623K

Scraper Capacity - Heaped: 23 yd³ / 17.6 m³
Top Speed - Loaded: 33.5 mile/h / 53.9 km/h
Height - Overall Shipping: 158.9 in / 4037 mm

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.

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623K Product Brochure

Specifications
Equipment
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General
Top Speed - Loaded	33.5 mile/h / 53.9 km/h
Number of Flights	15
Operating Weight - Empty	88061 lb / 39937 kg
180° Curb-to-Curb Turning Width	38.71 ft / 11.8 m
Overall Shipping Height	12.37 ft / 3.77 m
Overall Length	45.18 ft / 13.77 m
Maximum Depth of Spread	18.3 in / 465 mm
Fuel Tank Refill Capacity - Scraper	201 gal (US) / 763 l
Scraper Capacity - Struck	18.8 yd³ / 14.4 m³
Scraper Capacity - Heaped	23 yd³ / 17.6 m³
Rated Load	25 038 kg (55,200 lb); 25.1 tonnes (27.6 tons)
Tires - Tractor Drive	33.25R29**E3
Width - Cut	10.3 ft / 3.14 m
Elevator Flight Spacing	20 in / 520 mm
Overall Width	11.71 ft / 3.57 m
Maximum Depth of Cut	10.3 in / 262 mm
Maximum Floor Opening	4.4 ft / 1.34 m
Tires - Scraper	33.25R29**E3

Engine
Flywheel Power - Tractor/Scraper	304 kW (407 hp)
Rated Engine RPM	2000 r/min
Engine Model	Cat C13
Flywheel Power - Tractor	407 hp / 304 kW
Note	C13 engine emits equivalent to U.S. EPA Tier 2/EU Stage II or U.S. EPA Tier 3/EU Stage III.

Transmission
Top Speed - Loaded	33.5 mile/h / 53.9 km/h

Scraper Bowl
Scraper Capacity - Heaped	23 yd³ / 17.6 m³

Service Refill Capacities
Fuel Tank	216.09 gal (US) / 818 l
Crankcase	8.08 gal (US) / 30.58 l
Cooling System	11.89 gal (US) / 45 l
Hydraulic System	21.926 gal (US) / 83 l
Transmission System	24.76 gal (US) / 93 l

Dimensions
Height - Overall Shipping	158.9 in / 4037 mm
Length - Overall Machine	542 in / 13767 mm
Width - Overall Machine	141.1 in / 3585 mm
Height - Top of Cab	142.6 in / 3621 mm
Height - Scraper Blade Maximum	20.5 in / 520 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
Front of Tractor to Front Axle	122.8 in / 3119 mm
Wheel Base	329.5 in / 8370 mm
Rear Axle - Rear of Machine	89.7 in / 2278 mm
Ground Clearance - Tractor	21.9 in / 557 mm
Width - Overall Machine - Ladder Down	149.2 in / 3790 mm
Axle to Vertical Hitch Pin	17 in / 432 mm
Width - Rear Tire Centers	90.2 in / 2290 mm
Height - Top of Elevator	148.3 in / 3768 mm

Cab
ROPS/FOPS	Meets ISO standards
Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).

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

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

Implement Cycle Times
Ejector Retract	9.7 s
Bowl Raise	3 s
Bowl Lower	3.5 s
Ejector Extend	6.45 s

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
- Throttle lock
- Parking , hydraulic released, spring applied
- Primary and secondary, wet disc, hydraulic
TRANSMISSION
- 8-speed planetary power shift
- APECS software
- Transmission hold
- Ground speed control
- Machine speed limit
- Programmable top gear selection
- Differential lock
- Standard tire spin reduction
- Differential lock protection
- Guard, power train
- ECPC control
ELECTRICAL - TRACTOR
- Alternator, 150 Amp
- Batteries (4), 12V, 1,000 CCA, maintenance free, high output
- Electrical system, 24V
- Starting/charging receptacle
LIGHTING SYSTEM - TRACTOR
- Headlights, halogen
- Halogen sdie vision (2)
- Bowl (1)
- LED Floodlights
- Turn Signals with hazard Function
- Cutting Edge (2)
ELECTRICAL - SCRAPER
- Alarm, backup
LIGHTING SYSTEM - SCRAPER
- Brake lights, LED
- Trun signals with hazard function, LED
KEYPAD SWITCHES
- Throttle lock
- Retarding level select
- Hazard lights
- Wipers/washers
- Work lights on/off
- Information mode on Messenger Display
SAFETY TAB ROCKER SWITCHES
- Regeneration control
- Parking Brake
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
- 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
- Cushion hitch
- Secondary steering
- Bail down
- Park brake
- Action lamp
- Transmission hold
- Engine oil temperature
- High beam lights
- Fuel level
- Hydraulic oil temperature
- Apron float
- Differential lock (1)
- Gear selection
- Throttle lock
- Ejector auto
- System voltage
- Brake system
- Implement lockout
- Regeneration required
- Engine speed, rpm
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
BOWL
- 17.6 m³ (23 yd³), heaped
- 13.5 m? (17.6 yd?), struck
OTHER STANDARD EQUIPMENT - SCRAPER
- Vandalism locks
- Elevator with 15 flights
- Hydraulic position sensing cylinders (bowl lift and apron)

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
- Product Link
- Cat Grade Control with Load Assist
WORK LIGHT ATTACHMENTS
- HID work lights
AMBIENT CAPABILITY ARRANGEMENTS
- Cooling, high ambient HRC
- Extended Life Coolant, -50? C (-58? F)
- Cooling, high ambient LRC
- Cooling, low ambient LRC
OTHER ATTACHMENTS
- Camera arrangement - WAVS
- Steering lock - external
- Cab beacon
- Air horn
- Air horn and beacon
- Fender, scraper
- Wiring group
- Year of manufacture plate
SERVICE INSTRUCTIONS
- Film arrangement - U.S. (ANSI)
- Film arrangement - International (ISO)

Grade

<p>Cat® Grade technologies combine digital design data, in-cab guidance, and automatic controls to enhance grading accuracy, reduce rework, and lower costs related to production earthmoving and rough, fine and finish grade applications.</p><p>Whether you're working on simple planes and slopes or complex contour designs, Grade technologies enable you to boost grading efficiency by as much as 50%, helping you get more work done – in less time and at a lower cost – than ever before.</p>

Model
Cat Grade Control for Wheel Tractor-Scrapers

Equipment Management

Cat® Equipment Management gives you access to the data you need to keep your equipment on the job site and earning money. You can track equipment location and hours, monitor machine use and health, then take informed action that will keep your operation running smoothly, efficiently and profitably.

Model
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Cat® Inspect

Payload

Cat® Payload technologies provide on-the-go load weighing to assist operators with hitting precise load targets every time, helping to reduce load times, optimize loading efficiency and increase jobsite productivity. Operators can track daily productivity from the cab, with quick access to information such as truck target weights, loads and cycle counts, material movement and daily totals. When combined with Cat Link technologies, detailed data can be accessed remotely to manage overall operations and keep production targets on track.

Model
Cat Payload Estimator for Scrapers

Assist

On-board Cat® Technology gives you the edge. Operators of all experience levels will dig, load, and grade with more confidence, speed, and accuracy. The result? Better productivity and lower costs.

Model
Cat Sequence Assist for Wheel Tractor-Scrapers
Cat Load Assist for Wheel Tractor-Scrapers

Productivity

VisionLink® Productivity is a cloud-based application that is scalable to any size operation. Detailed Cat Production Measurement data, machine data and jobsite data are transmitted from the onboard Cat Product Link™ device directly to the web platform, for you to access wherever you are, via your mobile, tablet or desktop device.

Model
VisionLink™ Productivity

Technology Kits

Caterpillar provides solutions to help customers in any industry improve efficiency and enhance safety.

Model
Cat® Grade Connectivity for Grade with 3D