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John Deere 850 Crawler Bulldozer Specifications

General Dimensions

Transport Height	10 ft 6 in. (3.2 m)
Transport Length	16 ft 1.5 in. (4.92 m)
Machine Width	12 ft 8 in. (3.86 m)
Weight	37,120 lb (13 183 kg)

Engine

John Deere 500 Series

Number of Cylinders and Displacement	6 cylinders, 619 cu in. (10.1 L)
Air Intake System	Turbocharged
Bore and Stroke	5.12 x 5 in. (130 x 127 mm)
Net hp at 1800 rpm	145 SAE hp (108 kW) DIN 108 kW
Maximum Torque at 1200 rpm	550 lb-ft (746 N·m)
Nozzle Opening Pressure: New	4050 ± 50 psi (27 925 ± 345 kPa)
Nozzle Opening Pressure: Used	3800 ± 50 psi (26 200 ± 345 kPa)
Valve Clearance (Cold): Intake	0.015 in. (0.38 mm)
Valve Clearance (Cold): Exhaust	0.025 in. (0.63 mm)
Oil Pressure	40—50 psi (275—345 kPa)
Static Injection Pump Timing	Timing lines aligned w/ flywheel located at TDC
Dynamic Injection Pump Timing at Rated Load rpm*	9 + 0 - 1° BTDC
Speeds: Slow Idle	975-1000 rpm (disconnect clutch engaged)
Speeds: Fast Idle	1975-2000 rpm
Full Load Rating	1800 rpm
Cylinder Pressure Hot (Min)	380 psi (2620 kPa) cranking w/ injectors removed
Turbo Boost Pressure at Full Load	11-13 psi (76—90 kPa)
Flywheel Teeth	147

Note: *For latest information, see Dealer Technical Assistance Center (DTAC) Solution K000413.

Transmission

Model and Speeds	Hydrostatic: variable speed, forward and reverse
High Pressure Relief	6300–6700 psi (43,440–46,195 kPa)
Maximum Engine rpm Pulldown	1550 rpm

Hydraulic System—Open-Center

Pump Size: (S.N. -365073)	5.96 cu in. (97.7 cm³)
Pump Size: (S.N. 365074—)	4.98 cu in. (81.6 cm³)
Main System Relief at Fast Idle	2250 + 175 - 0 psi (15,515 + 1210 - 0 kPa)
Pump Flow, Min Used at 2000 psi (13 790 kPa) and 1800 rpm: (S.N. -365073)	36 gpm (136 L/min)
Pump Flow, Min Used at 2000 psi (13 790 kPa) and 1800 rpm: (S.N. 365074—)	30 gpm (114 L/min)

Relief Valve Settings

System Relief Valve at Fast Idle, Bulldozer	2250 + 175 - 0 psi (15,515 + 1210 - 0 kPa)
Circuit Relief Valve at Fast Idle: Blade Boom Lift	2500 + 175 - 0 psi (17,240 + 1210 - 0 kPa)
Circuit Relief Valve at Fast Idle: Auxiliary	2500 + 175 - 0 psi (17,240 + 1210 - 0 kPa)

Capacities

See front of this book for the codes [ ].

Component	U.S.	Imp.	Metric
Engine Cooling System [N]	9 gal	7.5 gal	34 L
Engine Crankcase w/ Filter [E]	36 qt	28 qt	34 L
Final Drive (Each): 1st Reduction [J]	5.5 gal	4.6 gal	20.8 L
Final Drive (Each): 1st Reduction 850 LGP [J]	10.0 gal	8.3 gal	37.8 L
Final Drive (Each): 2nd Reduction [J]	3.5 gal	2.9 gal	13.2 L
Splitter [M]	1.5 gal	1.3 gal	5.7 L
Hydraulic System [C]	35 gal	29.2 gal	132.5 L
Fuel Tank	82 gal	68.3 gal	310.4 L

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