Ford
Ford 641
The Ford 641 is a utility tractor produced from 1957 to 1962 as part of the 601 Workmaster Series. It was built in Highland Park, Michigan, USA. The tractor features a 48.4 hp engine and was available with gasoline, diesel, or LP gas engines. It has a 4-speed or optional 12-speed unsynchronized transmission, two-wheel drive, and an open operator station. The 641 was offered with various transmission and PTO options and had an orchard variant model 641-21. It was originally priced at $3,096 in 1961. The tractor supports a variety of attachments including a front-end loader with a 1000 lbs lift capacity.
Power48 hp
Founded1957 - 1962
Model641
Technical Specifications
Detailed specifications and technical data for Ford 641
Power
| Plows | 2 (14-inch) |
|---|---|
| PTO (tested) | 31.78 hp (23.7 kW) |
| Belt (tested) | 33.65 hp (25.1 kW) |
| Belt (claimed) | 32 hp (23.9 kW) |
| Engine (gross) | 48.4 hp (36.1 kW) |
| Drawbar (tested) | 29.82 hp (22.2 kW) |
Engine
| Torque | 126.8 lb-ft (171.9 Nm) |
|---|---|
| Options | Ford 2.2L 4-cyl gasoline, Ford 2.4L 4-cyl diesel, Ford 2.2L 4-cyl LP gas |
| Emissions | Tier 0 |
| Rated RPM | 2200 |
| Sparkplug | 14MM |
| Torque RPM | 1600 |
| Air cleaner | oil bath |
| Bore/Stroke | 3.4375x3.60 inches (87 x 91 mm) |
| Compression | 7.5:1 |
| Displacement | 134 ci (2.2 L) |
| Firing order | 1-2-4-3 |
| Power (gross) | 48.4 hp (36.1 kW) |
| Sparkplug gap | 0.025 inches (min) (0.635 mm), 0.028 inches (max) (0.711 mm) |
| Starter volts | 6 |
| Coolant capacity | 15 qts (14.2 L) |
| Rated RPM LP gas | 2200 |
| Rated RPM diesel | 2200 |
| Air cleaner diesel | oil bath |
| Bore/Stroke LP gas | 3.4375x3.60 inches (87 x 91 mm) |
| Bore/Stroke diesel | 3.562x3.60 inches (90 x 91 mm) |
| Compression LP gas | 7.5:1 |
| Compression diesel | 16.8:1 |
| Ford diesel engine | 4-cylinder 8-valve, liquid-cooled vertical inline |
| Displacement LP gas | 134 ci (2.2 L) |
| Displacement diesel | 144 ci (2.4 L) |
| Firing order LP gas | 1-2-4-3 |
| Firing order diesel | 1-2-4-3 |
| Power (gross) diesel | 42.7 hp (31.8 kW) |
| Starter volts LP gas | 6 |
| Starter volts diesel | 12 |
| Ford EAE Red Tiger LP gas | 4-cylinder 8-valve, liquid-cooled vertical inline |
| Ford EAE Red Tiger gasoline | 4-cylinder 8-valve, liquid-cooled vertical inline |
Capacity
| Fuel | 13 gal (49.2 L) |
|---|---|
| Rear axle | 8 qts (7.6 L) |
| Hydraulic system | 2 gal (7.6 L) |
Variants
| 611 | Select-O-Speed, no PTO |
|---|---|
| 621 | Four-speed, no PTO or 3-point |
| 631 | Four-speed, no PTO |
| 641 | Four-speed |
| 651 | Five-speed |
| 661 | Five-speed, live PTO |
| 671 | Select-O-Speed |
| 681 | Select-O-Speed, dual-speed PTO |
Electrical
| Ground | positive (6V), negative (12V) |
|---|---|
| Battery AH | 80 (6V), 135 (12V) |
| Battery volts | 6 (gas/lp), 12 (diesel) |
| Charging amps | 20 |
| Charging system | generator |
Engine Oil
| Oil capacity | 5 qts (4.7 L) |
|---|---|
| Oil change interval | 100 h |
Hydraulics
| Type | open center |
|---|---|
| Capacity | 2 gal (7.6 L) |
| Total flow | 4 gpm (15.1 lpm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Differential mechanical expanding shoe brakes |
| Steering | manual, power assist optional |
| Operator station | Open operator station |
Production
| Type | Utility tractor |
|---|---|
| Series | 601 Workmaster Series |
| Built in | Highland Park, Michigan, USA |
| Original price | $3,096 in 1961 |
| Years produced | 1957 - 1962 |
| Orchard variant | 641-21 |
Attachments
| Weight | 593 lbs (268 kg) |
|---|---|
| Boom rod | 2.5 inches (6 cm) |
| Reach dumped | 36.1 inches (91 cm) |
| Height at pin | 126 inches (320 cm) |
| Lift capacity | 1000 lbs lift (full at pin) (453 kg) |
| Breakout force | 2500 lbs breakout (at pin) (1134 kg) |
| Clearance level | 96 inches (243 cm) |
| Clearance dumped | 80 inches (203 cm) |
| front-end loader | 711 Loader |
Transmission
| Type | unsynchronized gear |
|---|---|
| Oil type | SAE 80 Mild EP |
| Manufacturer | Ford |
| Gears 4-speed | 4 forward and 1 reverse |
| Clutch 4-speed | 254mm dry disc |
| Gears 12-speed | 12 forward and 3 reverse |
| Notes 12-speed | The 12-speed adds a mechanical over/under to the basic four-speed transmission. |
| Clutch 12-speed | dry disc |
| Oil capacity 4-speed | 6 qts (5.7 L) |
| Transmission options | 4-speed unsynchronized gear, 12-speed unsynchronized gear |
Tractor hitch
| Control | position and draft control |
|---|---|
| Rear Type | I |
| Rear lift | 1250 lbs (567 kg) |
Serial Numbers
| 1957 | 1001 |
|---|---|
| 1958 | 11977 |
| 1959 | 58312 |
| 1960 | 105943 |
| 1961 | 131427 |
| 1962 | 155531 |
Dimensions & Tires
| Weight | 3291 lbs (1492 kg) |
|---|---|
| Rear tire | 11-28 |
| Front tire | 5.50-16 |
| Rear tread | 52 to 76 inches (132 to 193 cm) |
| Front tread | 52 to 80 inches (132 to 203 cm) |
| Ballasted weight | 5523 lbs (2505 kg) |
| Operating weight | 3291 lbs (1492 kg) |
Power Take-off (PTO)
| Rear PTO | transmission |
|---|---|
| Rear PTO Type | 540 (1.375) |