New Holland 7840
Power
100 hp[P] hp
Production
1996-1998
Engine
6-cylinder 12-valve
Transmission
EconoShift
Drive
2WD/4WD
From the same series:
Introduction
New Holland 7840 Series Tractor
The New Holland 7840 is a row-crop tractor manufactured in Basildon, England, between 1996 and 1998. Positioned as a versatile workhorse, it was designed to meet the requirements of diverse agricultural operations, offering a balance of power and mechanical flexibility.
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, with a compression ratio of 17.5:1. The firing order is 1-5-3-6-2-4, and the engine is maintained by a 12-volt electrical system featuring an alternator for charging.
Transmission and Drivetrain
The 7840 offers multiple transmission configurations to suit varying operational needs. Options include the 8-speed constant mesh EconoShift, the 16-speed Dual Power, the 12-speed synchronized SynchroShift, and the 16-speed ElectroShift/Pulse Command. These transmissions provide a range of speeds and shuttle capabilities, with some models utilizing wet disc clutches for enhanced durability during frequent shifting.
Hydraulics and Hitch
The hydraulic system features a pump flow of 17.4 GPM (65.9 lpm), with the SLE model offering an increased capacity of 20 GPM. It is equipped with Category II rear hitches, providing significant lift capacities ranging from 6,210 lbs to 8,710 lbs depending on the configuration. The hitch system supports position control and top-link draft sensing, with optional electronic lower-link sensing available on specific models.
Mechanical and Dimensions
The tractor is available in 4x2 2WD or optional 4x4 MFWD configurations. It utilizes a power steering system for improved handling and inboard planetary final drives. Operators can choose between a two-post foldable ROPS with a flat-deck platform or the Comfort Command Cab, which includes air-conditioning for extended work periods.
Conclusion
The New Holland 7840 is characterized by its modular transmission options and robust hydraulic capacity, making it a suitable choice for farmers seeking a reliable, mid-range row-crop machine capable of handling varied implements and field conditions.
Production Information of New Holland, 7840
- Row-Crop tractor
- Built in Basildon, England
| Manufacturer | New Holland |
|---|---|
| Original price | $35,650 (1996) |
Dimension and Tires Information of New Holland, 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 New Holland, 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 New Holland, 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 New Holland, 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 New Holland, 7840
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of New Holland, 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 New Holland, 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 New Holland, 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 New Holland 7840 sits just below 8240 (106 HP) in New Holland'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 New Holland 7840 have?
The New Holland 7840 delivers 100 hp[P] HP.
What years was the New Holland 7840 produced?
The New Holland 7840 was produced in 1996-1998.
What engine does the New Holland 7840 have?
The New Holland 7840 is powered by a 6-cylinder 12-valve engine.
What transmission does the New Holland 7840 use?
The New Holland 7840 uses a EconoShift transmission.
Is the New Holland 7840 4WD?
The New Holland 7840 is available in 2WD/4WD.