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C S E R I E S I I |
S P E C I F I C A T I O N S |
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850C |
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C O N S T R U C T II O N E Q U II P M E N T |
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Engine |
850C |
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Type ................................................................................................ |
John Deere 6081A with altitude-compensating turbocharger; aftercooled |
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Engine power .................................................................................. |
185 SAE net hp (138 kW) / 192 SAE gross hp (143 kW) @ 1,800 rpm |
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Cylinders ......................................................................................... |
6 |
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Displacement .................................................................................. |
494 cu. in. (8.1 L) |
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Fuel consumption, typical ................................................................ |
4.6 to 7.0 gal./hr. (17.4 to 26.5 L/h) |
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Maximum net torque ....................................................................... |
601 lb.-ft. (815 Nm) @ 1,300 rpm |
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Lubrication ...................................................................................... |
pressure system with full-flow spin-on filter and oil-to-water cooler |
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Air cleaner....................................................................................... |
dual stage dry type with safety element, precleaner, and underhood restriction indicator |
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Electrical system ............................................................................. |
24 volt with 45-amp alternator |
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Cooling fan ...................................................................................... |
blower |
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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; 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; independently 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) |
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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 / |
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4.35 gal. (16.5 L) PAT |
10.0 gal. (37.9 L) PAT |
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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 |
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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 |
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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 / |
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34 in. (865 mm) PAT |
Shoes, each side ............................................................................. |
40 |
40 |
43 |
43 |
Ground contact area ........................................................................ |
5,184 sq. in. (33 445 cm2) |
6,480 sq. in. (41 806 cm2) |
7,260 sq. in. (46 838 cm2) |
9,196 sq. in. (59 329 cm2) |
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base / 8,228 sq. in. (53 084 |
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cm2) 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 / |
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8.2 psi (56.5 kPa) PAT |
6.7 psi (46.2 kPa) PAT |
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5.4 psi (37.2 kPa) PAT |
Ground clearance, minimum |
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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)................................................................................................................................................................................................... |
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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 / |
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82 in. (2083 mm) PAT |
88 in. (2235 mm) PAT |
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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 |
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mm) Semi-U / 6 degrees, |
mm) Semi-U / 7 degrees, |
mm) PAT |
mm) Semi-U / 7 degrees, |
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or 9.7 in. (246 mm) PAT |
or 10.8 in. (274 mm) PAT |
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or 12.8 in. (325 mm) PAT |
Track rollers each side..................................................................... |
7 |
7 |
7 |
7 |
Track pitch ................................................................................... |
8 in. (203 mm) |
8 in. (203 mm) |
8 in. (203 mm) |
8 in. (203 mm) |
16
SAE Operating Weights |
850C LT |
850C WT |
850C WXLT |
850C LGP |
Base weights were computed for units with standard equipment, rollover protective structures, full fuel tanks, and 175-lb. (79 kg) operators. |
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All-Hydraulic (PAT) Dozer ................................................................. |
42,418 lb. (19 241 kg) |
43,366 lb. (19 671 kg) |
44,369 lb. (20 126 kg) |
44,582 lb. (20 222 kg) |
Semi-U (High Production) ................................................................ |
40,485 lb. (18 402 kg) |
41,070 lb. (18 668 kg) |
N/A |
42,048 lb. (19 113 kg) |
Refer to the Attachment Guide or see your dealer for details regarding Semi-U (Low Profile), Straight, and Mechanical Angle blades for the 850C LT and Straight blade for the 850C LGP. |
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Blade Weights |
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Includes push beams, trunnion mounts, straight end bits, C-frames, angle and tilt cylinders where applicable. |
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All-Hydraulic (PAT) Dozer ................................................................. |
6,094 lb. (2764 kg) |
6,253 lb. (2836 kg) |
6,389 lb. (2898 kg) |
6,521 lb. (2958 kg) |
Semi-U (High Production) ................................................................ |
5,289 lb. (2404 kg) |
5,495 lb. (2498 kg) |
N/A |
5,636 lb. (2562 kg) |
Refer to the Attachment Guide or see your dealer for details regarding Semi-U (Low Profile), Straight, and Mechanical Angle blades for the 850C LT and Straight blade for the 850C LGP. |
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Blade Capacities |
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All-Hydraulic (PAT) Dozer ................................................................. |
5.15 cu. yd. (3.94 m3) |
5.50 cu. yd. (4.21 m3) |
5.50 cu. yd. (4.21 m3) |
5.78 cu. yd. (4.42 m3) |
Semi-U (High Production) ................................................................ |
7.44 cu. yd. (5.69 m3) |
8.06 cu. yd. (6.16 m3) |
N/A |
7.14 cu. yd. (5.46 m3) |
Refer to the Attachment Guide or see your dealer for details regarding Semi-U (Low Profile), Straight, and Mechanical Angle blades for the 850C LT and Straight blade for the 850C LGP. |
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Optional or Special Equipment |
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Complete push beam assemblies for straight or semi-U |
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blades, rakes, Stingers®, etc. .................................................. |
2,083 lb. (947 kg) |
2,192 lb. (996 kg) |
N/A |
2,298 lb. (1045 kg) |
Complete PAT dozer C-frame assembly ........................................... |
3,141 lb. (1425 kg) |
3,141 lb. (1425 kg) |
3,277 lb. (1487 kg) |
3,277 lb. (1487 kg) |
PAT dozer blade weight ................................................................... |
2,953 lb. (1339 kg) |
3,112 lb. (1411 kg) |
3,112 lb. (1411 kg) |
3,244 lb. (1471 kg) |
Tracks – Dura-Trax™ lubricated chain with split master link |
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Single-bar grousers |
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22-in. (560 mm) moderate duty ........................................ |
5,762 lb. (2619 kg) |
5,762 lb. (2619 kg) |
N/A |
N/A |
22-in. (560 mm) extreme duty .......................................... |
6,273 lb. (2851 kg) |
6,273 lb. (2851 kg) |
N/A |
N/A |
24-in. (610 mm) moderate duty ........................................ |
6,035 lb. (2743 kg)** |
6,035 lb. (2743 kg) |
N/A |
N/A |
24-in. (610 mm) extreme duty .......................................... |
6,665 lb. (3029 kg)*§ |
6,665 lb. (3029 kg)§ |
N/A |
7,164 lb. (3256 kg) |
30-in. (760 mm) moderate duty................................................................................................ |
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6,824 lb. (3102 kg)* |
7,336 lb. (3335 kg) |
N/A |
34-in. (865 mm) moderate duty ............................................................................................................................................................................................................... |
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7,776 lb. (3535 kg)** |
38-in. (965 mm) moderate duty§ ............................................................................................................................................................................................................. |
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8,349 lb. (3795 kg)*§ |
Swamp shoe – 36.5-in. (928 mm) .................................................................................................................................................................................................................. |
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11,492 lb. (5224 kg)§ |
Cab with pressurizer and heater/air conditioner............................... |
806 lb. (366 kg) |
806 lb. (366 kg) |
806 lb. (366 kg) |
806 lb. (366 kg) |
ROPS............................................................................................... |
1,430 lb. (650 kg)* |
1,430 lb. (650 kg)* |
1,430 lb. (650 kg)* |
1,430 lb. (650 kg)* |
Rock guard, center section .............................................................. |
443 lb. (201 kg)* |
443 lb. (201 kg)* |
N/A |
N/A |
Drawbar, rigid.................................................................................. |
112 lb. (51 kg)** |
112 lb. (51 kg) |
112 lb. (51 kg) |
112 lb. (51 kg)* |
Drawbar, extended rigid................................................................... |
282 lb. (128 kg)* |
282 lb. (128 kg)* |
282 lb. (128 kg)* |
282 lb. (128 kg) |
Limb risers (ROPS canopy and cab)................................................. |
550 lb. (250 kg) |
550 lb. (250 kg) |
550 lb. (250 kg) |
550 lb. (250 kg) |
Rear screen (ROPS canopy) ............................................................. |
75 lb. (34 kg) |
75 lb. (34 kg) |
75 lb. (34 kg) |
75 lb. (34 kg) |
Rear screen (cab with air conditioner) ............................................. |
110 lb. (50 kg) |
110 lb. (50 kg) |
110 lb. (50 kg) |
110 lb. (50 kg) |
Side screens (ROPS canopy and cab) .............................................. |
70 lb. (32 kg) |
70 lb. (32 kg) |
70 lb. (32 kg) |
70 lb. (32 kg) |
Cylinder hose guards....................................................................... |
65 lb. (30 kg) |
65 lb. (30 kg) |
65 lb. (30 kg) |
65 lb. (30 kg) |
Prescreener guard ........................................................................... |
15 lb. (7 kg) |
15 lb. (7 kg) |
15 lb. (7 kg) |
15 lb. (7 kg) |
Track cleaner bars, front.................................................................. |
275 lb. (125 kg) |
N/A |
N/A |
N/A |
Track cleaner bars, rear................................................................... |
450 lb. (205 kg) |
N/A |
N/A |
N/A |
Tank guard ...................................................................................... |
1,100 lb. (500 kg) |
1,100 lb. (500 kg) |
1,100 lb. (500 kg) |
1,100 lb. (500 kg) |
Lift cylinder guards.......................................................................... |
120 lb. (55 kg) |
120 lb. (55 kg) |
120 lb. (55 kg) |
120 lb. (55 kg) |
Extreme-service bottom guard ........................................................ |
350 lb. (159 kg) |
350 lb. (159 kg) |
350 lb. (159 kg) |
350 lb. (159 kg) |
Heavy-duty transverse case cover with doors.................................. |
944 lb. (429 kg)* |
944 lb. (429 kg)** |
944 lb. (429 kg)** |
944 lb. (429 kg) |
Grille housing mounted counterweight............................................. |
1,592 lb. (724 kg)§ |
1,592 lb. (724 kg)§ |
1,592 lb. (724 kg)§ |
1,592 lb. (724 kg)§ |
*Included in SAE operating weight.
**Also included in SAE operating weight – 850C with PAT option. § Not available with PAT option.
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