John Deere 850J - Manual (Page 12)

Specifications Specifications Specifications
PAGES
12–13
Engine 850J WH WT w/Semi-U Blade / WLT w/PAT Blade 850J WH LGP w/PAT or Semi-U Blade
Manufacturer and Model. . . . . . . . . . . . . . . . . . John Deere PowerTech Plus TM 6090HT John Deere PowerTech Plus 6090HT
Non-Road Emission Standards . . . . . . . . . . . . . complies with EPA Tier 3 regulations complies with EPA Tier 3 regulations
Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . 550 cu. in. (9.0 L) 550 cu. in. (9.0 L)
Net Power (ISO9249) . . . . . . . . . . . . . . . . . . . . 185 hp (137 kW) @ 1,800 rpm 200 hp (151 kW) @ 1,800 rpm
Net Peak Torque (ISO9249) . . . . . . . . . . . . . . . . 611 lb.-ft. (831 Nm) @ 1,500 rpm 675 lb.-ft. (915 Nm) @ 1,500 rpm
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . pressure system with full-flow spin-on filter and oil-to-water pressure system with full-flow spin-on filter and oil-to-water
cooler cooler
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . dual-stage dry type with tangential unloader dual-stage dry type with tangential unloader
Cooling
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . variable-speed, thermostatically controlled; hydraulically driven with auto reverser on selectable timer or activated by a switch
in the cab
Engine Coolant Rating. . . . . . . . . . . . . . . . . . . . – 34 deg. F (– 37 deg. C) – 34 deg. F (– 37 deg. C)
Powertrain
Transmission. . . . . . . . . . . . . . . . . . . . . . . . . . automatic, dual-path, hydrostatic drive; load-sensing feature automatically adjusts speed and power to match changing load
conditions; each individually controlled track is powered by a variable-displacement piston pump and motor combination;
ground-speed selection buttons on single-lever steering and direction control; independently selectable reverse speed ratios
80%, 100%, 115%, or 130% of forward ground speed; decelerator pedal controls ground speed to stop
System Relief Pressure. . . . . . . . . . . . . . . . . . . 6,650 psi (45 850 kPa) 6,650 psi (45 850 kPa)
Filter, Charge Oil . . . . . . . . . . . . . . . . . . . . . . . . 10 micron 10 micron
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . oil-to-air
Travel Speeds (forward and reverse). . . . . . . . . 6.3 mph (10 km/h)
6.3 mph (10 km/h)
Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . single-lever steering, speed, direction control, and counterrotation; full power turns and infinitely variable track speeds provide
unlimited maneuverability and optimum control; hydrostatic steering eliminates steering clutches and brakes
Final Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . double-reduction planetary final drives transfer torque loads over three gear sets; mounted independently of track frames and
dozer push frames for isolation from shock loads
Total Ratio . . . . . . . . . . . . . . . . . . . . . . . . . 44.7483 to 1 44.7483 to 1
Drawbar Pull
Maximum . . . . . . . . . . . . . . . . . . . . . . . 77,300 lb. (344 kN) 77,300 lb. (344 kN)
@ 1.2 mph (1.9 km/h) . . . . . . . . . . . . . 37,500 lb. (167 kN) 40,000 lb. (178 kN)
@ 2.0 mph (3.2 km/h) . . . . . . . . . . . . . 27,000 lb. (120 kN) 29,500 lb. (131 kN)
Service Brakes . . . . . . . . . . . . . . . . . . . . . . . . hydrostatic (dynamic) braking stops the machine when the direction/steering control lever is moved to neutral or the decelerator
is depressed to the end of travel
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . hydraulic
Parking Brakes . . . . . . . . . . . . . . . . . . . . . . . . exclusive safety feature engages wet, multiple-disc brakes whenever the engine stops, the decelerator is depressed to the end
of travel, or the park lock lever is placed in the start or neutral positions and motion is detected; machine cannot be driven with
brake applied, reducing wear-out or need for adjustment; spring-applied, hydraulic release
Vertis QCA
1300 19th Street, Suite 200
East Moline, IL 61244
Cyan Magenta Yellow Black DKA850JWH Page 12
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