Specifications – John Deere J DOZERS 850J User Manual

Page 20

Engine

850J / 850J LT / 850J WT / 850J WLT

850J LGP

For use in U.S.,

For use outside U.S.,

For use in U.S.,

For use outside U.S.,

Canada, and Europe

Manufacturer and Model . . . . . . . . . . . . . . John Deere PowerTech

Plus 6090HT John Deere PowerTech 6081

John Deere PowerTech Plus 6090HT

John Deere PowerTech 6081

Non-Road Emissions Standards . . . . . . . . . EPA Tier 3 / EU Stage IIIA

EPA Tier 2 / EU Stage II

EPA Tier 3 / EU Stage IIIA

EPA Tier 2 / EU Stage II

Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Displacement . . . . . . . . . . . . . . . . . . . . . . 550 cu . in . (9 .0 L)

496 cu . in . (8 .1 L)

550 cu . in . (9 .0 L)

496 cu . in . (8 .1 L)

Net Peak Power (ISO9249) . . . . . . . . . . . . 185 hp (137 kW) @ 1,800 rpm

185 hp (137 kW) @ 1,800 rpm

200 hp (152 kW) @ 1,800 rpm

200 hp (151 kW) @ 1,800 rpm

Net Peak Torque (ISO9249) . . . . . . . . . . . . 611 lb .-ft . (828 Nm) @ 1,500 rpm

590 lb .-ft . (800 Nm) @ 1,400 rpm

675 lb .-ft . (915 Nm) @ 1,500 rpm

650 lb .-ft . (880 Nm) @ 1,400 rpm

Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . turbocharger and air-to-air aftercooler turbocharger and air-to-air aftercooler turbocharger and air-to-air aftercooler turbocharger and air-to-air aftercooler

Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . dual-stage dry type with tangential

dual-stage dry type with tangential

unloader

Slope Operation (maximum angle) . . . . . . . 45 deg .

45 deg .

Cooling

850J / 850J LT / 850J WT / 850J WLT / 850J LGP

Variable-speed suction fan

Engine Coolant Rating . . . . . . . . . . . . . . . . –34 deg . F (–37 deg . C)

Powertrain

850J

850J LT

850J WT

850J WLT

850J LGP

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; inde-

pendently 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)

Travel Speeds

Forward and Reverse . . . . . . . . . 6 .3 mph (10 .1 km/h)

Maximum (optional) . . . . . . . . . . 6 .8 mph (10 .9 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

double-reduction (spur gear set and

and dozer push frames for isolation from shock loads

planetary) transfer shock loads; 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)

Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . decelerator/brake pedal; automatic power management with manual override for matching ground speed

Service Brakes . . . . . . . . . . . . . . . . . . . . hydrostatic (dynamic) braking stops 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, whenever the decelerator is depressed to the end of travel, or whenever the

park lock lever is placed in the start or neutral position and motion is detected; machine cannot be driven with brake applied, reducing wear-out or need for adjustment;

spring-applied, hydraulic release

Hydraulics

Load sense, piston pump

Blade Type . . . . . . . . . . . . . . . . . . . . . . . . Outside dozer

PAT

Outside dozer

PAT

Outside dozer

Pump (74 cc) . . . . . . . . . . . . . . . . . . . . . . . 46 gpm (174 L/m)

46 gpm (174 L/m)

46 gpm (174 L/m) 46 gpm (174 L/m)

System Relief Pressure . . . . . . . . . . . . . . . 3,625 psi (24 993 kPa)

3,625 psi (24 993 kPa)

3,625 psi

(24 993 kPa)

Differential Pressure . . . . . . . . . . . . . . . . . 275 psi (1896 kPa)

275 psi (1896 kPa)

275 psi (1896 kPa) 275 psi (1896 kPa)

Maximum Flow @ Unloaded High Idle . . . . 43 gpm (163 L/m)

43 gpm (163 L/m)

43 gpm (163 L/m) 43 gpm (163 L/m)

Control . . . . . . . . . . . . . . . . . . . . . . . . . . . T-bar hydraulic-pilot two-

T-bar hydraulic-pilot two-

T-bar hydraulic-

function joystick

function joystick with push-

function joystick

function joystick with push-

pilot two-function pilot two-function

button angle function

joystick with

joystick

push-button

angle function

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . convective oil sump

convective oil sump

convective

oil sump

PAGES

20–21

Specifications

This manual is related to the following products:

J DOZERS 750J