Production
| Description | Row-Crop tractor / Built in Basildon, England |
|---|---|
| Manufacturer | Ford |
| Original price | $35,650 (1996) |
Engine
| Engine type | Ford 6.6L 6-cyl diesel |
|---|---|
| Fuel tank | 57.5 gal (217.6 L) |
| Bore/Stroke | 4.40x4.40 inches (112 x 112 mm) |
| Compression | 17.5:1 |
| Coolant capacity | 21.1 qts (20.0 L) |
| Description | Ford Genesis / diesel / 6-cylinder 12-valve / liquid-cooled |
| Displacement | 401 ci (6.6 L) |
| Exhaust valve clearance | 0.019 inches (cold) (0.483 mm) |
| Firing order | 1-5-3-6-2-4 |
| Idle RPM | 725-2275 |
| Intake valve clearance | 0.016 inches (cold) (0.406 mm) |
| Rated RPM | 2100 |
| Starter volts | 12 |
| Oil capacity | 22.1 qts (20.9 L) |
| Drawbar (tested) | 75.2 hp (56.1 kW) |
| PTO (claimed) | 90 hp (67.1 kW) |
| PTO (tested) | 90.4 hp (67.4 kW) |
Transmission
| Clutch | dry disc / dry disc / dry disc / wet disc |
|---|---|
| Description | Four gears (1-4), plus reverse, in two ranges (L/H). Optional creeper provided a third range. Tractor must be stopped and clutch used to shift gears or range. The eight-speed transmission was only used on the 7840S. / Dual Power adds a two-speed power shift between direct drive and the lower Dual Power range to the basic eight-speed transmission. The Dual Power range is engaged by a switch on the dashboard. Dual Power was an option on the 7840S. |
| Gears | 8 forward and 2 reverse / 16 forward and 4 reverse / 12 forward and reverse / 16 forward and reverse |
| Oil capacity | 69.6 qts (65.9 L) / 69.6 qts (65.9 L) / 64 qts (60.6 L) |
| Transmission | EconoShift / Dual Power / SynchroShift / ElectroShift/Pulse Command |
| Type | constant mesh / two-speed power shift / synchronized / four-speed power shift |
| Transmission type | 8-speed constant mesh / 16-speed two-speed power shift / 12-speed synchronized / 16-speed four-speed power shift |
| Transmission type | 8-speed constant mesh / 16-speed two-speed power shift / 12-speed synchronized / 16-speed four-speed power shift |
Mechanical
| Brakes | mechanical (S) |
|---|---|
| Cab | Two-post foldable ROPS with flat-deck platform. Comfort Command Cab optional with air-conditioning (SL/SLE). |
| Description | Power steering |
| Differential lock | electro-hydraulic (SLE) |
| Drive | 4x2 2WD |
| Final drives | inboard planetary |
Hydraulics
| Pump flow | 17.4 gpm (65.9 lpm) |
|---|---|
| Steering press. | 2100 psi (144.8 bar) |
| Type | open center (S/SL) |
| Valves | 1 to 4 |
Hitch
| Control | Position control and top-link draft sensing. Electronic lower-link sensing optional on 7840 SLE. |
|---|---|
| Rear lift (at 24"/610mm) | 6,210 lbs (SL) (2816 kg) |
| Rear Type | II |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/1000 |
Electrical
| Batteries | 1 (ROPS) |
|---|---|
| Battery CCA | 800 |
| Battery volts | 12 |
| Charging amps | 55 (ROPS) |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| 2WD Clearance (front axle) | 23 inches (58 cm) |
|---|---|
| 2WD Wheelbase | 106 inches (269 cm) |
| 4WD Clearance (front axle) | 22 inches (55 cm) |
| 4WD Wheelbase | 103 inches (261 cm) |
| Length | 176 inches (447 cm) |
| Width | 83 inches (210 cm) |
| 2WD Wheelbase | 106 inches (269 cm) |
| 4WD Wheelbase | 103 inches (261 cm) |
| Front tire | 10.00-16 |
| Rear tire | 18.4-34 |
| Weight | 8076 to 10274 pounds |
| Ag front | 10.00-16 |
| Ag rear | 18.4-34 |
7840 Serial Numbers
| 1991 | BC68791 |
|---|---|
| 1992 | BD02865 |
| 1993 | BD35935 |
| 1994 | BD65544 |
| 1995 | BD98440 |
| 1996 | 022132B |
| Description | FAQ: How to read a serial number table. |
| Location: | Data plate inside hood. |
Ford 7840 Height
| Cab | 110 inches (279 cm) |
|---|---|
| Exhaust | 114 inches (289 cm) |
| Hood | 70 inches (177 cm) |
Ford 7840 Weight
| 2WD Cab Shipping | 9,215 lbs (4179 kg) |
|---|---|
| 2WD ROPS Shipping | 8,076 lbs (3663 kg) |
| 4WD Cab Shipping | 10,274 lbs (4660 kg) |
| 4WD ROPS Shipping | 9,134 lbs (4143 kg) |
Ford 7840 attachments
| Description | front-end loader |
|---|
Nebraska Tractor Test 163
| Description | Diesel 16-speed 4WDSeptember 1992 - 1992, / PTO performance / Drawbar performance |
|---|---|
| Fuel use | 5.3 gal/hour (20.1 l/hour) / 5.9 gal/hour (22.3 l/hour) |
| Max power | 75.2 hp (56.1 kW) |
| Power at rated engine speed | 90.4 hp (67.4 kW) |
References
| Description | Front-end Loaders published in 1992, by Ford / Front-end Loaders published in 1995, by New Holland / 66 to 106 PTO hp PowerStar Tractors published in 1991, by Ford / 66 to 106 PTO hp PowerStar Tractors published in 1992, by Ford |
|---|
Speeds
| Description | With 16.9-34 rear tires. / With 16.9-34 rear tires. / With 16.9-38 rear tires. / With 16.9-38 rear tires. |
|---|
Variants
| 7840S | 8-speed economy |
|---|---|
| 7840SL | 12-speed |
| 7840SLE | 16-speed premium |