John Deere industrial tractors

John Deere 84

The John Deere 84 is a wheel loader manufactured by John Deere from 1987 to 1990. It features a Yanmar 3.5L 4-cylinder liquid-cooled diesel engine producing 55 hp gross and 52 hp net. The tractor has a 3-speed torque converter transmission with 3 forward and 1 reverse gears. It is equipped with four-wheel drive and articulated power steering, with a four-post ROPS canopy and optional heated cab. The hydraulic system is open center with 2500 psi pressure and 21.1 gpm pump flow. Dimensions include a length of 183 inches, height of 114 inches (ROPS), and operating weight of 11246 lbs. Tires are 17.5/65-20 front and rear. Electrical system features negative ground, alternator charging, two 12-volt batteries. Attachments include a front-end loader with 9040 lbs breakout force and various bucket and boom specifications.

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Model84

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Technical Specifications

Detailed specifications and technical data for John Deere 84

Power

Engine (net)	52 hp (38.8 kW)
Engine (gross)	55 hp (41.0 kW)

Engine

Type	diesel
Model	Yanmar 4TN100
Torque	174 lb-ft (235.9 Nm)
Cooling	liquid-cooled
Starter	electric
Cylinders	4-cylinder
Fuel tank	15.3 gal (57.9 L)
Rated RPM	1800
Torque RPM	1200
Air cleaner	dry
Bore/Stroke	3.90x4.30 inches (99 x 109 mm)
Power (net)	52 hp (38.8 kW)
Displacement	211 ci (3.5 L)
Oil capacity	13 qts (12.3 L)
Power (gross)	55 hp (41.0 kW)
Starter volts	24
Coolant capacity	21.1 qts (20.0 L)

Dimensions

Length	183 inches (464 cm)
Rear tire	17.5/65-20
Front tire	17.5/65-20
Rear tread	61 inches (154 cm)
Front tread	61 inches (154 cm)
Height (ROPS)	114 inches (289 cm)
Operating weight	11246 lbs (5101 kg)

Electrical

Ground	negative
Batteries	2
Battery volts	12
Charging system	alternator

Hydraulics

Type	open center
Pressure	2500 psi (172.4 bar)
Pump flow	21.1 gpm (79.9 lpm)

Mechanical

ROPS	Four-post ROPS canopy. Cab available with heat.
Drive	Four-wheel drive
Steering	Articulated power steering

Production

Type	Wheel Loader
Years made	1987 - 1990
Manufacturer	John Deere

Attachments

Dump angle	47°
Bucket width	81.9 inches (208 cm)
Reach (dumped)	31 inches (78 cm)
Height (at pin)	119 inches (302 cm)
Boom rod diameter	1.77 inches (4 cm)
Clearance (dumped)	94 inches (238 cm)
Bucket rod diameter	1.77 inches (4 cm)
Loader breakout force	9040 lbs (4100 kg)
Boom cylinder diameter	3.15 inches (8 cm)
Rollback (ground line)	49°
Bucket cylinder diameter	3.15 inches (8 cm)