement | 11.50 | ft | 3.51 | m | |
| Maximum Depth of Cut | measurement | 17.7 | in | 450 | mm | |
| Maximum Depth of Spread | measurement | 21.1 | in | 535 | mm | |
| Top Speed - Loaded | measurement | 34.7 | mile/h | 55.8 | km/h | |
| 180° Curb-to-Curb Turning Width | measurement | 40.12 | ft | 12.23 | m | |
| Tires - Tractor | text | 37.25R35**E3 | ||||
| Tires - Scraper | text | 37.25R35**E3 | ||||
| Flywheel Power - Tractor/Scraper | measurement | 570 | hp | 425 | kW | |
| Scraper Capacity - Heaped | measurement | 34 | yd³ | 26 | m³ | |
| Top Speed - Loaded | measurement | 34.7 | mile/h | 55.8 | km/h | |
| Transmission Gear - First | measurement | 3.4 | mile/h | 5.5 | km/h | |
| Transmission Gear - Second | measurement | 6.2 | mile/h | 10.0 | km/h | |
| Transmission Gear - Third | measurement | 7.7 | mile/h | 12.4 | km/h | |
| Transmission Gear - Fourth | measurement | 10.5 | mile/h | 16.9 | km/h | |
| Transmission Gear - Fifth | measurement | 14.1 | mile/h | 22.7 | km/h | |
| Transmission Gear - Sixth | measurement | 19.0 | mile/h | 30.6 | km/h | |
| Transmission Gear - Seventh | measurement | 25.7 | mile/h | 41.95 | km/h | |
| Transmission Gear - Eighth | measurement | 34.7 | mile/h | 55.8 | km/h | |
| Transmission Gear - Reverse | measurement | 6.2 | mile/h | 9.9 | km/h | |
| Real Wheels (Each) | measurement | 2.37 | gal (US) | 9.0 | l | |
| Crankcase - Tractor | measurement | 13.7 | gal (US) | 52 | l | |
| Transmission System - Tractor | measurement | 29 | gal (US) | 110 | l | |
| Cooling System - Tractor | measurement | 18.75 | gal (US) | 71 | l | |
| Cooling System - Scraper | measurement | 10.8 | gal (US) | 41 | l | |
| Fuel Tank | measurement | 370 | gal (US) | 1400 | l | |
| Hydraulic System | measurement | 37.5 | gal (US) | 142 | l | |
| Crankcase - Scraper | measurement | 6.5 | gal (US) | 24.5 | l | |
| Diesel Exhaust Fluid (DEF)* | measurement | 8.0 | gal (US) | 30.5 | l | |
| Diesel Exhaust Fluid - Scraper | measurement | 5.8 | gal (US) | 22 | l | |
| Transmission System - Scraper | measurement | 12.9 | gal (US) | 49 | l | |
| Width - Overall Machine | measurement | 155 | in | 3937 | mm | |
| Width - Overall Machine - Ladder Down | measurement | 152.7 | in | 3878 | mm | |
| Width - Tractor | measurement | 137.8 | in | 3499 | mm | |
| Width - Rear Tire Centers | measurement | 96.9 | in | 2462 | mm | |
| Width - Inside of Bowl | measurement | 134 | in | 3404 | mm | |
| Width - Outside Bowl - Shipping Width | measurement | 143.1 | in | 3635 | mm | |
| Height - Top of Cab | measurement | 149.8 | in | 3805 | mm | |
| Front of Tractor to Front Axle | measurement | 142.2 | in | 3612 | mm | |
| Ground Clearance - Tractor | measurement | 26.1 | in | 664 | mm | |
| Axle to Vertical Hitch Pin | measurement | 20 | in | 509 | mm | |
| Height - Scraper Blade Maximum | measurement | 20 | in | 510 | mm | |
| Wheel Base | measurement | 346.8 | in | 8808 | mm | |
| Length - Overall Machine - Standard | measurement | 597 | in | 15164 | mm | |
| Length - Maximum (Push-Pull) | measurement | 655.1 | in | 16640 | mm | |
| Rear Axle - Rear of Machine | measurement | 90.2 | in | 2292 | mm | |
| Overall Length | measurement | 49.34 | ft | 15.04 | m | |
| Operating Weight - Empty | measurement | 114950 | lb | 52140 | kg | |
| Operating Weight - Empty | measurement | 119060 | lb | 54005 | kg | |
| Overall Length - With Bail Down | measurement | 54.59 | ft | 16.64 | m | |
| Exterior Sound Level | text | The exterior sound power level for the standard machine (ISO 6393) is 119 dB(A). | ||||
| ROPS/FOPS | text | ROPS/FOPS meet “ISO Standards.” | ||||
| Steering System | text | ISO 5010:2007 | ||||
| Falling Object Protective Structure (FOPS) | text | ISO 3449:2005 Level II | ||||
| Brakes | text | ISO 3450:2011 | ||||
| Rollover Protection Structure (ROPS) | text | ISO 3471:2008 for up to 21 282 kg (46,919 lb) | ||||
| Reverse Alarm | text | ISO 9533:2010 | ||||
| Seat Belt | text | SAE J386:FEB2006 | ||||
| Bowl Raise | measurement | 3.5 | s | 3.5 | s | |
| Bowl Lower | measurement | 3.5 | s | 3.5 | s | |
| Apron Raise | measurement | 4.0 | s | 4.0 | s | |
| Apron Lower | measurement | 3.8 | s | 3.8 | s | |
| Ejector Extend | measurement | 8.5 | s | 8.5 | s | |
| Ejector Retract | measurement | 8.5 | s | 8.5 | s | |
| Bail Raise | measurement | 1.5 | s | 1.5 | s | |
| Bail Lower | measurement | 2.1 | s | 2.1 | s | |
| Diesel Exhaust Fluid - Tractor | measurement | 8 | gal (US) | 30.5 | l | |
| Width - Outside Rear Tires | measurement | 143.2 | in | 3636 | mm | |
| Extended Push Block (Push-Pull) | measurement | 108 | in | 2744 | mm | |
| Height - Overall Shipping | measurement | 163.2 | in | 4145 | mm |
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 actuatedParking, hydraulic-released, spring-applied
- Throttle lock
- Transmission:8-speed planetary power shiftECPC controlAPECS softwareProgrammable top gear selectionTransmission holdDifferential lockGuard, power trainStandard tire spin reductionGround speed controlMachine speed limitDifferential lock protection
POWER TRAIN – SCRAPER
- Cat® C9.3 engine:High pressure common rail fuelConstant 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, LEDTurn 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, LEDTurn 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 lockWipers/washersHazard lightsRetarding level selectWork lights on, offInformation 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 temperatureEngine oil temperatureHydraulic oil temperatureDiesel Particulate Filter (DPF) temperatureFuel levelPark brakeImplement lockoutBrake systemRegeneration requiredThrottle lockSystem voltageSecondary steeringBail downEjector autoDifferential lockApron floatTransmission holdCushion hitchHigh beam lightsAction lampEngine speed, rpmGear selectionDEF 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), struck26 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)