Introduction
New Holland 6640 Utility Tractor
The New Holland 6640 is a utility tractor produced in Basildon, England, between 1996 and 1998. It belongs to the 6640 series and serves as a versatile machine for diverse agricultural operations, offering various configurations to suit specific farm requirements.
Engine and Performance
The tractor is powered by a 5.0-liter, 4-cylinder, 8-valve liquid-cooled engine. It produces a gross power output of 90.7 hp (67.6 kW) and a net power of 85 hp (63.4 kW). The engine generates 337 lb-ft (457.0 Nm) of torque at a rated speed of 1200 RPM, providing consistent pulling power for field tasks.
Transmission Systems
Multiple transmission options were available, ranging from the 8-speed EconoShift constant mesh to the 16-speed ElectroShift/Pulse Command with power shift capabilities. These systems include synchronized ranges and shuttle shifting to facilitate directional changes. Clutch types vary by model, with dry disc clutches used in mechanical and synchro versions, and wet disc clutches in the ElectroShift variants.
Hydraulics and Hitch
The hydraulic system is available in open-center (S/SL models) or closed-center load-sensing (SLE models) configurations, with pump flows reaching up to 21 gpm (79.5 lpm) on the SLE. The rear hitch is a Category II type featuring position control and top-link draft sensing, with electronic lower-link sensing as an option on the SLE model. The lift capacity is rated at 4200 lbs (1905 kg) at the 24-inch lift point, with higher capacities available on specific configurations.
Mechanical and Dimensions
The 6640 is built on a chassis with a 93-inch wheelbase and is available in 2WD or optional 4WD (MFWD) configurations. It utilizes inboard planetary final drives and hydraulic wet disc brakes on higher-spec models. Operator environments include a two-post foldable ROPS or the optional Comfort Command Cab, which includes air-conditioning for improved working conditions.
Conclusion
The New Holland 6640 is a robust utility tractor designed for operators requiring a balance of power and mechanical flexibility. With its varied transmission choices and hydraulic configurations, it is well-suited for general farm work, from tillage to transport.
Production Information of New Holland, 6640
- Original price was $33,400 in 1998
- Utility tractor
- Built in Basildon, England
| Manufacturer | New Holland |
|---|
Dimension and Tires Information of New Holland, 6640
| Wheelbase | 93 inches [236 cm] |
|---|---|
| 2WD Clearance (front axle) | 22 inches [55 cm] |
| 4WD Width | 80 inches [203 cm] |
| Length | 162 inches [411 cm] |
| 4WD Clearance (front axle) | 20 inches [50 cm] |
| 2WD Width | 77 inches [195 cm] |
| Ag front | 7.50-16 |
|---|---|
| Ag rear | 16.9-30 |
Engine Specifications of New Holland, 6640
- Liquid-cooled
- 4-cylinder 8-valve
| Starter volts | 12 |
|---|---|
| Firing order | 1-3-4-2 |
| Exhaust valve clearance | 0.019 inches (cold) [0.483 mm] |
| Power (gross) | 90.7 hp [67.6 kW] |
| Coolant capacity | 15.3 qts [14.5 L] |
| Compression | 17.5:1 |
| Rated RPM | 2200 |
| Air cleaner | Dual paper elements |
| Displacement | 304 ci [5.0 L] |
| Power (net) | 85 hp [63.4 kW] |
| Oil capacity | 12.1 qts [11.5 L] |
| Bore/Stroke | 4.40x5.00 inches [112 x 127 mm] |
| Torque RPM | 1200 |
| Torque RPM(optional) | 16.9 qts [16.0 L] |
| Intake valve clearance | 0.016 inches (cold) [0.406 mm] |
| Torque | 337 lb-ft [457.0 Nm] |
| Idle RPM | 725-2375 |
With cab
Transmission Information of New Holland, 6640
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 6640S.
| 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 6640S.
| 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. Synchronized shuttle shifting. The 12-speed SynchroShift was standard on the 6640 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 6640 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, 6640
- Power steering
- Two-post foldable ROPS. Straddle-mount (6640 S) or raised deck (SL/SLE). Comfort Command Cab optional with air-conditioning (SL/SLE).
| Brakes | Mechanical (S) |
|---|---|
| Drive | 4x2 2WD |
| Drive(optional) | Electro-hydraulic (SL/SLE) |
| Differential lock | Mechanical (S) |
| Differential lock(optional) | 4x4 MFWD 4WD (optional) |
| Differential lock(optional) | Hydraulic wet disc (SL/SLE) |
| Final drives | Inboard planetary |
Power Information of New Holland, 6640
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540 |
| Rear PTO Type(optional) | 540/1000 |
Hydraulics Specifications of New Holland, 6640
| Type | Open center (S/SL) |
|---|---|
| Type(optional) | 21 gpm (SLE) [79.5 lpm] |
| Pump flow | 18.2 gpm [68.9 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, 6640
| Rear Type | II |
|---|---|
| Rear Type(optional) | 6210 lbs (SLE) [2816 kg] |
| Rear Type(optional) | 4439 lbs (optional) [2013 kg] |
| Control | Position control and top-link draft sensing. Electronic lower-link sensing optional on 6640 SLE. |
| Control(optional) | 6564 lbs (SLE optional) [2977 kg] |
| Rear lift (at 24"/610mm) | 4200 lbs [1905 kg] |
Electrical System of New Holland, 6640
| Battery CCA | 800 |
|---|---|
| Ground | Negative |
| ROPS Batteries | 1 |
| Cab Charging amps | 100 |
| Charging system | Alternator |
| Battery volts | 12 |
| Cab Batteries | 2 |
| ROPS Charging amps | 55 |
Where it sits
With 90 HP, the New Holland 6640 sits between 5640 (78 HP) and 7740 (100 HP) in New Holland's range. Its power puts it in the 62th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the New Holland 6640 have?
The New Holland 6640 delivers 90 HP.
What years was the New Holland 6640 produced?
The New Holland 6640 was produced in 1996-1998.
What engine does the New Holland 6640 have?
The New Holland 6640 is powered by a 4-cylinder 8-valve engine.
What transmission does the New Holland 6640 use?
The New Holland 6640 uses a EconoShift transmission.
Is the New Holland 6640 4WD?
The New Holland 6640 is available in 2WD/4WD.