Deere 840 tractor specifications

1976 - 1986

1976 - 1986 Utility tractor

Series:

Series:840 → 940

1980 - 1986

Utility tractor

Series:

840 ←

940

→ 1040

Production

Production
Manufacturer:	John Deere
Type:	Utility tractor
Factory:	Mannheim, Baden-Württemberg, Germany

John Deere 940 Power

John Deere 940 Power
Engine:	42.9 hp 32.0 kW
PTO (claimed):	38.9 hp 29.0 kW

John Deere 940 Engine

John Deere 940 Engine
John Deere 2.9L 3-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Final drives:	planetary
Steering:	power
Brakes:	wet disc
Cab:	Four-post ROPS.
Transmissions:	8-speed collar shift
	16-speed two-speed power shift
Transmission details ...

Capacity

Capacity
Fuel:	20.6 gal 78.0 L
Hydraulic system:	10.8 gal 40.9 L

Hydraulics

Hydraulics
Type:	closed center
Capacity:	10.8 gal 40.9 L
Pressure:	2756 psi 190.0 bar
Pump flow:	6.1 gpm 23.1 lpm

Tractor hitch

Tractor hitch
Rear Type:	II/I
Rear lift:	4878 lbs 2212 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	live
	independent*Optional
Clutch:	dry disc
	wet disc*Optional, independent PTO
Rear RPM:	540
Engine RPM:	540@2400
Front PTO:	optional
Front RPM:	1000
Engine RPM:	1000@2070

Dimensions & Tires

Dimensions & Tires
Wheelbase:	74.4 inches 188 cm
Weight:	5004 lbs 2269 kg
Front tire:	6.50-16
Rear tire:	12.4-32
Full dimensions and tires ...

Electrical

Electrical
Ground:	negative
Charging system:	alternator
Charging amps:	33
Batteries:	2
Battery volts:	12

Production

Production Manufacturer:John Deere
Type:Utility tractor
Factory:Mannheim, Baden-Württemberg, Germany

John Deere 840 Power

John Deere 840 Power Engine:37.5 hp
28.0 kW
PTO (claimed):33.5 hp
25.0 kW

John Deere 840 Engine

John Deere 840 Engine John Deere 2.9L 3-cyl diesel Engine details ...

1976 - 1986

Utility tractor

Series:

840

→ 940

Engine Detail

Engine Detail
John Deere
diesel
3-cylinder
liquid-cooled
Displacement:	179 ci 2.9 L
Bore/Stroke:	4.19x4.33 inches 106 x 110 mm
Power:	37.5 hp 28.0 kW
Fuel system:	direct injection
Compression:	16.8:1
Rated RPM:	2400
Operating RPM:	1300-2400
Starter volts:	12
Starter power:	4 hp 3.0 kW
Oil capacity:	7.4 qts 7.0 L
Coolant capacity:	11.1 qts 10.5 L

Mechanical

Mechanical Chassis:4x2 2WD
Final drives:planetary
Steering:manual
Brakes:hydraulic wet disc
Cab:Four-post ROPS.
Transmissions:8-speed collar shift
16-speed two-speed power shift
Transmission details ...

1976 - 1986

Utility tractor

Series:

840

→ 940

Transmissions overview

Transmissions overview
8-speed collar shift
16-speed two-speed power shift

Transmission

Transmission
Type:	collar shift
Gears:	8 forward and 4 reverse
Clutch:	dry disc

Transmission

Transmission
Type:	two-speed power shift
Gears:	16 forward and 8 reverse

Capacity

Capacity Fuel:20.6 gal
78.0 L
Hydraulic system:10.8 gal
40.9 L

Hydraulics

Hydraulics Type:closed center
Capacity:10.8 gal
40.9 L
Pump flow:6.1 gpm
23.1 lpm

Tractor hitch

Tractor hitch Rear Type:II/I
Rear lift:4878 lbs
2212 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:live
independent*Optional
Clutch:dry disc
wet disc*Optional, independent PTO
Rear RPM:540
Engine RPM:540@2400
Front PTO:optional
Front RPM:1000
Engine RPM:1000@2070

Dimensions & Tires

Dimensions & Tires Wheelbase:74.4 inches
188 cm
Weight:5004 lbs
2269 kg
Front tire:6.50-16
Rear tire:12.4-32
Full dimensions and tires ...

1976 - 1986

Utility tractor

Series:

840

→ 940

John Deere 840 Tires

John Deere 840 Tires
Ag front:	6.50-16
Ag rear:	12.4-32
Ag rear:	9.5-36
	12.4-28

Dimensions

Dimensions
Wheelbase:	74.4 inches 188 cm
Length:	138 inches 350 cm
Width:	65.4 inches 166 cm
Height (ROPS):	94.1 inches 239 cm
Height (exhaust):	103.1 inches 261 cm
Shiping weight:	5004 lbs 2269 kg
Clearance (front axle):	21 inches 53 cm
Front tread:	49.6 to 79.5 inches 125 to 201 cm
Rear tread:	53.5 to 73.2 inches 135 to 185 cm