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.
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Tractor Engine
- Flywheel Power - Tractor/Scraper
- 570HP
Scraper Bowl
- Scraper Capacity - Heaped
- 34yd³
Transmission
- Top Speed - Loaded
- 34.7mile/h
Dimensions
- 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
- Width - Inside of Bowl
- 134in
- Height - Scraper Blade Maximum
- 20in
- Length - Overall Machine - Standard
- 597in
- Height - Overall Shipping
- 163.2in
- Width - Outside Rear Tires
- 143.2in
- Length - Maximum (Push-Pull)
- 655.1in
- Extended Push Block (Push-Pull)
- 108in
- Width - Rear Tire Centers
- 96.9in
- Width - Overall Machine
- 155in
- Width - Tractor
- 137.8in
- Height - Top of Cab
- 147in
- Ground Clearance - Tractor
- 26.1in
General
- Rated Load
- 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
- Fuel Tank Refill Capacity - Scraper
- 370gal (US)
- 180° Curb-to-Curb Turning Width
- 40.12ft
- Overall Shipping Height
- 13.62ft
- Overall Width
- 12.93ft
- Top Speed - Loaded
- 34.7mile/h
- Scraper Capacity - Heaped
- 34yd³
- Width - Cut
- 11.5ft
- Maximum Depth of Cut
- 17.7in
- Tires - Scraper
- 37.25R35**E3
- Maximum Depth of Spread
- 21.1in
- Scraper Capacity - Struck
- 24yd³
- Tires - Tractor
- 37.25R35**E3
Engine
- Rated Engine RPM - Tractor
- 1900r/min
- Rated Engine RPM - Scraper
- 2150r/min
- Flywheel Power - Scraper
- 290HP
- Engine Model - Scraper
- Cat C9.3
- Emissions
- Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
- Flywheel Power - Tractor
- 570HP
- Engine Model - Tractor
- Cat C18
Service Refill Capacities
- Crankcase - Tractor
- 13.7gal (US)
- Crankcase - Scraper
- 6.5gal (US)
- Transmission System - Tractor
- 29gal (US)
- Hydraulic System
- 37.5gal (US)
- Diesel Exhaust Fluid - Scraper
- 5.8gal (US)
- Diesel Exhaust Fluid - Tractor
- 8gal (US)
- Fuel Tank
- 370gal (US)
- Transmission System - Scraper
- 12.9gal (US)
- Cooling System - Scraper
- 16.1gal (US)
- Cooling System - Tractor
- 19.8gal (US)
Non Push-Pull
- Overall Length
- 49.34ft
- Operating Weight - Empty
- 114950lb
Push-Pull
- Overall Length - With Bail Down
- 54.59ft
- Operating Weight - Empty
- 119060lb
Cab
- 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).
Safety Criteria Compliance Standards
- 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)
- Brakes
- ISO 3450:2011
- Falling Object Protective Structure (FOPS)
- ISO 3449:2005 Level II
- Steering System
- ISO 5010:2007
Travel Speeds - Runout
- Transmission Gear - Third
- 7.7mile/h
- Transmission Gear - Reverse
- 6.2mile/h
- Transmission Gear - First
- 3.4mile/h
- Transmission Gear - Seventh
- 25.7mile/h
- Transmission Gear - Fifth
- 14.1mile/h
- Transmission Gear - Eighth
- 34.7mile/h
- Transmission Gear - Fourth
- 10.5mile/h
- Transmission Gear - Second
- 6.2mile/h
- Transmission Gear - Sixth
- 19mile/h
Implement Cycle Times
- Bail Lower
- 2.1s
- Ejector Extend
- 8.5s
- Apron Lower
- 3.8s
- Bowl Raise
- 3.5s
- Bowl Lower
- 3.5s
- Apron Raise
- 4s
- Bail Raise
- 1.5s
- Ejector Retract
- 8.5s
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
- Cat C9.3 engine:
-
- 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)
- Bowl:
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)
Cat® Grade Connectivity
Cat® Seat Belt Reminder
Cat® Detect with Smart Camera
Cat® Detect with Surround Cameras
