Ford 6640

1991 - 1995

PowerStar 40 Series

Utility tractor

Manufacturer

Ford

Utility tractor

Built in Basildon, England

Original price was $33,400 in 1998

6640S

8-speed economy

6640SL

12-speed

6640SLE

16-speed premium

Ford 5.0L 4-cyl diesel

Fuel tank

25 gal 94.6 L

52.7 gal (ROPS optional) 199.5 L

46.9 gal (cab optional) 177.5 L

Engine (gross)

90.7 hp 67.6 kW

Engine (net)

85 hp 63.4 kW

PTO (claimed)

76 hp 56.7 kW

Drawbar (tested)

67.18 hp 50.1 kW

PTO (tested)

77.13 hp 57.5 kW

Drive

4x2 2WD

4x4 MFWD 4WD (optional)

Final drives

inboard planetary

Differential lock

mechanical (S)

electro-hydraulic (SL/SLE)

Power steering

Brakes

mechanical (S)

hydraulic wet disc (SL/SLE)

Two-post foldable ROPS. Straddle-mount (6640 S) or raised deck (SL/SLE). Comfort Command Cab optional with air-conditioning (SL/SLE).

Type

open center (S/SL)

closed center load sensing (SLE)

Valves

1 to 4

Pump flow

18.2 gpm 68.9 lpm

21 gpm (SLE) 79.5 lpm

Steering press.

2100 psi 144.8 bar

Rear Type

II

Control

Position control and top-link draft sensing. Electronic lower-link sensing optional on 6640 SLE.

Rear lift (at 24"/610mm)

4200 lbs 1905 kg

4439 lbs (optional) 2013 kg

6210 lbs (SLE) 2816 kg

6564 lbs (SLE optional) 2977 kg

Rear PTO

independent

Rear PTO Type

540

540/1000 OptOptional

Wheelbase

93 inches 236 cm

Weight

7099 to 9121 pounds

Front tire

7.50-16

Rear tire

16.9-30

Ground

negative

Charging system

alternator

ROPS Charging amps

55

Cab Charging amps

100

ROPS Batteries

1

Cab Batteries

2

Battery CCA

800

Battery volts

12

Front-end Loaders published in 1992, by Ford

Front-end Loaders published in 1995, by New Holland

66 to 106 PTO hp PowerStar Tractors published in 1991, by Ford

66 to 106 PTO hp PowerStar Tractors published in 1992, by Ford

Manufacturer

Ford Genesis

Fuel Type

Diesel

Configuration

4-cylinder 8-valve, liquid-cooled

Displacement

304 ci 5.0 L

Bore/Stroke

4.40x5.00 inches 112 x 127 mm

Power (net)

85 hp 63.4 kW

Power (gross)

90.7 hp 67.6 kW

Air cleaner

dual paper elements

Compression

17.5:1

Rated RPM

2200

Idle RPM

725-2375

Torque

337 lb-ft 457.0 Nm

Torque RPM

1200

Firing order

1-3-4-2

Starter volts

12

Coolant capacity

15.3 qts 14.5 L

16.9 qts*With cab 16.0 L

Intake valve clearance

0.016 inches (cold) 0.406 mm

Exhaust valve clearance

0.019 inches (cold) 0.483 mm

Oil capacity

12.1 qts 11.5 L

8-speed constant mesh

16-speed two-speed power shift

12-speed synchronized

16-speed four-speed power shift

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 6640S.

With 16.9-34 rear tires.

Transmission

Dual Power

Type

two-speed power shift

Gears

16 forward and 4 reverse

Clutch

dry disc

Oil capacity

69.6 qts 65.9 L

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.

With 16.9-34 rear tires.

Transmission

SynchroShift

Type

synchronized

Gears

12 forward and reverse

Clutch

dry disc

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.

With 16.9-38 rear tires.

Transmission

ElectroShift/Pulse Command

Type

four-speed power shift

Gears

16 forward and reverse

Clutch

wet disc

Oil capacity

64 qts 60.6 L

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.

With 16.9-38 rear tires.

Ag front

7.50-16

Ag rear

16.9-30

Wheelbase

93 inches 236 cm

Length

162 inches 411 cm

2WD Width

77 inches 195 cm

4WD Width

80 inches 203 cm

2WD Clearance (front axle)

22 inches 55 cm

4WD Clearance (front axle)

20 inches 50 cm

2WD ROPS Shipping

7,099 lbs 3220 kg

4WD ROPS Shipping

8,091 lbs 3670 kg

2WD Cab Shipping

8,129 lbs 3687 kg

4WD Cab Shipping

9,121 lbs 4137 kg

Operating

8,135 lbs (4WD ROPS) 3690 kg

Ballasted

10,368 lbs 4702 kg

Hood

67 inches 170 cm

Cab

107 inches 271 cm

Exhaust

112 inches 284 cm

Diesel 16x4 4WD April 24 - May 11, 1992 Link: OCED Tractor Test 1657 file

PTO performance

Max power

77.13 hp 57.5 kW

Fuel use

4.7 gal/hour 17.8 l/hour

Power at rated engine speed

76.75 hp 57.2 kW

Fuel use

4.7 gal/hour 17.8 l/hour

Power at rated PTO speed

75.63 hp 56.4 kW

Fuel use

4.5 gal/hour 17.0 l/hour

Drawbar performance

Max power

67.18 hp 50.1 kW

Fuel use

4.7 gal/hour 17.8 l/hour

Gear 5-Low used for power test.

Max pull

10,512 lbs 4768 kg

Gear 2H used for pull test.

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