Open Bowl Scrapers 621

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Key Specs

Flywheel Power - Tractor/Scraper: 304 kW (407 hp); 304 kW (407 hp)

Scraper Capacity - Heaped: 24 yd³; 18.4 m³

Overall Width: 11.8 ft; 3.57 m

621
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Overview

Redefining your profit potential

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

Benefits

Increased Comfort

Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

Improved Productivity

Improvements in fuel efficiency and responsive APECS transmission controls deliver more productivity in most applications

Additional Safety

New safety features help operators be more productive and work more efficiently all day long

Features At A Glance

Displaying 1-6 of 6

Be More Productive

Smart mode helps reduce fuel consumption by automatically matching the correct gear and hydraulic power to digging conditions.
Advanced Productivity Electronic Control System (APECS) allows the engine and transmission to communicate on a high level. This communication allows the machine to better utilize the power and torque the engine is producing. The net result is moving more material.
Use Ground Speed Control to set the desired top speed and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn.
The machine speed limit feature allows the machine to maintain a set top speed instead of relying on the top gear selector.
Auto-stall assists in quickly bringing the transmission to an operating temperature at startup when the machine is working in a cold climate region.
Enhance productivity through the usage of Cat Payload with Sequence Assist.
Cat Payload for scrapers is an earthmoving solution for optimal payload and jobsite efficiency. Cat Payload achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with Sequence Assist, which provides increased productivity with fewer operator effort.

WORK IN COMFORT

Work in Comfort

Reduce up to 14 individual operator commands per cycle with
Sequence Assist (optional attachment).
• Steer with less effort using the newly designed high-pressure steering
system.
Enjoy interior improvements and a more ergonomic work environment
with a 21% larger cab than the G Series cab.
Intuitive, ergonomic controls keep operators focused on their work.
Maintain desired cab temperature with automatic temperature control
.

DESIGNED FOR SAFETY

Designed for Safety

Enhance an operator’s awareness of site surroundings with the
Work Area Vision System (WAVS).
The seat belt indicator provides visual and audible alerts when the seat
belt is not in use.
The Advanced Cushion Hitch allows the cushion hitch to prevent endstroke by predicting endstroke events and managing the rate of dampening, resulting in reduced hitch maintenance and improved operator ride in rough conditions.

EASY TO OPERATE

Easy to Operate

The spacious cab features easy, intuitive controls and excellent visibility
. The cab provides a comfortable working environment for all-day
operations.
Cat Advanced Ride Management (ARM) seat suspension reduces
endstroke movement of the load cylinder for a smoother ride.
Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine's speed by canceling the throttle command and engaging the engine compression brake.

INTERGRATED CAT TECHNOLOGIES

Integrated Cat Technologies

Monitor, manage, and enhance job site operations.
Hit target grade faster and more accurately with Cat Grade technologies. Finish jobs in fewer passes and with less operator effort, saving you time and helping to increase profit.
Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).
Access information anytime, anywhere with VisionLink® – use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your
jobsite.
Shorten the learning curve for inexperienced operators with
Sequence Assist and Load Assist (included with Cat Grade
attachment).

EXECUTE EFFICIENCY

Execute Efficiency

The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.
The Cat C13 tractor engine meets U.S. EPA Tier 4 Final/EU Stage
V emission standards, or noncertified configurations that are
equivalent to U.S. EPA Tier 2, or to U.S. EPA Tier 3/EU Stage IIIA, contributing to lower fuel consumption.
Using draft-arm overflow guards, diverts material away from the bowl, preventing material from getting caught between the draft arms and the bowl sides.
Cat Grade Control (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.

Smart mode helps reduce fuel consumption by automatically matching the correct gear and hydraulic power to digging conditions.
Advanced Productivity Electronic Control System (APECS) allows the engine and transmission to communicate on a high level. This communication allows the machine to better utilize the power and torque the engine is producing. The net result is moving more material.
Use Ground Speed Control to set the desired top speed and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn.
The machine speed limit feature allows the machine to maintain a set top speed instead of relying on the top gear selector.
Auto-stall assists in quickly bringing the transmission to an operating temperature at startup when the machine is working in a cold climate region.
Enhance productivity through the usage of Cat Payload with Sequence Assist.
Cat Payload for scrapers is an earthmoving solution for optimal payload and jobsite efficiency. Cat Payload achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with Sequence Assist, which provides increased productivity with fewer operator effort.

Reduce up to 14 individual operator commands per cycle with
Sequence Assist (optional attachment).
• Steer with less effort using the newly designed high-pressure steering
system.
Enjoy interior improvements and a more ergonomic work environment
with a 21% larger cab than the G Series cab.
Intuitive, ergonomic controls keep operators focused on their work.
Maintain desired cab temperature with automatic temperature control
.

Enhance an operator’s awareness of site surroundings with the
Work Area Vision System (WAVS).
The seat belt indicator provides visual and audible alerts when the seat
belt is not in use.
The Advanced Cushion Hitch allows the cushion hitch to prevent endstroke by predicting endstroke events and managing the rate of dampening, resulting in reduced hitch maintenance and improved operator ride in rough conditions.

The spacious cab features easy, intuitive controls and excellent visibility
. The cab provides a comfortable working environment for all-day
operations.
Cat Advanced Ride Management (ARM) seat suspension reduces
endstroke movement of the load cylinder for a smoother ride.
Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine's speed by canceling the throttle command and engaging the engine compression brake.

Monitor, manage, and enhance job site operations.
Hit target grade faster and more accurately with Cat Grade technologies. Finish jobs in fewer passes and with less operator effort, saving you time and helping to increase profit.
Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).
Access information anytime, anywhere with VisionLink® – use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your
jobsite.
Shorten the learning curve for inexperienced operators with
Sequence Assist and Load Assist (included with Cat Grade
attachment).

The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.
The Cat C13 tractor engine meets U.S. EPA Tier 4 Final/EU Stage
V emission standards, or noncertified configurations that are
equivalent to U.S. EPA Tier 2, or to U.S. EPA Tier 3/EU Stage IIIA, contributing to lower fuel consumption.
Using draft-arm overflow guards, diverts material away from the bowl, preventing material from getting caught between the draft arms and the bowl sides.
Cat Grade Control (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.

Specifications Standard Equipment Optional Equipment

Product Specifications for 621

Tractor Engine

Flywheel Power - Tractor/Scraper

304 kW (407 hp) 304 kW (407 hp)

Scraper Bowl

Scraper Capacity - Heaped

24 yd³ 18.4 m³

General

Overall Width	11.8 ft 3.57 m
Overall Shipping Height	13.22 ft 4.03 m
Scraper Capacity - Struck	17.1 yd³ 13 m³
Scraper Capacity - Heaped	24 yd³ 18.4 m³
Rated Load	26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons) 26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons)
Width - Cut	10.4 ft 3.14 m
Maximum Depth of Cut	12.4 in 315 mm
Maximum Depth of Spread	21.3 in 540 mm
Top Speed - Loaded	33.5 mile/h 53.9 km/h
180° Curb-to-Curb Turning Width	38.71 ft 11.8 m
Tires - Scraper	33.25R29E3 33.25R29E3
Tires - Tractor Drive	33.25R29E3 33.25R29E3
Fuel Tank Refill Capacity - Scraper	201 gal (US) 763 l

Non Push-Pull

Operating Weight - Empty	79774 lb 36385 kg
Overall Length	45.10 ft 14.02 m

Push-Pull

Operating Weight - Empty	83138 lb 37711 kg
Overall Length - With Bail Down	51.1 ft 15.58 m

Dimensions

Width - Overall Machine	141.1 in 3585 mm
Width - Tractor	133.1 in 3381 mm
Width - Inside of Bowl	120 in 3048 mm
Width - Outside Rear Tires	128.9 in 3275 mm
Height - Overall Shipping	158.6 in 4029 mm
Height - Top of Cab	142.2 in 3612 mm
Ground Clearance - Tractor	21.9 in 557 mm
Front of Tractor to Front Axle	122.8 in 3119 mm
Axle to Vertical Hitch Pin	21.3 in 540 mm
Height - Scraper Blade Maximum	21.3 in 540 mm
Wheel Base	314.9 in 7998 mm
Rear Axle - Rear of Machine	114.1 in 2898 mm
Length - Maximum (Push-Pull)	613.2 in 15576 mm
Width - Overall Machine - Ladder Down	149.2 in 3790 mm
Length - Overall Machine - Standard	551.8 in 14015 mm
Width - Rear Tire Centers	90.2 in 2290 mm

Transmission

1 Forward	3.1 mile/h 5 km/h
2 Forward	5.5 mile/h 8.9 km/h
3 Forward	7.5 mile/h 12.1 km/h
4 Forward	10.1 mile/h 16.3 km/h
5 Forward	13.6 mile/h 21.9 km/h
6 Forward	18.4 mile/h 29.6 km/h
7 Forward	24.8 mile/h 39.9 km/h
8 Forward	33.5 mile/h 53.9 km/h
Reverse	5.7 mile/h 9.2 km/h
Top Speed - Loaded	33.5 mile/h 53.9 km/h

Service Refill Capacities - Tractor

Final Drive - Each	5 Gal 19 l
Windshield Washer	1.3 Gal 5 l

Service Refill Capacities

Cooling System - Scraper	8.7 Gal 33 l
Crankcase	9.7 gal (US) 37 l
Transmission System	25.5 gal (US) 97 l
Cooling System	11 gal (US) 42 l
Diesel Exhaust Fluid (DEF)	8.1 Gal 30.5 l
Fuel Tank	216.01 gal (US) 818 l
Hydraulic System	21.926 gal (US) 83 l

Engine

Rated Engine RPM - Tractor	2000 r/min 2000 r/min
Engine Model - Tractor	Cat® C13 Cat® C13
Flywheel Power - Tractor	407 hp 304 kW
Note	Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA. Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA.

Cab

ROPS/FOPS	Meets ISO standards Meets ISO standards
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A). The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A).

Safety Criteria Compliance Standards

Reverse Alarm	ISO 9533:2010 ISO 9533:2010
Falling Object Protective Structure (FOPS)	ISO 3449:2005 Level II ISO 3449:2005 Level II
Steering System	ISO 5010:2007 ISO 5010:2007
Rollover Protection Structure (ROPS)	ISO 3471:2008 for up to 17 084 kg (37,664 lb) ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Seat Belt	SAE J386:JUN1985 SAE J386:JUN1985
Brakes	ISO 3450:2011 ISO 3450:2011

Travel Speeds - Runout

Transmission Gear - Reverse	5.7 mile/h 9.2 km/h
Transmission Gear - Third	7.5 mile/h 12.1 km/h
Transmission Gear - First	3.1 mile/h 5 km/h
Transmission Gear - Seventh	24.8 mile/h 39.9 km/h
Transmission Gear - Fourth	10.1 mile/h 16.3 km/h
Transmission Gear - Sixth	18.4 mile/h 29.6 km/h
Transmission Gear - Fifth	13.6 mile/h 21.9 km/h
Transmission Gear - Second	5.5 mile/h 8.9 km/h
Transmission Gear - Eighth	33.5 mile/h 53.9 km/h

Implement Cycle Times

Bail Lower	3.2 s 3.2 s
Apron Lower	3.8 s 3.8 s
Bowl Lower	3.5 s 3.5 s
Bail Raise	1.8 s 1.8 s
Ejector Retract	6.7 s 6.7 s
Ejector Extend	5.2 s 5.2 s
Apron Raise	3 s 3 s
Bowl Raise	3.3 s 3.3 s

621 Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

POWER TRAIN – TRACTOR

Cat® C13

Cat engine brake

Electric start, 24 Volt

Air cleaner, dry type with precleaner

Fan, hydraulic

Ground level engine shutdown

Radiator, aluminum unit core, 9 fins per inch

Guard, crankcase

Muffler (only for less or non-regulated regions engine arrangement only)

Starting aid, ether

Braking system:
– Primary and secondary, wet disc, hydraulic
– 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

Braking system:
– Primary and secondary, wet disc, hydraulic

ELECTRICAL – TRACTOR

Alternator, 150 Amp

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

Electrical system, 24V

Lighting system:
– Headlights, halogen
– Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)

Starting/charging receptacle

ELECTRICAL – SCRAPER

Alarm, backup

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
– 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

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 pin, front

Vandalism locks

Heater, engine coolant 120V

OTHER STANDARD EQUIPMENT – SCRAPER

Bowl
– 18.4 m³ (24 yd³), heaped
– 14.1 m³ (18.4 yd³), struck

Vandalism locks

Hydraulic position sensing cylinders (bowl lift and apron)

621 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

Load Assist

Cat Grade Control with Load Assist

OTHER ATTACHMENTS

Camera arrangement – WAVS

Steering lock – external

Cab beacon

Air horn

Air horn and beacon

Fender, scraper

Guard, overflow

Wiring group

Year of manufacture plate

WORK LIGHT ATTACHMENTS

HID work lights

AMBIENT CAPABILITY ARRANGEMENTS

Cooling, high ambient HRC

Cooling, low ambient HRC

Cooling, high ambient LRC

Cooling, low ambient LRC

SERVICE INSTRUCTIONS

Film arrangement – U.S. (ANSI)

Film arrangement – International (ISO)

Product Specifications for 621

Download Print

Tractor Engine

Flywheel Power - Tractor/Scraper

304 kW (407 hp) 304 kW (407 hp)

Scraper Bowl

Scraper Capacity - Heaped

24 yd³ 18.4 m³

General

Overall Width	11.8 ft 3.57 m
Overall Shipping Height	13.22 ft 4.03 m
Scraper Capacity - Struck	17.1 yd³ 13 m³
Scraper Capacity - Heaped	24 yd³ 18.4 m³
Rated Load	26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons) 26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons)
Width - Cut	10.4 ft 3.14 m
Maximum Depth of Cut	12.4 in 315 mm
Maximum Depth of Spread	21.3 in 540 mm
Top Speed - Loaded	33.5 mile/h 53.9 km/h
180° Curb-to-Curb Turning Width	38.71 ft 11.8 m
Tires - Scraper	33.25R29E3 33.25R29E3
Tires - Tractor Drive	33.25R29E3 33.25R29E3
Fuel Tank Refill Capacity - Scraper	201 gal (US) 763 l

Non Push-Pull

Operating Weight - Empty	79774 lb 36385 kg
Overall Length	45.10 ft 14.02 m

Push-Pull

Operating Weight - Empty	83138 lb 37711 kg
Overall Length - With Bail Down	51.1 ft 15.58 m

Dimensions

Width - Overall Machine	141.1 in 3585 mm
Width - Tractor	133.1 in 3381 mm
Width - Inside of Bowl	120 in 3048 mm
Width - Outside Rear Tires	128.9 in 3275 mm
Height - Overall Shipping	158.6 in 4029 mm
Height - Top of Cab	142.2 in 3612 mm
Ground Clearance - Tractor	21.9 in 557 mm
Front of Tractor to Front Axle	122.8 in 3119 mm
Axle to Vertical Hitch Pin	21.3 in 540 mm
Height - Scraper Blade Maximum	21.3 in 540 mm
Wheel Base	314.9 in 7998 mm
Rear Axle - Rear of Machine	114.1 in 2898 mm
Length - Maximum (Push-Pull)	613.2 in 15576 mm
Width - Overall Machine - Ladder Down	149.2 in 3790 mm
Length - Overall Machine - Standard	551.8 in 14015 mm
Width - Rear Tire Centers	90.2 in 2290 mm

Transmission

1 Forward	3.1 mile/h 5 km/h
2 Forward	5.5 mile/h 8.9 km/h
3 Forward	7.5 mile/h 12.1 km/h
4 Forward	10.1 mile/h 16.3 km/h
5 Forward	13.6 mile/h 21.9 km/h
6 Forward	18.4 mile/h 29.6 km/h
7 Forward	24.8 mile/h 39.9 km/h
8 Forward	33.5 mile/h 53.9 km/h
Reverse	5.7 mile/h 9.2 km/h
Top Speed - Loaded	33.5 mile/h 53.9 km/h

Service Refill Capacities - Tractor

Final Drive - Each	5 Gal 19 l
Windshield Washer	1.3 Gal 5 l

Service Refill Capacities

Cooling System - Scraper	8.7 Gal 33 l
Crankcase	9.7 gal (US) 37 l
Transmission System	25.5 gal (US) 97 l
Cooling System	11 gal (US) 42 l
Diesel Exhaust Fluid (DEF)	8.1 Gal 30.5 l
Fuel Tank	216.01 gal (US) 818 l
Hydraulic System	21.926 gal (US) 83 l

Engine

Rated Engine RPM - Tractor	2000 r/min 2000 r/min
Engine Model - Tractor	Cat® C13 Cat® C13
Flywheel Power - Tractor	407 hp 304 kW
Note	Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA. Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA.

Cab

ROPS/FOPS	Meets ISO standards Meets ISO standards
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A). The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A).

Safety Criteria Compliance Standards

Reverse Alarm	ISO 9533:2010 ISO 9533:2010
Falling Object Protective Structure (FOPS)	ISO 3449:2005 Level II ISO 3449:2005 Level II
Steering System	ISO 5010:2007 ISO 5010:2007
Rollover Protection Structure (ROPS)	ISO 3471:2008 for up to 17 084 kg (37,664 lb) ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Seat Belt	SAE J386:JUN1985 SAE J386:JUN1985
Brakes	ISO 3450:2011 ISO 3450:2011

Travel Speeds - Runout

Transmission Gear - Reverse	5.7 mile/h 9.2 km/h
Transmission Gear - Third	7.5 mile/h 12.1 km/h
Transmission Gear - First	3.1 mile/h 5 km/h
Transmission Gear - Seventh	24.8 mile/h 39.9 km/h
Transmission Gear - Fourth	10.1 mile/h 16.3 km/h
Transmission Gear - Sixth	18.4 mile/h 29.6 km/h
Transmission Gear - Fifth	13.6 mile/h 21.9 km/h
Transmission Gear - Second	5.5 mile/h 8.9 km/h
Transmission Gear - Eighth	33.5 mile/h 53.9 km/h

Implement Cycle Times

Bail Lower	3.2 s 3.2 s
Apron Lower	3.8 s 3.8 s
Bowl Lower	3.5 s 3.5 s
Bail Raise	1.8 s 1.8 s
Ejector Retract	6.7 s 6.7 s
Ejector Extend	5.2 s 5.2 s
Apron Raise	3 s 3 s
Bowl Raise	3.3 s 3.3 s

621 Standard Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

POWER TRAIN – TRACTOR

Cat® C13

Cat engine brake

Electric start, 24 Volt

Air cleaner, dry type with precleaner

Fan, hydraulic

Ground level engine shutdown

Radiator, aluminum unit core, 9 fins per inch

Guard, crankcase

Muffler (only for less or non-regulated regions engine arrangement only)

Starting aid, ether

Braking system:
– Primary and secondary, wet disc, hydraulic
– 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

Braking system:
– Primary and secondary, wet disc, hydraulic

ELECTRICAL – TRACTOR

Alternator, 150 Amp

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

Electrical system, 24V

Lighting system:
– Headlights, halogen
– Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)

Starting/charging receptacle

ELECTRICAL – SCRAPER

Alarm, backup

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
– 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

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 pin, front

Vandalism locks

Heater, engine coolant 120V

OTHER STANDARD EQUIPMENT – SCRAPER

Bowl
– 18.4 m³ (24 yd³), heaped
– 14.1 m³ (18.4 yd³), struck

Vandalism locks

Hydraulic position sensing cylinders (bowl lift and apron)

621 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

Load Assist

Cat Grade Control with Load Assist

OTHER ATTACHMENTS

Camera arrangement – WAVS

Steering lock – external

Cab beacon

Air horn

Air horn and beacon

Fender, scraper

Guard, overflow

Wiring group

Year of manufacture plate

WORK LIGHT ATTACHMENTS

HID work lights

AMBIENT CAPABILITY ARRANGEMENTS

Cooling, high ambient HRC

Cooling, low ambient HRC

Cooling, high ambient LRC

Cooling, low ambient LRC

SERVICE INSTRUCTIONS

Film arrangement – U.S. (ANSI)

Film arrangement – International (ISO)

See how 621 compares against frequently compared products.

Wheel Tractor-Scrapers

Selected

621

Flywheel Power - Tractor/Scraper: 304 kW (407 hp); 304 kW (407 hp)
Scraper Capacity - Heaped: 24 yd³; 18.4 m³
Overall Width: 11.8 ft; 3.57 m

Wheel Tractor-Scrapers

621

Flywheel Power - Tractor/Scraper: 304 kW (407 hp); 304 kW (407 hp)
Scraper Capacity - Heaped: 24 yd³; 18.4 m³
Top Speed - Loaded: 33.5 mile/h; 53.9 km/h

View Details

Wheel Tractor-Scrapers

627

Flywheel Power - Tractor/Scraper: 304 kW (407 hp)/216 kW (290 hp); 304 kW (407 hp)/216 kW (290 hp)
Scraper Capacity - Heaped: 24 yd³; 18.4 m³
Top Speed - Loaded: 33.5 mile/h; 53.9 km/h

View Details

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Wheel Tractor-Scraper K Series

Wheel Tractor-Scraper K Series Operator Testimonial

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