621 Wheel Tractor-Scraper
Our wheel tractor-scrapers have long been considered the basic method of moving volumes of material, and the Cat® 621 Wheel Tractor-Scraper is no exception. Known for its ability to be push-loaded and high travel speeds, it’s always an earthmover’s first tool of choice when working in challenging load areas. With an open bowl and a single engine, this machine is designed to handle a wide range of material types ranging from sand to ripped rock 609.6 mm (24 “) or less in size.
Tractor Engine
Flywheel Power - Tractor/Scraper
Scraper Bowl
Scraper Capacity - Heaped
Transmission
Top Speed - Loaded
Dimensions
Width - Overall Machine
Width - Tractor
Width - Inside of Bowl
Width - Outside Rear Tires
Height - Overall Shipping
Height - Top of Cab
Ground Clearance - Tractor
Front of Tractor to Front Axle
Axle to Vertical Hitch Pin
Height - Scraper Blade Maximum
Wheel Base
Rear Axle - Rear of Machine
Length - Overall Machine - Standard
Length - Maximum (Push-Pull)
Width - Overall Machine - Ladder Down
Width - Rear Tire Centers
General
Overall Shipping Height
Overall Width
Scraper Capacity - Heaped
Fuel Tank Refill Capacity - Scraper
Tires - Scraper
Width - Cut
Maximum Depth of Spread
Top Speed - Loaded
Rated Load
180° Curb-to-Curb Turning Width
Scraper Capacity - Struck
Maximum Depth of Cut
Tires - Tractor Drive
Engine
Engine Model - Tractor
Flywheel Power - Tractor
Note
Rated Engine RPM - Tractor
Service Refill Capacities
Hydraulic System
Crankcase
Transmission System
Cooling System
Fuel Tank
Diesel Exhaust Fluid
Non Push-Pull
Operating Weight - Empty
Overall Length
Push-Pull
Overall Length - With Bail Down
Operating Weight - Empty
Cab
Exterior Sound Level
ROPS/FOPS
Safety Criteria Compliance Standards
Rollover Protection Structure (ROPS)
Brakes
Reverse Alarm
Falling Object Protective Structure (FOPS)
Seat Belt
Steering System
Travel Speeds - Runout
Transmission Gear - Seventh
Transmission Gear - Fifth
Transmission Gear - First
Transmission Gear - Sixth
Transmission Gear - Second
Transmission Gear - Third
Transmission Gear - Fourth
Transmission Gear - Eighth
Transmission Gear - Reverse
Implement Cycle Times
Apron Raise
Bowl Raise
Ejector Retract
Bowl Lower
Apron Lower
Ejector Extend
Bail Lower
Bail Raise
Standard Equipment:
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- Note
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- Standard and optional equipment may vary. Consult your Cat dealer for details.
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- Power Train - Tractor
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- Cat C13 engine with MEUI™
- 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
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- Power Train - Scraper
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- Braking system: - Primary and secondary, wet disc, hydraulic
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- Electrical - Tractor
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- 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
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- Electrical - Scraper
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- Alarm, backup
- Lighting system: - Brake lights, LED - Turn signals with hazard function, LED
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- Operator Environment - Tractor
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- 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 - 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
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- Fluids
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- Extended Life Coolant to -37° C (-34° F)
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- Other Standard Equipment - Tractor
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- 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
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- Other Standard Equipment - Scraper
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- Bowl: - 18.4 m3 (24 yd3), heaped - 14.1 m3 (18.4 yd3), struck
- Vandalism locks
- Hydraulic position sensing cylinders (bowl lift and apron)
Optional Equipment:
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- Note
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- Standard and optional equipment may vary. Consult your Cat dealer for details.
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- Steering Arrangements
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- Secondary Steering Arrangement
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- Integrated Technologies
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- Sequence Assist Arrangement
- Load Assist
- Cat Grade Control with Load Assist
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- Work Light Attachments
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- HID work lights
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- Ambient Capability Arrangements
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- Cooling, high ambient HRC
- Cooling, low ambient HRC
- Cooling, high ambient LRC
- Cooling, low ambient LRC
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- Other Attachments
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- Camera arrangement - WAVS
- Steering lock - external
- Cab beacon
- Air horn
- Air horn and beacon
- Fender, scraper
- Guard, overflow
- Wiring group
- Year of manufacture plate
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- Service Instructions
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- Film arrangement - U.S. (ANSI)
- Film arrangement - International (ISO)
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