637K

Scraper Capacity - Heaped: 50 yd³ / 38 m³
Top Speed - Loaded: 34.7 mile/h / 55.8 km/h
180° Curb-to-Curb Turning Width: 42.59 ft / 12.98 m

637K coal bowls are longer and higher than standard wheel tractor scraper bowls, allowing them to haul 38 m (50 yd) of low density loose coal. The bowls are designed and built to specifically deliver in coming loose coal to the stock pile and reserve stock piled coal to the feeder system.

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637K Product Brochure

Specifications
Equipment
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Engine
Flywheel Power - Tractor/Scraper	425 kW (570 hp)/216 kW (290 hp)

Operating Specifications
Scraper Capacity - Heaped	50 yd³ / 38 m³
Top Speed - Loaded	34.7 mile/h / 55.8 km/h

Safety Criteria Compliance Standards
Brakes	ISO 3450:2011
Steering System	ISO 5010:2007
Seat Belt	SAE J386:FEB2006
Falling Object Protective Structure (FOPS)	ISO 3449:2005 Level II
Reverse Alarm	ISO 9533:2010
Rollover Protection Structure (ROPS)	ISO 3471:2008 for up to 21 282 kg (46,919 lb)

General
180° Curb-to-Curb Turning Width	42.59 ft / 12.98 m
Flywheel Power - Tractor	570 hp / 425 kW
Tires - Tractor	37.25R35**E3
Overall Width	12.93 ft / 3.94 m
Rated Engine RPM - Scraper	2150 r/min
Rated Engine RPM - Tractor	1900 r/min
Operating Weight - Empty	117782 lb / 52425 kg
Scraper Capacity - Heaped	50 yd³ / 38 m³
Width - Cut	11.5 ft / 3.51 m
Top Speed - Loaded	34.7 mile/h / 55.8 km/h
Overall Length	609.5 in / 15480 mm
Fuel Tank Refill Capacity - Scraper	370 gal (US) / 1400 l
Scraper Capacity - Struck	41 yd³ / 31 m³
Overall Shipping Height	13.62 ft / 4.15 m
Maximum Depth of Cut	17.7 in / 450 mm
Emissions	Cat C9.3 and Cat C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV engine emission standards.
Maximum Depth of Spread	21.1 in / 535 mm
Flywheel Power - Scraper	290 hp / 216 kW
Rated Load	34 472 kg (76,000 lb)/34.20 tonnes (38 tons)
Engine Model - Scraper	Cat C9.3
Engine Model - Tractor	Cat C18
Tires - Scraper	37.25R35**E3

Service Refill Capacities
Cooling System - Scraper	16.1 gal (US) / 61 l
Diesel Exhaust Fluid - Scraper	5.8 gal (US) / 22 l
Transmission System - Tractor	29 gal (US) / 110 l
Crankcase - Tractor	13.7 gal (US) / 52 l
Diesel Exhaust Fluid - Tractor	8 gal (US) / 30.5 l
Fuel Tank	370 gal (US) / 1400 l
Transmission System - Scraper	12.9 gal (US) / 49 l
Hydraulic System	37.5 gal (US) / 142 l
Cooling System - Tractor	19.8 gal (US) / 75 l
Crankcase - Scraper	6.5 gal (US) / 24.5 l

Travel Speeds - Runout
Transmission Gear - Eighth	34.7 mile/h / 55.8 km/h
Transmission Gear - First	3.4 mile/h / 5.5 km/h
Transmission Gear - Fourth	10.5 mile/h / 16.9 km/h
Transmission Gear - Reverse	6.2 mile/h / 9.9 km/h
Transmission Gear - Third	7.7 mile/h / 12.4 km/h
Transmission Gear - Seventh	25.7 mile/h / 41.95 km/h
Transmission Gear - Fifth	14.1 mile/h / 22.7 km/h
Transmission Gear - Sixth	19 mile/h / 30.6 km/h
Transmission Gear - Second	6.2 mile/h / 10 km/h

Implement Cycle Times
Bail Raise	1.5 s
Bowl Lower	3.5 s
Apron Lower	3.8 s
Ejector Retract	8.5 s
Bail Lower	2.1 s
Apron Raise	4 s
Ejector Extend	8.5 s
Bowl Raise	3.5 s

Dimensions
Width - Overall Machine	155 in / 3937 mm
Width - Tractor	137.8 in / 3499 mm
Ground Clearance - Tractor	26.1 in / 664 mm
Axle to Vertical Hitch Pin	20 in / 509 mm
Height - Top of Cab	147 in / 3733 mm
Width - Outside Rear Tires	143.2 in / 3636 mm
Height - Scraper Blade Maximum	21.2 in / 538 mm
Rear Axle - Rear of Machine	95.4 in / 2424 mm
Width - Rear Tire Centers	96.9 in / 2462 mm
Front of Tractor to Front Axle	142.2 in / 3612 mm
Width - Inside of Bowl	134 in / 3404 mm
Length - Overall Machine - Standard	609.5 in / 15480 mm
Height - Overall Shipping	163 in / 4140 mm
Wheel Base	377 in / 9576 mm

Cab
ROPS/FOPS	Meet ISO standards
Exterior Sound Power Level	The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).

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 CAA, 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
  - Fuel level
  - Park brake
  - Implement lockout
  - Brake system
  - 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
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
- Coal Bowl
  - 31 m3 (41 yd3), struck
  - 38 m3 (50 yd3), heaped
- Vandalism locks
- Scraper fenders
- 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
- Advanced Tire Spin Reduction
OTHER ATTACHMENTS
- Camera arrangement – WAVS
- Cab beacon
- Air horn
- Air horn and beacon
- Wiring group
SERVICE INSTRUCTIONS
- Film arrangement – U.S. (ANSI)
- Film arrangement – International (ISO)

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