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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 | 570 hp |
| Scraper Bowl | |
| Scraper Capacity - Heaped | 34 yd³ |
| Transmission | |
| Top Speed - Loaded | 34.7 mile/h |
| Dimensions | |
| Front of Tractor to Front Axle | 142.2 in |
| Axle to Vertical Hitch Pin | 20 in |
| Wheel Base | 346.8 in |
| Rear Axle - Rear of Machine | 90.2 in |
| Length - Maximum (Push-Pull) | 655.1 in |
| Width - Overall Machine | 155 in |
| Width - Rear Tire Centers | 96.9 in |
| Extended Push Block (Push-Pull) | 108 in |
| Width - Outside Rear Tires | 143.2 in |
| Width - Inside of Bowl | 134 in |
| Height - Scraper Blade Maximum | 20 in |
| Ground Clearance - Tractor | 26.1 in |
| Width - Tractor | 137.8 in |
| Length - Overall Machine - Standard | 597 in |
| Height - Overall Shipping | 163.2 in |
| Height - Top of Cab | 147 in |
| Engine | |
| Flywheel Power - Scraper | 290 hp |
| Rated Engine RPM - Scraper | 2150 r/min |
| Flywheel Power - Tractor | 570 hp |
| Emissions | Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards. |
| Rated Engine RPM - Tractor | 1900 r/min |
| Engine Model - Scraper | Cat C9.3 |
| Engine Model - Tractor | Cat C18 |
| Service Refill Capacities | |
| Hydraulic System | 37.5 gal (US) |
| Crankcase - Tractor | 13.7 gal (US) |
| Diesel Exhaust Fluid - Tractor | 8 gal (US) |
| Diesel Exhaust Fluid - Scraper | 5.8 gal (US) |
| Transmission System - Scraper | 12.9 gal (US) |
| Fuel Tank | 370 gal (US) |
| Cooling System - Scraper | 16.1 gal (US) |
| Crankcase - Scraper | 6.5 gal (US) |
| Cooling System - Tractor | 19.8 gal (US) |
| Transmission System - Tractor | 29 gal (US) |
| Non Push-Pull | |
| Operating Weight - Empty | 114950 lb |
| Overall Length | 49.34 ft |
| Push-Pull | |
| Overall Length - With Bail Down | 54.59 ft |
| Operating Weight - Empty | 119060 lb |
| 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.” |
| Safety Criteria Compliance Standards | |
| Reverse Alarm | ISO 9533:2010 |
| 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) |
| Seat Belt | SAE J386:FEB2006 |
| Steering System | ISO 5010:2007 |
| Travel Speeds - Runout | |
| Transmission Gear - Reverse | 6.2 mile/h |
| Transmission Gear - Second | 6.2 mile/h |
| Transmission Gear - First | 3.4 mile/h |
| Transmission Gear - Seventh | 25.7 mile/h |
| Transmission Gear - Sixth | 19 mile/h |
| Transmission Gear - Fourth | 10.5 mile/h |
| Transmission Gear - Third | 7.7 mile/h |
| Transmission Gear - Fifth | 14.1 mile/h |
| Transmission Gear - Eighth | 34.7 mile/h |
| Implement Cycle Times | |
| Bail Lower | 2.1 s |
| Apron Lower | 3.8 s |
| Apron Raise | 4 s |
| Bowl Lower | 3.5 s |
| Bowl Raise | 3.5 s |
| Ejector Retract | 8.5 s |
| Bail Raise | 1.5 s |
| Ejector Extend | 8.5 s |
| General | |
| Scraper Capacity - Struck | 24 yd³ |
| Width - Cut | 11.5 ft |
| 180° Curb-to-Curb Turning Width | 40.12 ft |
| Fuel Tank Refill Capacity - Scraper | 370 gal (US) |
| Scraper Capacity - Heaped | 34 yd³ |
| Overall Width | 12.93 ft |
| Top Speed - Loaded | 34.7 mile/h |
| Overall Shipping Height | 13.62 ft |
| Maximum Depth of Cut | 17.7 in |
| Tires - Tractor | 37.25R35**E3 |
| Maximum Depth of Spread | 21.1 in |
| Tires - Scraper | 37.25R35**E3 |
| Rated Load | 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons) |
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 Estimator for scrapers is an earthmoving solution for optimal payload and job site efficiency. Payload Estimator achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Payload Estimator is optimized to be used with sequence assist, which provides increased productivity with less operator effort. Payload Estimator is an automatic feature when ordered with sequence assist.
Work in Comfort
• Reduce up to 14 individual operator commands per cycle with sequence assist (optional attachment).
• 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
• Get in and out of the cab easier with the new powered access ladder system (optional attachment).
• Enhance an operator’s awareness of site surroundings with the optional work area vision system (WAVS).
• Seat belt indicator provides visual and audible alerts when the seat
belt is not in use.
• Advanced cushion hitch allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening, resulting in reduced hitch maintenance and improved operator ride in rough conditions.
• Easy ground-level access to fuel, water, and engine oil.
Easy to Operate
• The spacious cab features easy, intuitive controls and excellent
visibility. The cab provides a comfortable working environment for
all-day operation.
• 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 speed by canceling the throttle command and engaging the engine compression brake.
Integrated Cat Technologies
• Monitor, manage, and enhance job site operations.
• Hit target grade faster and more accurately with Cat Grade
technologies. Finish jobs in fewer passes and with less operator
effort, 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 VisionLink®– useit to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve the safety and security of your job site.
• Shorten the learning curve for inexperienced operators with load
assist (optional attachment).
Execute Efficiency
• The new tractor 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 Control (optional attachment) intelligently ensures the
machine does not cut below grade in a cut area or overfill in the
fill area.
Standard Equipment:
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- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
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- Power Train – Tractor
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- 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
- 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
-
- 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
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- 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
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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
-
- 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:
-
- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
- Steering Arrangements
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- 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
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- Camera arrangement – Work Area Vision System (WAVS)
- Cab beacon
- Air horn
- Air horn and beacon
- Wiring group
- Push Pull
-
- Service Instructions
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- Film arrangement – U.S. (ANSI)
- Film arrangement – International (ISO)
