New Holland 7840

New Holland 7840 Row-Crop tractor Technical Specifications

New Holland 7840 is a Row-Crop tractor that was produced by the John Deere between 1996 – 1998.

Below you will find detailed technical specifications for New Holland 7840 covering engine types, horsepower ratings, weight, height, fuel type and tank volume, oil capacity and type, hydraulic system diagram, wiring diagram, battery specs, etc.

New Holland 7840 Production














Manufacturer:
Manufacturer: New Holland
Type: Row-Crop tractor
Factory: Basildon, England
Original price: $35,650 (1996)


New Holland 7840 Power










Engine:
PTO (claimed): 90 hp
67.1 kW
Drawbar (tested): 75.2 hp
56.1 kW
PTO (tested): 90.4 hp
67.4 kW

New Holland 7840 Electrical

























Ground: negative
Charging system: alternator
Charging amps: 55 (ROPS)
  100 (cab)
Batteries: 1 (ROPS)
  2 (cab)
Battery CCA: 800
Battery volts: 12

New Holland 7840 Mechanical








































Chassis: 4×2 2WD
  4×4 MFWD 4WD (optional)
Final drives: inboard planetary
Differential lock: electro-hydraulic (SLE)
Steering: hydrostatic power
Brakes: mechanical (S)
  hydraulic wet disc (SL/SLE)
Cab: Two-post foldable ROPS with flat-deck platform. Comfort Command Cab optional with air-conditioning (SL/SLE).
Transmissions: 8-speed constant mesh
  16-speed two-speed power shift
  12-speed synchronized
  16-speed four-speed power shift

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
75.7 lpm (SLE)
Steering press.: 2100 psi
144.8 bar

Tracktor Hitch



















Rear Type: II
Control: Position control and top-link draft sensing. Electronic lower-link sensing optional on 7840 SLE.
Rear lift (at 24″/610mm): 6,210 lbs
2816 kg (SL)
  8,240 lbs
3737 kg (SL optional)
  6,564 lbs
2977 kg (SLE)
  8,710 lbs
3950 kg (SLE optional)

Power Take-off (PTO)







Rear PTO: independent
Rear RPM: 540/1000

New Holland 7840 Engine detail











































Engine Detail
Ford Genesis
diesel
6-cylinder 12-valve
liquid-cooled
Displacement: 401 ci
6.6 L
Bore/Stroke: 4.40×4.40 inches
112 x 112 mm
Compression: 17.5:1
Rated RPM: 2100
Idle RPM: 725-2275
Firing order: 1-5-3-6-2-4
Starter volts: 12
Coolant capacity: 21.1 qts
20.0 L
  22.7 qts
21.5 L (cab)
Intake valve clearance: 0.016 inches
0.406 mm (cold)
Exhaust valve clearance: 0.019 inches
0.483 mm (cold)



New Holland 7840 Transmission overview

Engine Oil

















Transmission: EconoShift
Type: constant mesh
Gears: 8 forward and 2 reverse
Clutch: dry disc
Oil capacity: 69.6 qts
65.9 L
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.

New Holland 7840 Dimensions



















2WD Wheelbase: 106 inches
269 cm
4WD Wheelbase: 103 inches
261 cm
Length: 176 inches
447 cm
Width: 83 inches
210 cm
2WD Clearance (front axle): 23 inches
58 cm
4WD Clearance (front axle): 22 inches
55 cm
















New Holland 7840 Weight
2WD ROPS Shipping: 8,076 lbs
3663 kg
4WD ROPS Shipping: 9,134 lbs
4143 kg
2WD Cab Shipping: 9,215 lbs
4179 kg
4WD Cab Shipping: 10,274 lbs
4660 kg













New Holland 7840 Height
Hood: 70 inches
177 cm
Cab: 110 inches
279 cm
Exhaust: 114 inches
289 cm

New Holland 7840 Tests
























Nebraska Tractor Test 163
Diesel 16-speed 4WD
September 1992 – 1992,
PTO performance
Power at rated engine speed: 90.4 hp
67.4 kW
Fuel use: 5.3 gal/hour
20.1 l/hour
Drawbar performance
Max power: 75.2 hp
56.1 kW
Fuel use: 5.9 gal/hour
22.3 l/hour

FAQ

Is New Holland 7840 a good tractor?

The New Holland 7840 is one of the great tractors in the New Holland stable, and it has earned New Holland a fantastic reputation.

How much oil does a New Holland 7840 take?

Check out the New Holland 7840 oil capacity and oil type in the engine specs section as it may vary across the engines. Keep in mind, that older models might have their oil capacity increased over time. You may compare between the early and late oil capacity.

Do tractors have VIN numbers?

Every tractor has a VIN number. The number is usually engraved below the driver’s seat. Tractor manufacturers put the number in different places on the tractor body.

What was the last year New Holland made the 7740

The New Holland 7840 was an agricultural tractor model made from 1996 – 1998

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