637K Wheel Tractor – Coal Bowl Scraper

Engine

Flywheel Power - Tractor/Scraper

425 kW (570 hp)/216 kW (290 hp)

Operating Specifications

Scraper Capacity - Heaped	38 m³
Top Speed - Loaded	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	12.98 m
Flywheel Power - Tractor	425 kW
Tires - Tractor	37.25R35**E3
Overall Width	3.94 m
Rated Engine RPM - Scraper	2150 r/min
Rated Engine RPM - Tractor	1900 r/min
Operating Weight - Empty	52425 kg
Scraper Capacity - Heaped	38 m³
Width - Cut	3.51 m
Top Speed - Loaded	55.8 km/h
Overall Length	15480 mm
Fuel Tank Refill Capacity - Scraper	1400 l
Scraper Capacity - Struck	31 m³
Overall Shipping Height	4.15 m
Maximum Depth of Cut	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	535 mm
Flywheel Power - Scraper	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	61 l
Diesel Exhaust Fluid - Scraper	22 l
Transmission System - Tractor	110 l
Crankcase - Tractor	52 l
Diesel Exhaust Fluid - Tractor	30.5 l
Fuel Tank	1400 l
Transmission System - Scraper	49 l
Hydraulic System	142 l
Cooling System - Tractor	75 l
Crankcase - Scraper	24.5 l

Travel Speeds - Runout

Transmission Gear - Eighth	55.8 km/h
Transmission Gear - First	5.5 km/h
Transmission Gear - Fourth	16.9 km/h
Transmission Gear - Reverse	9.9 km/h
Transmission Gear - Third	12.4 km/h
Transmission Gear - Seventh	41.95 km/h
Transmission Gear - Fifth	22.7 km/h
Transmission Gear - Sixth	30.6 km/h
Transmission Gear - Second	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	3937 mm
Width - Tractor	3499 mm
Ground Clearance - Tractor	664 mm
Axle to Vertical Hitch Pin	509 mm
Height - Top of Cab	3733 mm
Width - Outside Rear Tires	3636 mm
Height - Scraper Blade Maximum	538 mm
Rear Axle - Rear of Machine	2424 mm
Width - Rear Tire Centers	2462 mm
Front of Tractor to Front Axle	3612 mm
Width - Inside of Bowl	3404 mm
Length - Overall Machine - Standard	15480 mm
Height - Overall Shipping	4140 mm
Wheel Base	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).

Main Features and Benefits

Large Capacity Coal Scraper Bowl

Coal Bowls are longer and higher than standard scraper bowls, which allows Wheel Tractor-Scrapers 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.

Compaction

Coal bowl scrapers are effective in compacting coal, which reduces the risk of spontaneous combustion of coal in the stockpile by eliminating the air spaces.

Tractor Serviceability Improvement

The fuel, water and engine oil are relocated at ground level on the right hand side of the machine for easy access.

Brakes

Have been changed from an air actuated drum shoe brake to a hydraulic actuated tractor wet disc brake and a scraper dry caliper.

Tire Spin Reduction

This feature will allow the machine to control the slip of the tractor tires only. When Tire Spin Reduction is selected the machine will control wheel spin on the tractor by keeping the slip in the optimal range for loading by adjusting engine rpms with no additional operator input.

Engine Over Speed Protection

In the event of an engine over speed situation, the compression brake or brakes will automatically engage with no operator input. The machine determines the over speed condition based on rate of acceleration and applies compression brakes automatically.

Advanced Cushion Hitch

With similar technology as the Cat® Advanced Ride Management seat suspension, this software 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.

High Pressure Steering

K Series steering system design requires significantly less steering effort. The reduced steering effort will allow for decreased operator fatigue and a more efficient operator resulting in possible higher rates of production late in the work cycle.

Auto Stall

In cold weather conditions the machine will use the Auto Stall feature to help warm up the transmission oil faster resulting in the machine shifting out of torque converter drive (2nd gear) faster than on previous models.

Differential Lock Engagement Protection

This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur.

Cab Improved

The K Series cab interior improves operator comfort and visibility. The overall interior is 21% larger than the G Series cab.

Machine Speed Limit

This feature is designed to take the place of top gear selection. If the machine top speed needs to be limited the operator can select the top speed through the display or the top speed can be set in ET. This will allow the machine to find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases resulting in a lower engine load factor and lower fuel burn verses using top gear selection that required the machine to run at engine speeds at or close to high idle.

Ground Speed Control

Ground Speed Control sets the desired top speed by the operator if job site conditions or segment speed limits require a speed less than full run out. Machine Speed Limit is intended for use when top speed needs to be limited for longer durations and Ground Speed Control is intended for use when the top speed needs to be reduced for shorter segments or intermediate periods of time. The operator can set the desired top speed and the machine will find the correct gear that works best for the engine and transmission. In most cases, allowing the engine and transmission to select the correct gear to pull the load will result in a lower engine load factor and lower fuel burn verses top gear selection.

Fuel Economy Mode

This is a two part feature when selected, the first part of the feature lowers the transmission shift points allowing shifting to take place at lower rpms to aid in fuel savings. The second part of the Fuel Economy Mode allows the machine, when operated at engine rpms less than full throttle, to automatically vary the power distribution between the tractor and the scraper, allowing the machine to utilize the more efficient tractor power train vs. the full time torque convertor drive scraper power train.

Sequence Assist (Optional Attachment)

This option uses cylinder position sensors to automate bowl, apron and further implement controls throughout the four core work cycles: Dig, Haul, Unload and Return. When utilized this can reduce up to 14 individual operator commands per cycle. Sequence Assist simplifies control over the implements, reduces joystick usage, automatically controls cushion hitch, transmission hold and ejector.

POWER TRAIN – TRACTOR

 Cat C18 ACERT 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:<ul><li>Primary and secondary, wet disc, hydraulic actuated</li><li>Parking, hydraulic-released, spring-applied</li></ul>

 Throttle lock

 Transmission:<ul><li>8-speed planetary power shift</li><li>ECPC control</li><li>APECS software</li><li>Programmable top gear selection</li><li>Transmission hold</li><li>Differential lo

Cat C18 ACERT 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 actuatedParking, hydraulic-released, spring-applied

Throttle lock

Transmission:8-speed planetary power shiftECPC controlAPECS softwareProgrammable top gear selectionTransmission holdDifferential lo

POWER TRAIN – SCRAPER

 Cat C9.3 ACERT engine<ul><li>High pressure common rail fuel</li><li>Constant lift engine brake</li></ul>

 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:<ul><li>Primary and secondary, dry caliper, hydraulic actuated</li></ul>

 Transmission:<ul><li>4-speed (torque converter drive)</li><li>Planetary power shift</li></ul>

ELECTRICAL – TRACTOR

 Alternator, 150 Amp

 Batteries (4), 12V, 1,000 CCA, maintenance free, high output

 Electrical system, 24V

 Lighting system:<ul><li>Headlights, LED</li><li>Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)</li></ul>

 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:<ul><li>Brake lights, LED</li><li>Turn signals with hazard function, LED</li></ul>

Alarm, backup

Batteries (4) 12V, 1,000 CAA, maintenance free, high output

Alternator, 65 Amp

Electrical system, 24V

Lighting system:Brake lights, LEDTurn 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:<ul><li>Throttle lock</li><li>Wipers/washers</li><li>Hazard lights</li><li>Retarding level select</li><li>Work lights on, off</li><li>Information mode on Messenger Disp

 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:<ul><li>Coolant temperature</li><li>Engine oil temperature</li><li>Hydraulic oil temperature</li><li>Fuel level</li><li>Park brake</li><li>Implement lockout<

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 lockWipers/washersHazard lightsRetarding level selectWork lights on, offInformation mode on Messenger Disp

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 temperatureEngine oil temperatureHydraulic oil temperatureFuel levelPark brakeImplement lockoutt

FLUIDS

 Extended Life Coolant to –37° C (–34° F)

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<ul><li>31 m3 (41 yd3), struck</li><li>38 m3 (50 yd3), heaped</li></ul>

 Vandalism locks

 Scraper fenders

 Fast oil change

 Rims (2)

 Hydraulic position sensing cylinders (bowl lift and apron)

Coal Bowl31 m3 (41 yd3), struck38 m3 (50 yd3), heaped

Vandalism locks

Scraper fenders

Fast oil change

Rims (2)

Hydraulic position sensing cylinders (bowl lift and apron)

STEERING ARRANGEMENTS

 Secondary Steering Arrangement

Secondary Steering Arrangement

INTEGRATED TECHNOLOGIES

 Sequence Assist Arrangement

 Advanced Tire Spin Reduction

Sequence Assist Arrangement

Advanced Tire Spin Reduction

OTHER ATTACHMENTS

 Camera arrangement – WAVS

 Cab beacon

 Air horn

 Air horn and beacon

 Wiring group

Camera arrangement – WAVS

Cab beacon

Air horn

Air horn and beacon

Wiring group

SERVICE INSTRUCTIONS

 Film arrangement – U.S. (ANSI)

 Film arrangement – International (ISO)

Film arrangement – U.S. (ANSI)

Film arrangement – International (ISO)

360° Exterior View 360° Interior View