John Deere industrial tractors

John Deere 850

The John Deere 850 is an industrial crawler tractor produced from 1977 to 1984. It features a John Deere 6-619T turbocharged 6-cylinder diesel engine with 165 hp gross power and 145 hp net power. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds. It has a crawler drive with 20-inch tracks and a four-post ROPS with optional air-conditioned cab. Fuel capacity is 82 gallons and hydraulic system capacity is 35 gallons with an open center hydraulic system. The 850 supports front-mount blades such as the 123" John Deere 6545 and 152" John Deere 6540 blades. Operating weight is 32,600 lbs.

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Model850

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Technical Specifications

Detailed specifications and technical data for John Deere 850

Power

Engine (net)	145 hp (108.1 kW)
Engine (gross)	165 hp (123.0 kW)

Engine

Type	turbocharged diesel
Model	John Deere 6-619T
Torque	550 lb-ft (745.8 Nm)
Cooling	liquid-cooled
Starter	electric
Cylinders	6-cylinder
Torque RPM	1200
Air cleaner	dry
Bore/Stroke	5.12x5.00 inches (130 x 127 mm)
Compression	15.2:1
Power (net)	145 hp (108.1 kW)
Displacement	619 ci (10.1 L)
Oil capacity	34 qts (32.2 L)
Power (gross)	165 hp (123.0 kW)
Starter volts	24
Coolant capacity	36 qts (34.1 L)

Tracks

Width	20 inches (50 cm)
Other widths	22 inches (55 cm), 24 inches (60 cm)
Area on ground	3800 in² (2.5 m²)
Ground pressure	9.68 psi (0.7 bar)
Length on ground	95 inches (241 cm)

Capacity

Fuel	82 gal (310.4 L)
Hydraulic system	35 gal (132.5 L)

Dimensions

Width	94 inches (238 cm) *Width over 20-inch tracks at 74-inch gauge.
Length	152 inches (386 cm)
Height (ROPS)	126 inches (320 cm)
Operating weight	32600 lbs (14787 kg)
6540 dozer length	210 inches (533 cm)
6545 dozer length	208.5 inches (529 cm)

Electrical

Batteries	2
Battery CCA	570
Battery volts	12
Charging system	alternator

Hydraulics

Type	open center
Capacity	35 gal (132.5 L)
Pressure	2250 psi (155.1 bar)
Pump flow	38 gpm (143.8 lpm)

Mechanical

Drive	crawler
Safety	Four-post ROPS. Cab available with air-conditioning.

Production

Type	Industrial Crawler tractor
Years produced	1977 - 1984

Attachments

123" Blade	John Deere 6545, front-mount, 123 inches width (312 cm), 44.5 inches height (113 cm), 37.5 inches lift (95 cm), 15 inches tilt (38 cm), Angling 25°, 22 inches cut (55 cm), 4520 lbs (2050 kg), hydraulic-lift, manual-angle
152" Blade	John Deere 6540, front-mount, 152 inches width (386 cm), 40 inches height (101 cm), 36.5 inches lift (92 cm), 13.25 inches tilt (33 cm), Angling 25°, 21.1 inches cut (53 cm), 4185 lbs (1898 kg), hydraulic-lift, hydraulic-angle

Transmission