John Deere 8850

Name: John Deere 8850
Brand: John Deere

Power

370 hp

Production

1982-1988

Engine

Intercooled turbocharged diesel, 8-cylinder

Transmission

Quad-Range

Weight

37,700 lbs [17100 kg]

Drive

4WD

Over 200 HP 1980s

From the same series:

8650

Introduction

John Deere 8850 Four-Wheel Drive Tractor

The John Deere 8850 is a high-horsepower, four-wheel drive tractor produced between 1982 and 1988 in Waterloo, Iowa. It represents a significant era in agricultural machinery, notable for being the largest model of its series and featuring a distinct V8 engine configuration.

Engine and Performance

The tractor is powered by a 15.7-liter (955 ci) liquid-cooled V8 turbocharged diesel engine. This unit produces 370 horsepower at a rated engine speed of 2100 RPM. The engine features an intercooled induction system and a compression ratio of 15.5:1, designed to meet the high power demands of large-scale farming operations.

Transmission and Drivetrain

The 8850 utilizes a Quad-Range partial power shift transmission, providing 16 forward and 6 reverse gears. The system employs a Perma-Clutch hydraulic wet disc clutch. Operation requires the tractor to be stationary to select one of the four ranges, while power shifts are possible between specific speeds within each range. Final drive is achieved through inboard compound planetary gears, supported by an articulated steering system.

Hydraulics and Hitch

The hydraulic system is a closed-center, constant-pressure design delivering a pump flow of 44 gpm (166.5 lpm), supporting three to four valves. The rear hitch is a category 4/4N type equipped with lower-link draft sensing for precise implement control, capable of lifting up to 10,250 lbs (4,649 kg).

Operator Environment and Chassis

The machine is equipped with the Sound-Gard cab, which includes factory-installed air conditioning to enhance operator comfort. Traction is managed by an electro-hydraulic differential lock on both the front and rear axles. The tractor features power wet disc brakes and weighs approximately 37,700 lbs (17,100 kg) in operating configuration.

Conclusion

"The John Deere 8850 was engineered for heavy-duty primary tillage and large-scale agricultural traction requirements. Its combination of high engine displacement, articulated steering, and substantial lift capacity positions it as a specialized machine for expansive farming operations that demand significant power output."

Introduction

Production Information of John Deere, 8850

The production information of the tractor (8850) includes details about its manufacturing.

The model 8850 was the largest of the four-wheel drive tractors that John Deere unveiled in 1982. Its big V-8 was a departure from John Deere's usual engine design. The 8850 had an available full-power PTO and Load-and-Depth control three-point hitch.

Original price was $122,694 in 1983

Four-wheel Drive (4WD) tractor

Built in Waterloo, Iowa, USA


Manufacturer	John Deere

Dimension and Tires Information of John Deere, 8850

This section sums up the dimension and tires information of the tractor.


Wheelbase	133 inches [337 cm]
Front axle	4.331 by 127.5 inches [110 by 3238 mm]
Operating weight	37,700 lbs [17100 kg]
Length	257.8 inches [654 cm]
Rear axle	4.331 by 127.5 inches [110 by 3238 mm]
Shipping weight	37,480 lbs [17000 kg]


	30.5L-32
Ag front	20.8-38
	24.5-32
	23.1-34
Ag rear	20.8-38
Ag rear	20.8-42
	30.5L-32
Ag front	20.8-42
	20.8-42
	24.5-32
	23.1-34
	20.8-42

Engine Specifications of John Deere, 8850

Get the specifications for the engine and if different options are available.

Liquid-cooled V8

Intercooled turbocharged diesel

8-cylinder


Oil capacity	51 qts [48.3 L]
Displacement	955 ci [15.7 L]
Compression	15.5:1
Bore/Stroke	5.51x5.00 inches [140 x 127 mm]
Coolant capacity	78 qts [73.8 L]
Starter volts	12
Rated RPM	2100
Power	370 hp [275.9 kW]

Transmission Information of John Deere, 8850Y

Discover all variants of transmission available for this tractor model.

Transmission variants 1

Tractor must be stopped to select one of four ranges. Clutchless power shift between speeds 1-2 and 3-4 in range. A synchronized shift (using clutch) can be made between 2 and 3 in range.


Transmission	Quad-Range
Oil capacity	182 qts [172.2 L]
Clutch	Perma-Clutch hydraulic wet discs
Type	Partial power shift
Gears	16 forward and 6 reverse

Mechanical Specs of John Deere, 8850Y

This section summarizes all mechanical information such as the brake system and other specifications.

Four-wheel drive

Power wet disc brakes

Articulated power steering

Sound-Gard cab with air-conditioning


Final drives	Inboard compound planetary
Differential lock	Electro-hydraulic front and rear

Power Information of John Deere, 8850Y

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Rear PTO	Independent OptOptional
Clutch	Hydraulic wet disc
Rear PTO Type	1000 (1.75)

Hydraulics Specifications of John Deere, 8850

Hydraulic system type, pressure, pump flow and valves.


Type	Closed center constant-pressure
Pump flow	44 gpm [166.5 lpm]
Capacity	45.5 gal [172.2 L]
Valves	3 to 4

Three-Point Hitch of John Deere, 8850

Hitch category and rear/front lift capacity.


Rear Type	4/4N
Control	Lower-link draft sensing
Rear lift	10,250 lbs [4649 kg]

Electrical System of John Deere, 8850

Battery voltage, charging system and ground.


Ground	Negative
Battery CCA	625
Batteries	3
Charging system	Alternator
Battery volts	12
Charging amps	110

Frequently asked questions

How much horsepower does the John Deere 8850 have?

The John Deere 8850 delivers 370 HP.

What years was the John Deere 8850 produced?

The John Deere 8850 was produced in 1982-1988.

What engine does the John Deere 8850 have?

The John Deere 8850 is powered by a Intercooled turbocharged diesel, 8-cylinder engine.

What transmission does the John Deere 8850 use?

The John Deere 8850 uses a Quad-Range transmission.

How much does the John Deere 8850 weigh?

The John Deere 8850 weighs 37,700 lbs [17100 kg].

Is the John Deere 8850 4WD?

The John Deere 8850 is available in 4WD.

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