JD 1840 Engine Technical Data
Engine Model ……………………. John Deere
Engine Type ……………………. 4 Cycle, 4-cylinder diesel
Number of Cylinders ……………………. 4
Displacement, cu in (L) ……………………. 219.4 (3.6)
Engine Bore, in (mm) ……………………. 4.02 (102.0)
Engine Stroke, in (mm) ……………………. 4.33 (110.0)
Aspiration ……………………. Natural
Compression ……………………. 16.2:1
Rated Engine Power, hp (kW) ……………………. 68.0 (50.7)
Rated Engine Speed, rpm ……………………. 2500
Low Idle Speed, rpm ……………………. 950
High Idle Speed, rpm ……………………. 2700
Firing Order ……………………. 1-3-4-2
Air Cleaner ……………………. Dry type
Valve Clearance (Intake), in (mm) ……………………. 0.014
(0.356)
Valve Clearance (Exhaust), in (mm) ……………………. 0.018
(0.457)
Fuel Tank Capacity, gal (L) ……………………. 19.5 (74.0)
Oil Capacity, qts (L) ……………………. 6.0 (5.7)
Coolant Capacity, qts (L) ……………………. 12.0 (11.4)
Electrical System Rating, Volts ……………………. 12
Charging System ……………………. Alternator
John Deere 1840 Power Take-Off
PTO Operational Type (Std) ……………………. Live
PTO Operational Type (Opt) ……………………. Independent
PTO Horsepower, hp (kW) ……………………. 60.0 (45.0)
PTO Speed, rpm ……………………. 540
PTO / Engine Speed, rpm ……………………. 540/2100
JD 1840 Transmission
Transmission Type (Std) ……………………. 8F/4R, Collar shift
Number of Forward Gears ……………………. 8
Number of Reverse Gears ……………………. 4
Clutch ……………………. Dry Disc
Maximum Speed (Forward), mph (kph) ……………………. 17.3 (27.8)
Maximum Speed (Reverse), mph (kph) ……………………. 6.9 (11.1)
Oil Capacity, qts (L) ……………………. 58.0 (55.0)
Transmission Type (Opt) ……………………. 16F/8R, 2-Speed
powershift
Number of Forward Gears ……………………. 16
Number of Reverse Gears ……………………. 8
Clutch ……………………. Dry Disc
Maximum Speed (Forward), mph (kph) ……………………. 17.3 (27.8)
Maximum Speed (Reverse), mph (kph) ……………………. 6.9 (11.1)
Service Brake ……………………. Wet disc
John Deere 1840 Wheels and Tires
Drive Wheels ……………………. 2WD/4WD
Steering Configuration ……………………. Front Steer
Steering System ……………………. Hydrostatic power
Front Tire Size ……………………. 6.00-16
Rear Tire Size ……………………. 16.9-28
Front Tread, in (mm) ……………………. 49-88 (1240-2230)
Rear Tread, in (mm) ……………………. 50-96 (1270-2430)
JD 1840 Hydraulics and Hitch
Hydraulic System Type ……………………. Closed center
Implement Pump Flow, gpm (Lpm) ……………………. 6.1 (22.7)
Hydraulic Pressure, Bar (psi) ……………………. 155 (2550)
Hydraulic Capacity, gal (L) ……………………. 10.0 (37.8)
Number of Standard Remote Valves ……………………. 1
3-Point Hitch Category ……………………. 2
Draft Sensing or Lift Control ……………………. Position control
and lower-link draft sensing
Standard Lift Capacity 24″ behind pin, lb (kg) …………………….
2400 (1090)
John Deere 1840 Dimensions and Weight
Wheelbase (Std), in (mm) ……………………. 85.8 (2170)
Wheelbase (Opt), in (mm) ……………………. 79.5 (2010)
Length, in (mm) ……………………. 139.5 (3540)
Height (Hood), in (mm) ……………………. 61.3 (1550)
Height (Exhaust), in (mm) ……………………. 101.7 (2580)
Width, in (mm) ……………………. 69.5 (1760)
Ground Clearance, in (mm) ……………………. 25.4 (640)
Weight, lb (kg) ……………………. 4750 (2155)