Ford
Ford 7840
The Ford 7840 is a row-crop tractor produced from 1991 to 1995 as part of the PowerStar 40 Series. It was built in Basildon, England. The tractor features a Ford Genesis 6.6L 6-cylinder 12-valve liquid-cooled diesel engine with 90 hp PTO power. It offers multiple transmission options including 8-speed constant mesh, 12-speed synchronized, and 16-speed power shift variants. The 7840 has 2WD and optional 4WD drive configurations, with mechanical and hydraulic brake options. It includes open center and closed center load sensing hydraulic systems, and a rear Type II hitch with position control and draft sensing. The tractor's dimensions include a 2WD wheelbase of 106 inches and a length of 176 inches. It has a fuel tank capacity of 57.5 gallons and various weight configurations depending on cab and drive options. Electrical system features a negative ground, alternator charging system, and 12-volt battery setup. The 7840 was offered in variants 7840S, 7840SL, and 7840SLE with different transmission and feature packages.
Power100 hp[P]
Founded1991 - 1995
Model7840
Technical Specifications
Detailed specifications and technical data for Ford 7840
Power
| PTO (tested) | 90.4 hp (67.4 kW) |
|---|---|
| PTO (claimed) | 90 hp (67.1 kW) |
| Drawbar (tested) | 75.2 hp (56.1 kW) |
Engine
| Type | diesel |
|---|---|
| Cooling | liquid-cooled |
| Idle RPM | 725-2275 |
| Cylinders | 6-cylinder 12-valve |
| Fuel tank | 57.5 gal (217.6 L) |
| Rated RPM | 2100 |
| Bore/Stroke | 4.40x4.40 inches (112 x 112 mm) |
| Compression | 17.5:1 |
| Displacement | 401 ci (6.6 L) |
| Engine model | Ford Genesis |
| Firing order | 1-5-3-6-2-4 |
| Oil capacity | 22.1 qts (20.9 L) |
| Starter volts | 12 |
| Coolant capacity | 21.1 qts (20.0 L), 22.7 qts (cab) (21.5 L) |
| Intake valve clearance | 0.016 inches (cold) (0.406 mm) |
| Exhaust valve clearance | 0.019 inches (cold) (0.483 mm) |
Height
| Cab | 110 inches (279 cm) |
|---|---|
| Hood | 70 inches (177 cm) |
| Exhaust | 114 inches (289 cm) |
Weight
| 2WD Cab Shipping | 9,215 lbs (4179 kg) |
|---|---|
| 4WD Cab Shipping | 10,274 lbs (4660 kg) |
| 2WD ROPS Shipping | 8,076 lbs (3663 kg) |
| 4WD ROPS Shipping | 9,134 lbs (4143 kg) |
Variants
| 7840S | 8-speed economy |
|---|---|
| 7840SL | 12-speed |
| 7840SLE | 16-speed premium |
Electrical
| Ground | negative |
|---|---|
| Batteries | 1 (ROPS), 2 (cab) |
| Battery CCA | 800 |
| Battery volts | 12 |
| Charging amps | 55 (ROPS), 100 (cab) |
| Charging system | alternator |
Hydraulics
| Type | open center (S/SL), closed center load sensing (SLE) |
|---|---|
| Valves | 1 to 4 |
| Pump flow | 17.4 gpm (65.9 lpm), 20 gpm (SLE) (75.7 lpm) |
| Steering pressure | 2100 psi (144.8 bar) |
Mechanical
| ROPS | Two-post foldable ROPS with flat-deck platform. Comfort Command Cab optional with air-conditioning (SL/SLE). |
|---|---|
| Drive | 4x2 2WD, 4x4 MFWD 4WD (optional) |
| Brakes | mechanical (S), hydraulic wet disc (SL/SLE) |
| Final drives | inboard planetary |
| Differential lock | electro-hydraulic (SLE) |
Production
| Type | Row-Crop tractor |
|---|---|
| Series | PowerStar 40 Series |
| Built in | Basildon, England |
| Years made | 1991 - 1995 |
| Original price | $35,650 (1996) |
Transmission
| Transmission options | 8-speed constant mesh, 16-speed two-speed power shift, 12-speed synchronized, 16-speed four-speed power shift |
|---|---|
| 12-speed synchronized | Typesynchronized Gears12 forward and reverse NotesFour gears (1-4) in three ranges (L/M/H) with right-hand shuttle lever. Gear shifts are synchronized. Shifts between medium and high ranges are synchronized, but the tractor should be stopped to shift to or from low range. Sychronized shuttle shifting. The 12-speed SynchroShift was standard on the 7840 SL. Dual power was an option with the SynchroShift, turning it into a 24-speed transmission. Clutchdry disc TransmissionSynchroShift |
| 8-speed constant mesh | Typeconstant mesh Gears8 forward and 2 reverse NotesFour 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. Clutchdry disc Oil capacity69.6 qts (65.9 L) TransmissionEconoShift |
| 16-speed two-speed power shift | Typetwo-speed power shift Gears16 forward and 4 reverse NotesDual 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. Clutchdry disc Oil capacity69.6 qts (65.9 L) TransmissionDual Power |
| 16-speed four-speed power shift | Typefour-speed power shift Gears16 forward and reverse NotesFour power shift gears arranged in two synchronized ratio groups (1-4 and 5-8). Two synchronized ranges (low/high) and right-hand shuttle. Clutch must be used to shift range or move between the lower (1-4) and higher (5-8) gear ratio groups. Push-button power shifting between the four gears in a ratio group. Push-button de-clutching on the shuttle lever allow shifting without the foot clutch. The 16 power shift was standard on the 7840 SLE. Clutchwet disc Oil capacity64 qts (60.6 L) TransmissionElectroShift/Pulse Command |
Tractor hitch
| Control | Position control and top-link draft sensing. Electronic lower-link sensing optional on 7840 SLE. |
|---|---|
| Rear Type | II |
| Rear lift (at 24"/610mm) | 6,210 lbs (SL) (2816 kg), 8,240 lbs (SL optional) (3737 kg), 6,564 lbs (SLE) (2977 kg), 8,710 lbs (SLE optional) (3950 kg) |
Dimensions & Tires
| Width | 83 inches (210 cm) |
|---|---|
| Length | 176 inches (447 cm) |
| Weight | 8076 to 10274 pounds |
| Rear tire | 18.4-34 |
| Front tire | 10.00-16 |
| 2WD Wheelbase | 106 inches (269 cm) |
| 4WD Wheelbase | 103 inches (261 cm) |
| 2WD Clearance (front axle) | 23 inches (58 cm) |
| 4WD Clearance (front axle) | 22 inches (55 cm) |
Power Take-off (PTO)
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/1000 |