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 Power | 205 hp @ 1800 rpm |
| Operating Weight | 42558 - 48005 lb |
| Track on Ground | 109 - 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.