637 Wheel Tractor-Scraper

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Description

Technical Specifications

Benefits and Features

Equipment

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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
Travel Speeds - Runout
Transmission Gear - First	3.4 mile/h
Transmission Gear - Second	6.2 mile/h
Transmission Gear - Third	7.7 mile/h
Transmission Gear - Fourth	10.5 mile/h
Transmission Gear - Fifth	14.1 mile/h
Transmission Gear - Sixth	19 mile/h
Transmission Gear - Seventh	25.7 mile/h
Transmission Gear - Eighth	34.7 mile/h
Transmission Gear - Reverse	6.2 mile/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	1900 r/min
Flywheel Power - Tractor	570 hp
Engine Model - Scraper	Cat® C9.3
Rated Engine RPM - Scraper	2150 r/min
Flywheel Power - Scraper	290 hp
General
Overall Width	12.93 ft
Overall Shipping Height	13.7 ft
Scraper Capacity - Struck	24 yd³
Scraper Capacity - Heaped	34 yd³
Rated Load	37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Width - Cut	11.5 ft
Maximum Depth of Cut	17.7 in
Top Speed - Loaded	34.7 mile/h
Maximum Depth of Spread	21.1 in
180° Curb-to-Curb Turning Width	40.12 ft
Tires - Tractor	37.25R35**E3
Tires - Scraper	37.25R35**E3
Fuel Tank Refill Capacity - Scraper	370 gal (US)
Service Refill Capacities
Real Wheels (Each)	2.37 gal (US)
Crankcase - Tractor	13.7 gal (US)
Transmission System - Tractor	29 gal (US)
Cooling System - Tractor	18.75 gal (US)
Cooling System - Scraper	10.8 gal (US)
Fuel Tank	370 gal (US)
Hydraulic System	37.5 gal (US)
Crankcase - Scraper	6.5 gal (US)
Diesel Exhaust Fluid (DEF)*	8 gal (US)
Diesel Exhaust Fluid - Scraper	5.8 gal (US)
Transmission System - Scraper	12.9 gal (US)
Diesel Exhaust Fluid - Tractor	8 gal (US)
Dimensions
Width - Overall Machine	155 in
Width - Overall Machine - Ladder Down	152.7 in
Width - Tractor	137.8 in
Width - Rear Tire Centers	96.9 in
Width - Inside of Bowl	134 in
Width - Outside Bowl - Shipping Width	143.1 in
Height - Top of Cab	149.8 in
Front of Tractor to Front Axle	142.2 in
Ground Clearance - Tractor	26.1 in
Axle to Vertical Hitch Pin	20 in
Height - Scraper Blade Maximum	20 in
Wheel Base	346.8 in
Length - Overall Machine - Standard	597 in
Length - Maximum (Push-Pull)	655.1 in
Rear Axle - Rear of Machine	90.2 in
Width - Outside Rear Tires	143.2 in
Extended Push Block (Push-Pull)	108 in
Height - Overall Shipping	163.2 in
Push-Pull
Operating Weight - Empty	119060 lb
Overall Length - With Bail Down	54.59 ft
Non Push-Pull
Overall Length	49.34 ft
Operating Weight - Empty	114950 lb
Safety Criteria Compliance Standards
Brakes	ISO 3450:2011
Seat Belt	SAE J386:FEB2006
Reverse Alarm	ISO 9533:2010
Rollover Protection Structure (ROPS)	ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Falling Object Protective Structure (FOPS)	ISO 3449:2005 Level II
Steering System	ISO 5010:2007
Cab
ROPS/FOPS	ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6393) is 119 dB(A).
Implement Cycle Times
Bowl Raise	3.5 s
Bowl Lower	3.5 s
Apron Raise	4 s
Apron Lower	3.8 s
Ejector Extend	8.5 s
Ejector Retract	8.5 s
Bail Raise	1.5 s
Bail Lower	2.1 s

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.

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)

Be More Productive

Work in Comfort

Designed for Safety

Easy to Operate

Integrated Cat Technologies

Execute Efficiency

Standard Equipment:

Optional Equipment:

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