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621 Partial Scraper Partial Scrapers

Caterpillar offers partial wheel tractor-scraper power units designed for specialty machines that complement the traditional Cat® product line. These tractor-only configurations are available for purchase directly from Caterpillar OEM Solutions. They can be leveraged for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more. With improvements in productivity combined with enhancements in operator comfort and new safety features – Powered Access System and effective wet disc brakes – this machine offers high returns on time and investment.

621 Partial Scraper

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These tractor-only configurations are available for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more

Tractor Engine
Cat® C13
Flywheel Power - Tractor
407 hp
Top Speed - Loaded
33.5 mile/h
Brakes
ISO 3450:2011
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  • Specifications
  • Features
  • Standard Equipment

Specifications

Engine specifications
Tractor Engine Cat® C13
Flywheel Power - Tractor 304 kW
Note Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

Features

WORK IN COMFORT

  • Steer with less effort with the newly designed high-pressure steering system.
  • Enjoy interior improvements and a more ergonomic work environment.
  • Intuitive, ergonomic controls with multifunction display keep operators focused on their work.
  • Maintain desired cab temperature with automatic temperature control.

EASY TO OPERATE

  • Cat Advanced Ride Management (ARM) seat suspension reduces end stroke 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 speed by canceling the throttle command and engaging the engine compression brake.

BE MORE PRODUCTIVE

        
  • The Advanced Productivity Electronic Control System (APECS) allows the machine to better utilize engine power and torque.
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  • Set the desired top speed with Ground Speed Control, and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn in speed reduced areas.
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  • The Machine Speed Limit feature replaces Top Gear Selection.
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  • Auto-Stall assists in quickly bringing the transmission to an operating temperature at start-up when working in colder climates.

DESIGNED FOR SAFETY

  • Get in and out of the cab easier with the new powered access ladder system.
  • Enhance the operator’s awareness of site surroundings with the optional Work Area Vision System (WAVS).
  • Ground-level access to fuel fill and several maintenance points for easier and safer service.
  • Seat belt indicator provides visual and audible alerts when the seat belt is not in use.
  • Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear.
  • Secondary brakes engage automatically if service pressure drops
  • Parking Brake features a spring-applied, hydraulic pressure released mechanism that operates the service brakes.

SUPPORTED BY THE CAT DEALER NETWORK

  • Full support of Cat dealer and parts network.
  • Eligible for Equipment Protection Plans (EPP) & Customer Value Agreements (CVAs).

Standard Equipment

NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
POWERTRAIN
  • Cat® C13 engine with Mechanically Actuated Electronic Unit Injection (MEUI™)
  • Transmission: 8-speed planetary powershift, ECPC control, APECS software, programmable top gear selection, transmission hold, differential lock, guard - power train, ground speed control, machine speed limit
  • Cat engine brake
  • Electric start, 24V
  • Fan, hydraulic
ELECTRICAL
  • Alternator, 115 ampere
  • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
  • Electrical system, 24V
  • Lighting system: LED
  • Starting/charging receptacle
OPERATOR ENVIRONMENT
  • HVAC system, heat, AC, defrost
  • Thermostat control of HVAC system
  • Coat hook
  • Lunchbox platform with holding strap
  • Diagnostic connection (2)
FLUIDS
  • Extended life coolant to -37° C (-34° F)
OTHER EQUIPMENT
  • Advanced cushion hitch
  • Accumulators (cushion hitch and brake) with Canadian registration number (CRN)
  • Tow pin, front
  • Fenders, non-metallic
  • Heater, engine coolant 120V
OTHER ATTACHMENTS
  • Fast-fill fuel tank

Optional Equipment

OTHER ATTACHMENTS

  • Camera arrangement: Work Area Vision System (WAVS)
  • Cab beacon
  • Air horn
  • Air horn and beacon
  • Kingbolt housing