Ford 7840
Power
100 hp[P] hp
Production
1991-1995
Engine
6-cylinder 12-valve
Transmission
EconoShift
Drive
2WD/4WD
From the same series:
Introduction
Ford 7840 Row-Crop Tractor
The Ford 7840 is a row-crop tractor produced by Ford in Basildon, England, between 1991 and 1995. As part of the 40 series, it was designed to serve as a versatile utility tractor for various agricultural operations, offering both 2WD and optional MFWD 4WD configurations.
Engine and Performance
The tractor is powered by a 6-cylinder, 12-valve, liquid-cooled engine with a displacement of 401 cubic inches (6.6 liters). It operates at a rated speed of 2100 RPM and produces approximately 100 horsepower. The engine utilizes a 1-5-3-6-2-4 firing order and requires specific valve clearances, with 0.016 inches for intake and 0.019 inches for exhaust when cold.
Transmission Systems
The 7840 features several transmission variants depending on the model specification. Options include the 8-speed constant mesh EconoShift, the 16-speed Dual Power system, the 12-speed synchronized SynchroShift, and the 16-speed ElectroShift/Pulse Command. These systems utilize either dry or wet disc clutches to manage power delivery, with the ElectroShift providing push-button power shifting across two synchronized ratio groups.
Hydraulics and Hitch
The hydraulic system is available in open-center (S/SL) or closed-center load-sensing (SLE) configurations, providing a pump flow of up to 20 gpm (75.7 lpm) on the SLE model. The rear hitch is a Category II type featuring position control and top-link draft sensing. Electronic lower-link sensing is available as an option on the 7840 SLE, with rear lift capacities ranging from 6,210 lbs to 8,710 lbs depending on the specific model and configuration.
Dimensions and Operator Environment
The tractor is built on a wheelbase of 106 inches for the 2WD model and 103 inches for the 4WD version. Operators can choose between a two-post foldable ROPS with a flat-deck platform or the Comfort Command Cab, which includes air conditioning on SL/SLE models. Steering is power-assisted, and braking is handled by mechanical wet disc brakes on SL/SLE models.
Conclusion
The Ford 7840 is a robust and highly configurable row-crop tractor suitable for a wide range of field tasks. Its diverse transmission options and hydraulic capabilities allow it to be tailored to specific operational needs, making it a dependable machine for professional agricultural use.
Production Information of Ford, 7840
- Row-Crop tractor
- Built in Basildon, England
| Manufacturer | Ford |
|---|---|
| Original price | $35,650 (1996) |
Dimension and Tires Information of Ford, 7840
| 2WD Wheelbase | 106 inches [269 cm] |
|---|---|
| 2WD Clearance (front axle) | 23 inches [58 cm] |
| Width | 83 inches [210 cm] |
| 4WD Wheelbase | 103 inches [261 cm] |
| 4WD Clearance (front axle) | 22 inches [55 cm] |
| Length | 176 inches [447 cm] |
| Ag front | 10.00-16 |
|---|---|
| Ag rear | 18.4-34 |
Engine Specifications of Ford, 7840
- Liquid-cooled
- 6-cylinder 12-valve
| Exhaust valve clearance | 0.019 inches (cold) [0.483 mm] |
|---|---|
| Rated RPM | 2100 |
| Idle RPM | 725-2275 |
| Starter volts | 12 |
| Firing order | 1-5-3-6-2-4 |
| Displacement | 401 ci [6.6 L] |
| Oil capacity | 22.1 qts [20.9 L] |
| Compression | 17.5:1 |
| Bore/Stroke | 4.40x4.40 inches [112 x 112 mm] |
| Intake valve clearance | 0.016 inches (cold) [0.406 mm] |
| Intake valve clearance(optional) | 22.7 qts (cab) [21.5 L] |
| Coolant capacity | 21.1 qts [20.0 L] |
Transmission Information of Ford, 7840
Transmission variants 1
- 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.
| Transmission | EconoShift |
|---|---|
| Oil capacity | 69.6 qts [65.9 L] |
| Clutch | Dry disc |
| Type | Constant mesh |
| Gears | 8 forward and 2 reverse |
Transmission variants 2
- 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.
| Transmission | Dual Power |
|---|---|
| Oil capacity | 69.6 qts [65.9 L] |
| Clutch | Dry disc |
| Type | Two-speed power shift |
| Gears | 16 forward and 4 reverse |
Transmission variants 3
- Four 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.
| Transmission | SynchroShift |
|---|---|
| Clutch | Dry disc |
| Type | Synchronized |
| Gears | 12 forward and reverse |
Transmission variants 4
- Four 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.
| Transmission | ElectroShift/Pulse Command |
|---|---|
| Oil capacity | 64 qts [60.6 L] |
| Clutch | Wet disc |
| Type | Four-speed power shift |
| Gears | 16 forward and reverse |
- 8-speed constant mesh
- 16-speed four-speed power shift
- 16-speed two-speed power shift
- 12-speed synchronized
Mechanical Specs of Ford, 7840
- Power steering
- Two-post foldable ROPS with flat-deck platform. Comfort Command Cab optional with air-conditioning (SL/SLE).
| Drive | 4x2 2WD |
|---|---|
| Differential lock | Electro-hydraulic (SLE) |
| Differential lock(optional) | 4x4 MFWD 4WD (optional) |
| Brakes | Mechanical (S) |
| Final drives | Inboard planetary |
Power Information of Ford, 7840
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of Ford, 7840
| Type | Open center (S/SL) |
|---|---|
| Type(optional) | 20 gpm (SLE) [75.7 lpm] |
| Pump flow | 17.4 gpm [65.9 lpm] |
| Pump flow(optional) | Closed center load sensing (SLE) |
| Steering press. | 2100 psi [144.8 bar] |
| Valves | 1 to 4 |
Three-Point Hitch of Ford, 7840
| Rear Type | II |
|---|---|
| Rear Type(optional) | 6,564 lbs (SLE) [2977 kg] |
| Rear Type(optional) | 8,240 lbs (SL optional) [3737 kg] |
| Control | Position control and top-link draft sensing. Electronic lower-link sensing optional on 7840 SLE. |
| Control(optional) | 8,710 lbs (SLE optional) [3950 kg] |
| Rear lift (at 24"/610mm) | 6,210 lbs (SL) [2816 kg] |
Electrical System of Ford, 7840
| Battery CCA | 800 |
|---|---|
| Ground | Negative |
| Batteries | 1 (ROPS) |
| Batteries(optional) | 100 (cab) |
| Charging system | Alternator |
| Battery volts | 12 |
| Battery volts(optional) | 2 (cab) |
| Charging amps | 55 (ROPS) |
Where it sits
With 100 hp[P] HP, the Ford 7840 sits just below 7810 (105 HP) in Ford's range. Its power puts it in the 69th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the Ford 7840 have?
The Ford 7840 delivers 100 hp[P] HP.
What years was the Ford 7840 produced?
The Ford 7840 was produced in 1991-1995.
What engine does the Ford 7840 have?
The Ford 7840 is powered by a 6-cylinder 12-valve engine.
What transmission does the Ford 7840 use?
The Ford 7840 uses a EconoShift transmission.
Is the Ford 7840 4WD?
The Ford 7840 is available in 2WD/4WD.