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Home / Farm Tractors / Ford Tractors / Ford 6640

Ford 6640 Tractor

The Ford 6640 is a Powerstar 40 series utility tractor. This model was manufactured between 1991 and 1995. The Ford 6640 tractor is powered by 304 cubic inches (5 L) Ford Genesis four stroke 4-cylinder liquid-cooled diesel engine with a maximum power of 85 hp (62.5 kw) at 2200 rev/min.

The Ford 6640 is fitted with 4 transmission options: 8x2 EconoShift constant mesh transmission, 16x4 Dual power transmission, 12x12 Synchro shift transmission, and 16x16 Pulse command transmission. The maximum travel speed (forward/reverse): 19.2 mph (30.9 kph).

The open center hydraulic system includes a gear pump with rated fluid flow of 9.6 gpm (36.8 lpm). The hydraulic system pressure is 176 bar (2550 psi). The Ford 6640 is equipped with 7.50x16 front tyres and 16.9x30 rear tyres. The wheel base is 92.1" (2340 mm) for models with 2WD (4x2), and 93" (2360 mm) for models with 4WD (4x4).

Engine
Engine Model Ford Genesis
Engine Type Four stroke, 4-cylinder liquid-cooled diesel
Engine Gross Power, hp (kw) 85.0 (62.5)
Cylinders 4
Engine Bore, in (mm) 4.40 (112)
Engine Stroke, in (mm) 5.00 (127)
Displacement, cu.in (L) 304 (4.99)
Compression Ratio 17.5:1
Firing Order 1-3-4-2
Low Idle Speed, rpm 725-775
High Idle Speed, rpm 2295-2375
Rated Speed, rpm 2200
Valve Clearance (Intake), in (mm) 0.014-0.018 (0.36-0.46)
Valve Clearance (Exhaust), in (mm) 0.017-0.021 (0.43-0.53)
Coolant Pump Type Impeller
Fan Diameter, in (mm) 18.9 (480)
Fuel Capacity, gal (L) 25.0 (94.6)
Cooling System Capacity, qts (L) 15.4 (14.5)
Engine Oil Capacity, qts (L) 12.2 (11.4)
Electrical System Rating, Volts 12
Alternator Rating, Amps 100/55

Power Take-Off
PTO Operational Type Independent
PTO Horsepower, hp (kW) 76.0 (56.7)
PTO Gears (Standard), rpm 540
PTO / Engine Speed (Standard), rpm 540/1900
PTO Gears (Optional), rpm 1000
PTO / Engine Speed (Optional), rpm 1000/2050

Standard Transmission
Transmission Type EconoShift
Gearbox Type 8F/2R, Constant mesh
Number of Forward Gears 8
Number of Reverse Gears 2
Clutch Type Dry disc
Oil Capacity, qts (L) 69.6 (65.9)
Maximum Forward Speed, mph (kph) 18.8 (30.3)
Maximum Reverse Speed, mph (kph) 9.1 (14.6)

Optional Transmission
Transmission Type Dual Power
Gearbox Type 16F/4R, 2-Speed powershift
Number of Forward Gears 16
Number of Reverse Gears 4
Clutch Type Dry disc
Oil Capacity, qts (L) 69.6 (65.9)
Maximum Forward Speed, mph (kph) 18.8 (30.3)
Maximum Reverse Speed, mph (kph) 9.1 (14.6)

Optional Transmission
Transmission Type Synchro Shift
Gearbox Type 12F/12R, Synchronized
Number of Forward Gears 12
Number of Reverse Gears 12
Clutch Type Dry disc
Maximum Forward Speed, mph (kph) 19.2 (30.9)
Maximum Reverse Speed, mph (kph) 19.2 (30.9)


Optional Transmission
Transmission Type Electro Shift / Pulse Command
Gearbox Type 16F/16R, 4-Speed powershift
Number of Forward Gears 16
Number of Reverse Gears 16
Clutch Type Wet disc
Oil Capacity, qts (L) 64.0 (60.6)
Maximum Forward Speed, mph (kph) 19.1 (30.7)
Maximum Reverse Speed, mph (kph) 19.1 (30.7)

Wheels and Tires
Drive Wheels 2WD/4WD
Steering Configuration Front Steer
Steering System Hydrostatic power
Brakes Type Wet disc, hydraulically actuated
Brake Disc Diameter (overall), in (mm) 8.8 (224)
Parking Brake Operates on footbrake mechanism
Front Tire Size 7.50-16
Rear Tire Size 16.9-30

Hydraulic System
Hydraulic System Type (S/SL) Open center
Implement Pump Type Gear
Implement Pump Flow, gpm (Lpm) 9.6 (36.8)
Hydraulic Pressure, Bar (psi) 176 (2550)
Hydraulic System Type (SLE) Closed centre load sensing
Implement Pump Type Variable displacement piston pump
Implement Pump Flow, gpm (Lpm) 20.8 (79.3)
Hydraulic Pressure, Bar (psi) 186 (2700)
Steering Pump Type Fixed displacement gear pump
Steering Pump Flow, gpm (Lpm) 9.6 (36.5)
Steering Pressure, Bar (psi) 145 (2100)
Number of Standard Remote Valves Up to 4 optional
3-Point Hitch Category 2
Draft Sensing or Lift Control (S/SL) Position control and top-link draft sensing
Draft Sensing or Lift Control (SLE) Electronic Draft Control
Standard Lift Capacity 24 (600mm) behind pin (S/SL), lb (kg) 4910 (2227)
Standard Lift Capacity at lift pin (S/SL), lb (kg) 6350 (2880)
Standard Lift Capacity 24 (600mm) behind pin (SLE), lb (kg) 5190 (2350)
Standard Lift Capacity at lift pin (SLE), lb (kg) 6713 (3045)

Dimensions and Weight
Wheel Base (2WD), in (mm) 92.1 (2340)
Wheel Base (4WD), in (mm) 93 (2360)
Overall Length (2WD), in (mm) 158.3 (4020)
Overall Length (4WD), in (mm) 158.7 (4030)
Height (Hood), in (mm) 67.3 (1710)
Height (Cab), in (mm) 107.1 (2725)
Width (2WD), in (mm) 77.7 (1975)
Width (4WD), in (mm) 80 (2030)
Ground Clearance (2WD), in (mm) 21.5 (546)
Ground Clearance (4WD), in (mm) 20.2 (512)
Turning Radius Without Brakes (2WD), in (mm) 144 (3658)
Turning Radius Without Brakes (4WD), in (mm) 159 (4040)
Weight (2WD, Cab), lb (kg) 8130 (3685)
Weight (4WD, Cab), lb (kg) 9120 (4135)
Weight (2WD, ROPS), lb (kg) 7100 (3220)
Weight (4WD, ROPS), lb (kg) 8090 (3668)

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