John Deere 1840 tractor specifications

1979 - 1982

1979 - 1982 Utility tractor

Series:

Series:1640 ← 1840 → 2040

1979 - 1987

Utility tractor

Series:

1640

→ 1840

Production

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

John Deere 1640 Power

John Deere 1640 Power
Engine:	62 hp 46.2 kW
PTO (claimed):	54 hp 40.3 kW

John Deere 1640 Engine

John Deere 1640 Engine
John Deere 3.9L 4-cyl diesel
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
	4x4 MFWD 4WD
Final drives:	planetary
Steering:	power
Brakes:	hydraulic disc
Cab:	Four-post ROPS. Cab available with heater. SoundGard (SG2) cab available after 1981.
Transmissions:	8-speed
	16-speed
Transmission details ...

Capacity

Capacity
Fuel:	25.1 gal 95.0 L
Hydraulic system:	14.5 gal 54.9 L

Hydraulics

Hydraulics
Type:	closed center constant pressure
Capacity:	14.5 gal 54.9 L
Pressure:	2466 psi 170.0 bar
Pump flow:	12.4 gpm 46.9 lpm

Tractor hitch

Tractor hitch
Rear Type:	II
Rear lift:	6768 lbs 3069 kg

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	540
Engine RPM:	540@2400

Dimensions & Tires

Dimensions & Tires
2WD Wheelbase:	89.7 inches 227 cm
4WD Wheelbase:	80 inches 203 cm
Weight:	7409 to 8004 pounds
Front tire:	7.50-18
2WD Rear tire:	13.6/12-38
Full dimensions and tires ...

1640 Serial Numbers

1640 Serial Numbers
1980:	358998
1981:	393048
1982:	433037
how to read serial numbers...

Electrical

Electrical
Ground:	negative
Charging system:	alternator
Charging amps:	55
Batteries:	2
Battery volts:	12

Production

Production Manufacturer:John Deere
Type:Utility tractor
Factory:Mannheim, Baden-Württemberg, Germany
The Canadian-market 1840 is similar to the US 2440 model.

John Deere 1840 Power

John Deere 1840 Power Engine (net):70 hp
52.2 kW
PTO (claimed):60 hp
44.7 kW

John Deere 1840 Engine

John Deere 1840 Engine John Deere 3.9L 4-cyl diesel Fuel tank:25.1 gal
95.0 L
Engine details ...

1979 - 1982

Utility tractor

Series:

1640 ←

1840

→ 2040

Engine Detail

Engine Detail
John Deere
diesel
4-cylinder
liquid-cooled
Displacement:	239 ci 3.9 L
Bore/Stroke:	4.19x4.33 inches 106 x 110 mm
Compression:	16.8:1
Rated RPM:	2500
Idle RPM:	800-2660
Operating RPM:	1300-2500
Torque:	170 lb-ft 230.5 Nm
Torque RPM:	1300
Firing order:	1-3-4-2
Starter volts:	12
Intake valve clearance:	0.014 inches 0.356 mm
Exhaust valve clearance:	0.018 inches 0.457 mm

Mechanical

Mechanical Chassis:4x2 2WD
4x4 MFWD 4WD
Final drives:planetary
Differential lock:mechanical rear
Steering:power
Brakes:wet disc
Cab:Open operator station. Cab optional.
Transmissions:8-speed unsynchronized gear
8-speed partially synchronized
16-speed two-speed power shift
Transmission details ...

1979 - 1982

Utility tractor

Series:

1640 ←

1840

→ 2040

Transmissions overview

Transmissions overview
8-speed unsynchronized gear
8-speed partially synchronized
16-speed two-speed power shift

Transmission

Transmission
Type:	unsynchronized gear
Gears:	8 forward and 4 reverse
Clutch:	dry disc
Four gears in two ranges, plus reverse range.

Speeds

Speeds
With 15.5-38 rear tires.

Transmission

Transmission
Transmission:	Top-Shaft Synchronized
Type:	partially synchronized
Gears:	8 forward and 4 reverse
Four synchronized gears in two ranges, plus reverse range.

Transmission

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

Hydraulics

Hydraulics Type:closed center

Tractor hitch

Tractor hitch Rear Type:II/I
Control:position and draft control

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:independent
Rear RPM:540 (1.375)
540/1000 (1.375)

Dimensions & Tires

Dimensions & Tires Wheelbase:89.7 inches
227 cm
Weight:5476 lbs
2483 kg
Front tire:7.50-16
Rear tire:15.5-38
Full dimensions and tires ...

1979 - 1982

Utility tractor

Series:

1640 ←

1840

→ 2040

John Deere 1840 Tires

John Deere 1840 Tires
Ag front:	7.50-16
Ag rear:	15.5-38
Ag rear:	16.9-30

Dimensions

Dimensions
Wheelbase:	89.7 inches 227 cm
Length:	147 inches 373 cm
Height (hood):	62 inches 157 cm
Weight:	5476 lbs 2483 kg

Electrical

Electrical Ground:negative
Charging system:alternator
Charging amps:33
55*Standard with cab, optional on open station.
Charging volts:14
Batteries:2
Battery volts:12