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850K

850K

FEATURES & SPECS
6.8L Final Tier 4 (FT4)-certified engine
Dual-path hydrostatic transmission
Eco mode regulates engine rpm
Total Machine Control (TMC)

It's got your fingerprints all over it.

Ok, maybe not your fingerprints. But equipment owners and operators like you had a hand in perfecting the reimagined 850K. Armed with real-world experience, participants in our Customer Advocate Group (CAG) offered their expertise. We listened and responded with numerous K-Series enhancements including additional power and weight for increased productivity. An EPA Final Tier (4)/EU Stage IV diesel engine for work in nonattainment areas. Spacious redesigned cab that's noticeably quieter and more comfortable. And best-in-class serviceability features, such as an innovative easy-to-clean "V-cool" package. Add to those, the unsurpassed operating ease and maneuverability operators have come to expect from our crawlers, and the 850K is an obvious choice.

Specifications

850K
Rated Power205 hp @ 1800 rpm
Operating Weight42558 - 48005 lb
Track on Ground109 - 129 in

Features

KEY FEATURES

  • EPA Final Tier 4 (FT4)/EU Stage IV diesel delivers impressive power, torque, and drawbar pull for work in nonattainment areas and unsurpassed productivity.
  • Eco mode regulates engine rpm to burn up to 25-percent less fuel.
  • Dual-path hydrostatic transmission ensures smooth moves and allows you to push a full load through turns without losing material.
  • Total Machine Control (TMC) allows you to customize decelerator mode and response, forward/reverse groundspeed, steering modulation, and forward/reverse speed ratios for superb control.


ENGINE

  • Our FT4/Stage IV diesels meet emission regulations without sacrificing power or torque. We built on our Interim Tier 4 (IT4)/Stage IIIB solution to deliver the best combination of performance, efficiency, and reliability. This technology is simple, fluid efficient, fully integrated, and fully supported.
  • It employs field-proven cooled exhaust gas recirculation (EGR), easy-to-maintain high-uptime exhaust filters, and selective catalytic reduction (SCR).
  • V-cool design isolates coolers from dust and engine heat for increased efficiency and durability. Positioned behind the heavy-duty grille and fan, coolers are also less vulnerable. Reversing fan automatically back-blows the cooler cores at preset intervals. When conditions demand more frequent cleaning, simply press a button to actuate the reversing cycle.
  • Individually replaceable wet-sleeve engine-cylinder liners provide uniform engine cooling and long-term durability.


FILTERS

  • Exhaust filter operation and status are indicated with icons and on-screen displays. The diagnostic monitor also provides easy-to-understand messages that help speed troubleshooting.
  • Flush-fit bottom guards and tight-fitting side shields help keep trash out. Hood and side-shield perforations function as a “first filter,” further preventing entry of most debris. Anything that gets past the five-mm holes also passes through the cooler cores.
  • Vertical filters allow quick, no-spill changes. Engine, hydraulics, and transmission utilize a common oil, further simplifying service. Available severe-duty fuel filter provides an extra degree of filtration. Includes a heated water separator for cold-weather service.


HYDRAULICS

  • Sealed hydraulic and hydrostatic reservoirs are separate, eliminating any possibility of cross-contamination.
  • Accessible, clean-hose routing and Cordora® sleeve protection for cylinder lines to guard against accidental damage on the jobsite.
  • When you order your dozer grade-control ready, our “open-architecture” design makes adding a grade-control system as easy as plugging in the components, calibrating, and going to work, whether your preference be Trimble, Leica, or a factory-installed Topcon 3D-MC2 system.


CAB COMFORT

  • Standard high-back air-suspension seat and optional deluxe heated and leather-bolstered lower cushion adjust multiple ways for daylong comfort and support. Arm- and footrests also adjust. Operators will find plenty of space to stow beverages, a cooler, and other carry-ons.
  • Cab-forward design provides a commanding view behind, below, and beyond the blade. Side and rear visibility is also unobstructed.
  • The in-dash compartment is ideal for permanent placement of a grade-control monitor or as a lockable compartment for storing.
  • Overhead radio and storage console includes a 12-volt electrical outlet for powering a cell phone or an iPod®.


EASE OF CONTROL

  • Ergonomically correct joystick provides intuitive, low-effort control of steering, direction, and ground speed. It’s detented so it doesn’t require an operator’s constant touch or attention, and employs a thumb-actuated travel-speed control switch.
  • Ergonomic T-bar hydraulic control precisely meters flow for a natural "feel" and provides advanced optimum blade control that will enhance any operator’s grading skills. Blade response is powerful and quick.
  • Sealed-switch module (SSM) gives fingertip control of keyless start and enables exclusive features such as turbocharger cool-down and auto shutdown. Touchpad security system requires a numeric pass code (when enabled) to help prevent unauthorized machine operation.


EASE OF SERVICE

  • Hinged side shields swing open wide for convenient access to dipsticks; fill tubes; batteries; master electrical shutoff; and engine, transmission, and hydraulic filters.
  • Operator station tilts a full 70 degrees in only minutes, for wide-open drivetrain component access.
  • Ground-level air cleaner simplifies periodic service and is monitored by the onboard diagnostic system. Filters are common with many other John Deere crawler models.
  • Fluid-sample and diagnostic test ports simplify preventative maintenance work and troubleshooting for increased uptime.
  • Available quick fluid-evacuation system helps speed servicing. 500-hour engine oil and 2,000-hour transmission and hydraulic fluid intervals decrease downtime and expense.
  • Conveniently located easy-to-read sight gauges for checking fluid levels.


BLADE TYPES

  • PAT blade’s heavy-duty ball-and-socket C-frame joint resists material build-up for long-term grading precision.
  • With heavy-duty high-profile push beams and a three-position pitch-adjustable semi-U blade, the outside- mount dozer delivers exceptional durability and high-production performance.
  • Heavy-duty cross-members provide solid lateral support and are shaped to allow a clear view of the bottom of the blade. What’s more, their raised position allows generous clearance at the end of the push.
  • Greaseless shim-adjustable clamshell bearings in front and rear joints of the push beams ensure a tight connection for low-maintenance “like-new” grading performance.


TRANSMISSION

  • Infinitely variable range to 11 km/h (6.8 mph) gives total flexibility to match ground speed to the load. Travel can also be varied to fit specific applications, terrain conditions, or operating preferences — or limited to maximize undercarriage life. 
  • Counter rotation is another productivity-boosting feature. It enables an operator to overcome heavy corner loads and quickly reposition the blade on the go. Provides space-saving spot turns, too.
  • Simply set maximum desired ground speed, and the power-management system automatically maintains peak engine rpm and power efficiency without stalling or shifting.
  • These dozers steer the same and maintain their preset speed whether working on level ground or a 2-to-1 slope. So there’s never a need to cross-steer or ride a brake.
  • Standard Eco mode automatically adjusts engine power and transmission settings based on load while maintaining ground speed, to help optimize fuel economy with no loss of productivity. Auto-idle helps save fuel by reducing engine speed when the dozer is not moving.
  • With their hydrostatic drivetrains and impressive drawbar pull, our dozers work well with rear-mount attachments such as rippers and cable plows.


CPU/MONITOR

  • Advanced diagnostic monitor provides easy-to-understand messages to help speed troubleshooting.
  • If a spec is pushed beyond a critical range limit, an alarm will sound and a red warning light activated to unmistakably inform the operator to shut down the machine and investigate the cause.
  • Exclusive Total Machine Control (TMC) monitor lets an operator select decelerator mode and response, forward/reverse ground-speed ranges, steering modulation, F-N-R shift rate, and forward/reverse speed ratios.


UNDERCARRIAGE

  • Unlike others that utilize the same mainframe with all dozers, our purpose-built design optimizes blade ratio and center of gravity for superior balance.
  • Available extended-life undercarriage delivers up to twice the bushing life, for extra durability in extremely abrasive conditions. If you want to further reduce maintenance and operating costs, choose the SC-2™ extended-life option.
  • Heavy-duty sealed and lubricated undercarriage is built with no compromise to keep this machine in the field.


OPTIONS

  • Auto-raise feature elevates the rear ripper when the machine is put into reverse, to speed operator productivity and minimize component wear.
  • High-intensity halogen driving lights are standard. But if you want to extend your workday beyond daylight, opt for the 360-deg. light package.
  • Protection packages and waste-handler configurations equip these dozers to survive, even thrive, in tough environments.

 

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