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Cat ® 621K
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Catalog excerpts

Cat ®  621K - 1

WHEEL TRACTOR-SCRAPER MAIN FEATURES AND BENEFITS: Tractor Serviceability Improvement – The filter bank located at the rear of the engine compartment has undergone improvements for serviceability by raising the filter bank up for easier access. Engine Over Speed Protection – In the event of an engine over speed situation, the compression brake or brakes will automatically engage with no operator input. The machine determines the over speed condition based on rate of acceleration and applies compression brakes automatically. Advanced Cushion Hitch – With similar technology as the Cat® Advanced Ride Management seat suspension, this software allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening. The desired result is improved hitch repair, reduced maintenance and improved operator ride in rough conditions. High Pressure Steering – 620K Series steering system design requires significantly less steering effort. The reduced steering effort will allow for decreased operator fatigue and a more efficient operator resulting in possible higher rates of production late in the work cycle. Draft Arm Overflow Guards – The open bowls now come standard with bowl side overflow guards to help prevent material from flowing over the bowl sides and falling onto the draft arms where material becomes lodged between the bowl side and draft arm resulting in decreased work cycle times. Auto Stall – In cold weather conditions the machine will use the Auto Stall feature to help warm up the transmission oil faster resulting in the machine shifting out of torque converter drive (2nd gear) faster than on previous models. Differential Lock Engagement Protection (Standard) – This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur. Cab Improved – The interior of the K Series cabs has improved the operator comfort and visibility by redesigning the dash area and key pad placement. Machine Speed Limit – This feature is designed to take the place of top gear selection. If the machine top speed needs to be limited the operator can select the top speed through the display or the top speed can be set in ET. This will allow the machine to find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases resulting in a lower engine load factor and lower fuel burn verses using top gear selection that required the machine to run at engine speeds at or close high idle. Ground Speed Control – Ground Speed Control sets the desired top speed by the operator if job site conditions or segment speed limits require a speed less than full run out. Machine Speed Limit is intended for use when top speed needs to be limited for longer durations and Ground Speed Control is intended for use when the top speed needs to be reduced for shorter segments or intermediate periods of time. The operator can set the desired top speed and the machine will find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases will result in a lower engine load factor and lower fuel burn verses top gear selection. Specifications General Data Fuel Tank Refill Capacity: Scraper Overall Width Overall Shipping Height Scraper Capacity: Struck Heaped Rated Load Width of Cut Maximum Depth of Cut Maximum Depth of Spread Top Speed (Loaded) 180° Curb-to-Curb Turning Width Tires: Tractor Drive Operating Weight (Empty) Overall Length Operating Weight (Empty) Overall Length (With Bail Down) Engine Engine Model: Tractor Rated Engine RPM: Tractor Flywheel Power: Tractor • Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.

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Cat ®  621K - 2

• The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A). Safety Criteria Compliance Standards Rollover Protection Structure (ROPS) Falling Object Protective Structure (FOPS) Brakes Steering System Seat Belt Reverse Alarm 1 Width – Overall Machine 2 Width – Overall Machine – Ladder Down 4 Width – Rear Tire Centers 5 Width – Inside of Bowl 6 Width – Outside Rear Tires 7 Height – Overall Shipping 9 Front of Tractor to Front Axle 10 Ground Clearance – Tractor 11 Axle to Vertical Hitch Pin 12 Height – Scraper Blade Maximum 3.0 seconds 3.5 seconds 2.95 seconds 3.8...

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Cat ®  621K - 3

STANDARD EQUIPMENT POWER TRAIN – TRACTOR Cat C13 ACERT 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 •...

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Cat ®  621K - 4

OPTIONAL ATTACHMENTS 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 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 OTHER ATTACHMENTS Year of manufacture plate SERVICE INSTRUCTIONS Film arrangement – U.S. (ANSI)...

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