637K Wheel Tractor-Scraper

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.

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
 
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)
 

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