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Home / Farm Tractors / Ford Tractors / Ford 7840

Ford 7840 Tractor

The Ford 7840 is a PowerStar 40-series row-crop tractor. This model was manufactured between 1991 and 1995. The Ford 7840 tractor is powered by 401 cu.in (6.6 L) Ford Genesis four stroke six-cylinder liquid-cooled diesel engine with operating power of 100 hp (73.5 kW) at 2100 rev/min.

The Ford 7840 was fitted with 4 types of transmission. Type 1: 8x2 EconoShift constant mesh transmission. Type 2: 16x4 Dual Power transmission with a 2-speed powershift. Type 3: 12x12 Synchro Shift synchronized transmission. Type 4: 16x16 Pulse Command transmission with a 4-speed powershift.

Max. forward speed - 19.2 mph (30.9 kph), maximum reverse speed - 19.1 mph (30.7 kph). The open center hydraulic system includes a gear pump with rated capacity of 9.3 gpm (35.2 lpm). The hydraulic pressure is 182 bar (2650 psi). The Ford 7840 was equipped with 10.0x16 front tires and 18.4x30 rear tires. The wheelbase is 106.3" (2700 mm) for 2WD models, or 103.3" (2623 mm) for 4WD models.

Engine
Engine Model Ford Genesis
Engine Type Four stroke, six-cylinder liquid-cooled diesel
Engine Gross Power, hp (kw) 100.0 (73.5)
Cylinders 6
Engine Bore, in (mm) 4.40 (112)
Engine Stroke, in (mm) 5.00 (127)
Displacement, cu.in (L) 401 (6.59)
Compression Ratio 17.5:1
Firing Order 1-5-3-6-2-4
Low Idle Speed, rpm 725-775
High Idle Speed, rpm 2195-2275
Rated Speed, rpm 2100
Valve Clearance (Intake), in (mm) 0.014-0.018 (0.36-0.46)
Valve Clearance (Exhaust), in (mm) 0.017-0.021 (0.43-0.53)
Coolant Pump Type Impeller
Fan Diameter, in (mm) 20.1 (510)
Fuel Capacity, gal (L) 57.0 (217.6)
Cooling System Capacity, qts (L) 21.8 (20.0)
Engine Oil Capacity, qts (L) 22.5 (20.9)
Electrical System Rating, Volts 12
Alternator Rating, Amps 100/55

Power Take-Off
PTO Operational Type Independent
PTO Horsepower, hp (kW) 90.0 (67.1)
PTO Gears (Standard), rpm 540
PTO / Engine Speed (Standard), rpm 540/1900
PTO Gears (Optional), rpm 1000
PTO / Engine Speed (Optional), rpm 1000/2050

Standard Transmission
Transmission Type EconoShift
Gearbox Type 8F/2R, Constant mesh
Number of Forward Gears 8
Number of Reverse Gears 2
Clutch Type Dry disc
Oil Capacity, qts (L) 69.6 (65.9)
Maximum Forward Speed, mph (kph) 18.8 (30.3)
Maximum Reverse Speed, mph (kph) 9.1 (14.6)

Optional Transmission
Transmission Type Dual Power
Gearbox Type 16F/4R, 2-Speed powershift
Number of Forward Gears 16
Number of Reverse Gears 4
Clutch Type Dry disc
Oil Capacity, qts (L) 69.6 (65.9)
Maximum Forward Speed, mph (kph) 18.8 (30.3)
Maximum Reverse Speed, mph (kph) 9.1 (14.6)

Optional Transmission
Transmission Type Synchro Shift
Gearbox Type 12F/12R, Synchronized
Number of Forward Gears 12
Number of Reverse Gears 12
Clutch Type Dry disc
Maximum Forward Speed, mph (kph) 19.2 (30.9)
Maximum Reverse Speed, mph (kph) 19.1 (30.8)

Optional Transmission
Transmission Type Electro Shift / Pulse Command
Gearbox Type 16F/16R, 4-Speed powershift
Number of Forward Gears 16
Number of Reverse Gears 16
Clutch Type Wet disc
Oil Capacity, qts (L) 64.0 (60.6)
Maximum Forward Speed, mph (kph) 19.2 (30.8)
Maximum Reverse Speed, mph (kph) 19.1 (30.7)


Wheels and Tires
Drive Wheels 2WD/4WD
Steering Configuration Front Steer
Steering System Hydrostatic power
Brakes Type Wet disc, hydraulically actuated
Brake Disc Diameter (overall), in (mm) 8.8 (224)
Parking Brake Transmission type
Front Tire Size 10.0-16
Rear Tire Size 18.4-30

Hydraulic System
Hydraulic System Type (S/SL) Open center
Implement Pump Type Gear
Implement Pump Flow, gpm (Lpm) 9.3 (35.2)
Hydraulic Pressure, Bar (psi) 182 (2650)
Hydraulic System Type (SLE) Closed centre load sensing
Implement Pump Type Variable displacement piston pump
Implement Pump Flow, gpm (Lpm) 19.9 (75.8)
Hydraulic Pressure, Bar (psi) 186 (2700)
Steering Pump Type Fixed displacement gear pump
Steering Pump Flow, gpm (Lpm) 9.2 (34.8)
Steering Pressure, Bar (psi) 145 (2100)
Number of Standard Remote Valves Up to 4 optional
3-Point Hitch Category 2
Draft Sensing or Lift Control (S/SL) Position control and top-link draft sensing
Draft Sensing or Lift Control (SLE) Electronic Draft Control
Standard Lift Capacity 24 (600mm) behind pin (S/SL), lb (kg) 9420 (4270)
Standard Lift Capacity at lift pin (S/SL), lb (kg) 12300 (5580)
Standard Lift Capacity 24 (600mm) behind pin (SLE), lb (kg) 13000 (5897)
Standard Lift Capacity at lift pin (SLE), lb (kg) 9915 (4520)

Dimensions and Weight
Wheel Base (2WD), in (mm) 106.3 (2700)
Wheel Base (4WD), in (mm) 103.3 (2623)
Overall Length (2WD), in (mm) 169.2 (4297)
Overall Length (4WD), in (mm) 171.7 (4361)
Height (Hood), in (mm) 70.3 (1786)
Height (Cab), in (mm) 110.1 (2797)
Width (2WD), in (mm) 83.2 (2112)
Width (4WD), in (mm) 83.7 (2126)
Ground Clearance (2WD), in (mm) 24.5 (620)
Ground Clearance (4WD), in (mm) 22.8 (580)
Turning Radius Without Brakes (2WD), in (mm) 170 (4318)
Turning Radius Without Brakes (4WD), in (mm) 174 (4420)
Weight (2WD, Cab), lb (kg) 9215 (4180)
Weight (4WD, Cab), lb (kg) 10274 (4660)
Weight (2WD, ROPS), lb (kg) 8077 (3663)
Weight (4WD, ROPS), lb (kg) 9135 (4143)

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