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Wheel Tractor-Scrapers

637

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.

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Overview

General

UNITS:

Metric

Imperial

Top Speed - Loaded	55.8 km/h	34.7 mile/h
180° Curb-to-Curb Turning Width	12.23 m	40.12 ft
Scraper Capacity - Heaped	26 m³	34 yd³
Overall Width	3.94 m	12.93 ft
Maximum Depth of Spread	535 mm	21.1 in
Maximum Depth of Cut	450 mm	17.7 in
Width - Cut	3.51 m	11.50 ft
Tires - Tractor	37.25R35**E3	37.25R35**E3
Tires - Scraper	37.25R35**E3	37.25R35**E3
Overall Shipping Height	4.15 m	13.62 ft
Fuel Tank Refill Capacity - Scraper	1400 l	370 gal (US)
Scraper Capacity - Struck	18.3 m³	24 yd³
Rated Load	37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)	37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)

Engine

Emissions	Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.	Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Flywheel Power - Tractor	425 kW	570 hp
Rated Engine RPM - Tractor	1900 r/min	1900 r/min
Engine Model - Scraper	Cat C9.3 ACERT	Cat C9.3 ACERT
Rated Engine RPM - Scraper	2150 r/min	2150 r/min
Flywheel Power - Scraper	216 kW	290 hp
Engine Model - Tractor	Cat C18	Cat C18

Tractor Engine

Flywheel Power - Tractor/Scraper	425 kW	570 hp

Scraper Bowl

Scraper Capacity - Heaped	26 m³	34 yd³

Transmission

Top Speed - Loaded	55.8 km/h	34.7 mile/h

Service Refill Capacities

Crankcase - Scraper	24.5 l	6.5 gal (US)
Transmission System - Scraper	49 l	12.9 gal (US)
Crankcase - Tractor	52 l	13.7 gal (US)
Transmission System - Tractor	110 l	29 gal (US)
Hydraulic System	142 l	37.5 gal (US)
Cooling System - Tractor	75 l	19.8 gal (US)
Fuel Tank	1400 l	370 gal (US)
Cooling System - Scraper	61 l	16.1 gal (US)

Dimensions

Front of Tractor to Front Axle	3612 mm	142.2 in
Axle to Vertical Hitch Pin	509 mm	20 in
Wheel Base	8808 mm	346.8 in
Rear Axle - Rear of Machine	2292 mm	90.2 in
Width - Rear Tire Centers	2462 mm	96.9 in
Width - Inside of Bowl	3404 mm	134 in
Height - Scraper Blade Maximum	510 mm	20 in
Extended Push Block (Push-Pull)	2744 mm	108 in
Width - Outside Rear Tires	3636 mm	143.2 in
Length - Maximum (Push-Pull)	16640 mm	655.1 in
Width - Overall Machine	3937 mm	155 in
Width - Tractor	3499 mm	137.8 in
Length - Overall Machine - Standard	15164 mm	597 in
Height - Top of Cab	3733 mm	147 in
Ground Clearance - Tractor	664 mm	26.1 in
Height - Overall Shipping	4145 mm	163.2 in

Non Push-Pull

Overall Length	15.04 m	49.34 ft
Operating Weight - Empty	52140 kg	114950 lb

Push-Pull

Operating Weight - Empty	54005 kg	119060 lb
Overall Length - With Bail Down	16.64 m	54.59 ft

Cab

ROPS/FOPS	ROPS/FOPS meet “ISO Standards.”	ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).	The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).

Safety Criteria Compliance Standards

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

Travel Speeds - Runout

Transmission Gear - Reverse	9.9 km/h	6.2 mile/h
Transmission Gear - Seventh	41.95 km/h	25.7 mile/h
Transmission Gear - First	5.5 km/h	3.4 mile/h
Transmission Gear - Third	12.4 km/h	7.7 mile/h
Transmission Gear - Eighth	55.8 km/h	34.7 mile/h
Transmission Gear - Second	10.0 km/h	6.2 mile/h
Transmission Gear - Fourth	16.9 km/h	10.5 mile/h
Transmission Gear - Fifth	22.7 km/h	14.1 mile/h
Transmission Gear - Sixth	30.6 km/h	19.0 mile/h

Implement Cycle Times

Ejector Retract	8.5 s	8.5 s
Bowl Lower	3.5 s	3.5 s
Bail Raise	1.5 s	1.5 s
Apron Lower	3.8 s	3.8 s
Bail Lower	2.1 s	2.1 s
Ejector Extend	8.5 s	8.5 s
Apron Raise	4.0 s	4.0 s
Bowl Raise	3.5 s	3.5 s

Features

Be More Productive

Work in Comfort

Designed for Safety

Easy to Operate

Integrated Cat Technologies

Execute Efficiency

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 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

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.

Downloads

637K Product Brochure Download

637 Key Features (Global)Download

637 Technical Specifications (Global)Download

Overview

General

UNITS:

Metric

Imperial

Top Speed - Loaded	55.8 km/h	34.7 mile/h
180° Curb-to-Curb Turning Width	12.23 m	40.12 ft
Scraper Capacity - Heaped	26 m³	34 yd³
Overall Width	3.94 m	12.93 ft
Maximum Depth of Spread	535 mm	21.1 in
Maximum Depth of Cut	450 mm	17.7 in
Width - Cut	3.51 m	11.50 ft
Tires - Tractor	37.25R35**E3	37.25R35**E3
Tires - Scraper	37.25R35**E3	37.25R35**E3
Overall Shipping Height	4.15 m	13.62 ft
Fuel Tank Refill Capacity - Scraper	1400 l	370 gal (US)
Scraper Capacity - Struck	18.3 m³	24 yd³
Rated Load	37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)	37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)

Engine

Emissions	Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.	Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Flywheel Power - Tractor	425 kW	570 hp
Rated Engine RPM - Tractor	1900 r/min	1900 r/min
Engine Model - Scraper	Cat C9.3 ACERT	Cat C9.3 ACERT
Rated Engine RPM - Scraper	2150 r/min	2150 r/min
Flywheel Power - Scraper	216 kW	290 hp
Engine Model - Tractor	Cat C18	Cat C18

Tractor Engine

Flywheel Power - Tractor/Scraper	425 kW	570 hp

Scraper Bowl

Scraper Capacity - Heaped	26 m³	34 yd³

Transmission

Top Speed - Loaded	55.8 km/h	34.7 mile/h

Service Refill Capacities

Crankcase - Scraper	24.5 l	6.5 gal (US)
Transmission System - Scraper	49 l	12.9 gal (US)
Crankcase - Tractor	52 l	13.7 gal (US)
Transmission System - Tractor	110 l	29 gal (US)
Hydraulic System	142 l	37.5 gal (US)
Cooling System - Tractor	75 l	19.8 gal (US)
Fuel Tank	1400 l	370 gal (US)
Cooling System - Scraper	61 l	16.1 gal (US)

Dimensions

Front of Tractor to Front Axle	3612 mm	142.2 in
Axle to Vertical Hitch Pin	509 mm	20 in
Wheel Base	8808 mm	346.8 in
Rear Axle - Rear of Machine	2292 mm	90.2 in
Width - Rear Tire Centers	2462 mm	96.9 in
Width - Inside of Bowl	3404 mm	134 in
Height - Scraper Blade Maximum	510 mm	20 in
Extended Push Block (Push-Pull)	2744 mm	108 in
Width - Outside Rear Tires	3636 mm	143.2 in
Length - Maximum (Push-Pull)	16640 mm	655.1 in
Width - Overall Machine	3937 mm	155 in
Width - Tractor	3499 mm	137.8 in
Length - Overall Machine - Standard	15164 mm	597 in
Height - Top of Cab	3733 mm	147 in
Ground Clearance - Tractor	664 mm	26.1 in
Height - Overall Shipping	4145 mm	163.2 in

Non Push-Pull

Overall Length	15.04 m	49.34 ft
Operating Weight - Empty	52140 kg	114950 lb

Push-Pull

Operating Weight - Empty	54005 kg	119060 lb
Overall Length - With Bail Down	16.64 m	54.59 ft

Cab

ROPS/FOPS	ROPS/FOPS meet “ISO Standards.”	ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).	The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).

Safety Criteria Compliance Standards

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

Travel Speeds - Runout

Transmission Gear - Reverse	9.9 km/h	6.2 mile/h
Transmission Gear - Seventh	41.95 km/h	25.7 mile/h
Transmission Gear - First	5.5 km/h	3.4 mile/h
Transmission Gear - Third	12.4 km/h	7.7 mile/h
Transmission Gear - Eighth	55.8 km/h	34.7 mile/h
Transmission Gear - Second	10.0 km/h	6.2 mile/h
Transmission Gear - Fourth	16.9 km/h	10.5 mile/h
Transmission Gear - Fifth	22.7 km/h	14.1 mile/h
Transmission Gear - Sixth	30.6 km/h	19.0 mile/h

Implement Cycle Times

Ejector Retract	8.5 s	8.5 s
Bowl Lower	3.5 s	3.5 s
Bail Raise	1.5 s	1.5 s
Apron Lower	3.8 s	3.8 s
Bail Lower	2.1 s	2.1 s
Ejector Extend	8.5 s	8.5 s
Apron Raise	4.0 s	4.0 s
Bowl Raise	3.5 s	3.5 s

Features

Be More Productive

Work in Comfort

Designed for Safety

Easy to Operate

Integrated Cat Technologies

Execute Efficiency

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 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

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)