John Deere 850C WXLT Compact Loader User Manual


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850C
Engine 850C
Type................................................................................................John Deere 6081A with altitude-compensating turbocharger; aftercooled
Engine power..................................................................................185 SAE net hp (138 kW) / 192 SAE gross hp (143 kW) @ 1,800 rpm
Cylinders.........................................................................................6
Displacement ..................................................................................494 cu.in. (8.1 L)
Fuel consumption, typical................................................................4.6 to 7.0 gal./hr. (17.4 to 26.5 L/h)
Maximum net torque.......................................................................601 lb.-ft. (815 Nm) @ 1,300 rpm
Lubrication......................................................................................pressure system with full-flow spin-on filter and oil-to-water cooler
Air cleaner.......................................................................................dual stage dry type with safety element, precleaner, and underhood restriction indicator
Electrical system.............................................................................24 volt with 45-amp alternator
Cooling fan......................................................................................blower
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 displace-
ment piston pump and motor combination; travel speeds (forward and reverse) infinite to 6.8 mph (0 to 11 km/h); 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 dead stop
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
Steering
single-lever steering, direction, and ground-speed control provides smooth metered turns; full power turns, counterrotation,and infinitely variable track speeds provide unlimited maneuverability and
optimal control; hydrostatic steering system eliminates steering clutches and brakes
Brakes
hydrostatic (dynamic) braking stops machine when the direction/steering control lever is moved to neutral, the decelerator is depressed to the end of travel, or the brake pedal is depressed
Automatic Parking Brake
this safety feature engages wet, multiple-disk brakes automatically whenever the engine stops,the operator applies the brake pedal, or the neutral start lever lock is in stop position; machine cannot be
operated with brake applied
Hydraulic System
System type....................................................................................open center
Pressure, system relief....................................................................2,250 psi (15 514 kPa)
Pump type.......................................................................................gear
Flow................................................................................................44 gpm (166 L/min.) @ 2,100 rpm
Filter, return oil................................................................................10 micron
Control ............................................................................................standard – T-bar,two function / with All-Hydraulic (PAT) dozer blade – T-bar,three function
Cylinders.........................................................................................heat-treated, chrome-plated, polished cylinder rods with hardened steel (replaceable bushings) pivot pins
Cooling............................................................................................oil-to-air heat exchanger
Capacities (U.S.) 850C LT 850C WT 850C WXLT 850C LGP
Fuel tank with lockable cap.............................................................92 gal. (348 L) 92 gal. (348 L) 92 gal. (348 L) 92 gal.(348 L)
Cooling system with recovery tank..................................................9 gal.(34 L) 9 gal. (34 L) 9 gal.(34 L) 9 gal. (34 L)
Engine oil with spin-on filter............................................................34 qt. (32.2 L) 34 qt. (32.2 L) 34 qt. (32.2 L) 34 qt.(32.2 L)
Final drive (each)
1st reduction............................................................................3.25 gal. (12.3 L) Semi-U / 4.35 gal. (16.5 L) Semi-U / 10.0 gal. (37.9 L) PAT 10.0 gal. (37.9 L) Semi-U /
4.35 gal. (16.5 L) PAT 10.0 gal. (37.9 L) PAT 10.0 gal. (37.9 L) PAT
2nd reduction...........................................................................3.25 gal. (12.3 L) 3.25 gal. (12.3 L) 3.25 gal. (12.3 L) 3.25 gal. (12.3 L)
Hydraulic system reservoir..............................................................21 gal. (79.5 L) 21 gal. (79.5 L) 21 gal. (79.5 L) 21 gal.(80 L)
Hydrostatic transmission reservoir...................................................27 gal. (102.2 L) 27 gal. (102.2 L) 27 gal. (102.2 L) 27 gal. (103 L)
Undercarriage
seven-roller track frame with front and rear track guides and sprocket guard; John Deere Dura-Trax™ features deep-heat-treated, sealed, and lubricated track links and through-hardened, sealed,and
lubricated rollers for maximum wear resistance; sprockets are segmented; extreme-duty shoes are available (on some models) for severe applications
Chain...............................................................................................sealed and lubed sealed and lubed sealed and lubed sealed and lubed
Grouser width..................................................................................24 in. (610 mm) 30 in. (762 mm) 30 in. (762 mm) 38 in. (965 mm) base /
34 in. (865 mm) PAT
Shoes, each side.............................................................................40 40 43 43
Ground contact area........................................................................5,184 sq. in.(33 445 cm
2
) 6,480 sq. in. (41 806 cm
2
) 7,260 sq. in. (46 838 cm
2
) 9,196 sq. in.(59 329 cm
2
)
base / 8,228 sq. in. (53 084
cm
2
) PAT
Ground pressure..............................................................................7.8 psi (53.8 kPa) Semi-U / 6.3 psi (43.4 kPa) Semi-U / 6.1 psi (42.0 kPa) PAT 4.6 psi (31.7 kPa) Semi-U /
8.2 psi (56.5 kPa) PAT 6.7 psi (46.2 kPa) PAT 5.4 psi (37.2 kPa) PAT
Ground clearance,minimum
With single-bar grouser (excluding grouser height)...................16.0 in. (406 mm) 16.0 in. (406 mm) 16.0 in. (406 mm) 16.0 in.(406 mm)
With swamp shoe (including grouser height)...................................................................................................................................................................................................19.0 in.(483 mm) base
Length of track on ground...............................................................108 in.(2743 mm) 108 in. (2743 mm) 121 in.(3073 mm) 121 in. (3073 mm)
Track gauge,standard.....................................................................74 in.(1880 mm) Semi-U / 80 in.(2032 mm) Semi-U / 88 in. (2235 mm) PAT 88 in. (2235 mm) Semi-U /
82 in. (2083 mm) PAT 88 in. (2235 mm) PAT 92 in. (2337 mm) PAT
Oscillation at front roller..................................................................6 degrees, or 9.1 in. (231 6 degrees, or 9.0 in. (229 6 degrees,or 10.4 in. (264 7 degrees, or 12.5 in. (318
mm) Semi-U / 6 degrees, mm) Semi-U / 7 degrees, mm) PAT mm) Semi-U / 7 degrees,
or 9.7 in. (246 mm) PAT or 10.8 in. (274 mm) PAT or 12.8 in. (325 mm) PAT
Track rollers each side.....................................................................7777
Track pitch...................................................................................8 in.(203 mm) 8 in. (203 mm) 8 in. (203 mm) 8 in. (203 mm)
16
SPECIFICATIONS
C SERIES II
CONSTRUCTION EQUIPMENT
CONSTRUCTION EQUIPMENT
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