New Holland 7840 Specs ( 1996-1998 )
Overview
The New Holland 7840 is a row-crop farm tractor manufactured in Basildon, England, powered by a 6.6L six-cylinder Ford Genesis diesel engine. It features a Rear Type II hitch and was available in multiple configurations including 2WD or 4WD and open ROPS or Comfort Command Cab. Nebraska Tractor Test data for this model recorded a maximum PTO output of 90.4 horsepower and a drawbar performance of 75.2 horsepower.
Ideal Applications
Tested Power and Fuel Performance:
Nebraska Tractor Test 163 recorded a PTO output of 90.4 hp at 2100 RPM and a maximum drawbar power of 75.2 hp with a fuel consumption rate of 5.9 gallons per hour at maximum power.
Transmission and Mechanical Configurations:
This model offered four transmission types including 8-speed constant mesh, 16-speed Dual Power, 12-speed synchronized, and 16-speed ElectroShift, alongside standard power steering and inboard planetary final drives.
Chassis Dimensions and Lifting Capacity:
The tractor is built on a wheelbase ranging from 103 to 106 inches with a rear lift capacity of 6,210 pounds and a shipping weight that reaches 10,274 pounds when equipped with 4WD and a cab.
Production
| Description | Row-Crop tractor / Built in Basildon, England |
|---|---|
| Manufacturer | New Holland |
| 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. |
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) |
New Holland 7840 Height
| Cab | 110 inches (279 cm) |
|---|---|
| Exhaust | 114 inches (289 cm) |
| Hood | 70 inches (177 cm) |
New Holland 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) |
New Holland 7840 attachments
| Description | front-end loader |
|---|
References
| Description | Operator's Manual 5640, 6640, 7740 and 7840 S Range Tractors (42564031) published in 1994 |
|---|
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. |
|---|
Nebraska Tractor Test Results
Test #Nebraska Summary 163
Test Date:
August to September, 1992
Location:
Silsoe Research Institute, Wrest Park, Silsoe Bedford, England MK45 4HS
This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.
Maximum Power & Fuel Consumption
Rated Engine Speed
90.40 hp
N/A lb/hp·hr
Torque Statistics
| Maximum Torque | 279 lb-ft (378 Nm) |
|---|---|
| Torque Rise | 21.5% |
| Torque Rise @ 1600 RPM | 14.0% |
PTO Power Curve
Maximum Power & Fuel Consumption Details
| Condition | HP | kW | RPM | PTO RPM | Fuel gal/hr | Fuel L/hr |
|---|---|---|---|---|---|---|
| Rated Engine Speed | 90.40 | 67.40 | 2070 | 985 | 5.29 | 20.04 |
Varying Power & Fuel Consumption
Click column headers to sort
| Power | RPM | gal/hr | lb/hp·hr | hp·hr/gal | DEF gal/hr |
|---|---|---|---|---|---|
| 90.40 | 2070 | 5.29 | 0.41 | N/A | N/A |
| 79.30 | 2147 | 4.85 | 0.43 | N/A | N/A |
| 59.90 | 2154 | 3.93 | 0.46 | N/A | N/A |
| 40.00 | 2171 | 3.09 | 0.54 | N/A | N/A |
| 19.80 | 2185 | 2.27 | 0.80 | N/A | N/A |
| N/A | 2219 | 1.63 | N/A | N/A | N/A |