Ford
Ford 840
The Ford 840 is a utility tractor introduced in 1957 as part of the 800 Series. It was built in Highland Park, Michigan, USA. The tractor features a Ford 2.8L 4-cylinder gasoline or LP gas engine, with estimated engine power around 33.3 to 44.4 hp. It has a two-wheel drive with manual steering and optional power assist. The 840 offers a 4-speed unsynchronized gear transmission with an optional 12-speed Sherman auxiliary transmission. It includes an open operator station, mechanical expanding shoe brakes, and a rear PTO with 540 rpm. The tractor has a wheelbase of 75.18 inches and weighs between 2850 to 3400 pounds operating weight. Hydraulics are open center type with 2000 psi pressure and 4.8 gpm pump flow. Fuel capacity is 14 gallons. The 840 was available in variants including the 820, 850, and 860 models.
Power44 hp[B]
Founded1957
Model840
Technical Specifications
Detailed specifications and technical data for Ford 840
Power
| Plows | 3 14-inch |
|---|---|
| Belt (claimed) | 40 hp (29.8 kW) |
Engine
| Type | gasoline, 4-cylinder 8-valve, liquid-cooled inline |
|---|---|
| Model | Ford EAF |
| Options | Ford 2.8L 4-cyl gasoline, Ford 2.8L 4-cyl LP gas |
| Rated RPM | 2200 |
| Air cleaner | oil bath |
| Bore/Stroke | 3.90x3.60 inches (99 x 91 mm) |
| Compression | 6.75:1 (gasoline), 8.0:1 (LP gas) |
| Displacement | 172 ci (2.8 L) |
| Firing order | 1-2-4-3 |
| Oil capacity | 5 qts (4.7 L) |
| Starter volts | 6 |
| Coolant capacity | 15 qts (14.2 L) |
Weight
| Shipping | 2850 lbs (1292 kg) |
|---|---|
| Ballasted | 6700 lbs (3039 kg) |
| Operating | 3400 lbs (1542 kg) |
Capacity
| Fuel | 14 gal (53.0 L) |
|---|---|
| Rear axle | 11 qts (10.4 L) |
| Hydraulic system | 2 gal (7.6 L) |
Variants
| 820 | no 3-point or hydraulics |
|---|---|
| 840 | four-speed |
| 850 | transmission PTO |
| 860 | live PTO |
Electrical
| Ground | positive |
|---|---|
| Battery volts | 6 |
| Charging amps | 20 |
| Charging system | generator |
Hydraulics
| Type | open center |
|---|---|
| Capacity | 2 gal (7.6 L) |
| Pressure | 2000 psi (137.9 bar) |
| Pump flow | 4.8 gpm (18.2 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 | 800 Series |
| Built in | Highland Park, Michigan, USA |
| Year introduced | 1957 |
Transmission
| Type | unsynchronized gear |
|---|---|
| Gears | 4 forward and 1 reverse (standard), 12 forward and 3 reverse (Sherman auxiliary) |
| Model | Sherman |
| Notes | The Sherman under-over auxiliary transmission was available as a factory option on the 840. Tractors equipped with the transmission were marked 840S. |
| Clutch | dry disc |
| Options | 4-speed unsynchronized gear, 12-speed unsynchronized gear |
| Oil type | SAE 80 Mild EP |
| Oil capacity | 8 qts (7.6 L) |
Tractor hitch
| Control | position and draft control |
|---|---|
| Rear Type | I |
| Rear lift | 1250 lbs (567 kg) |
Serial Numbers
| 1954 | 1 |
|---|---|
| 1955 | 10615 |
| 1956 | 77271 |
| 1957 | 116368 |
| Serial number location | On the left-hand side of the transmission housing behind the starter. |
Dimensions & Tires
| Width | 64.75 inches (164 cm) |
|---|---|
| Height | 59.3 inches (150 cm) |
| Length | 121.8 inches (309 cm) |
| Rear tire | 12-28 |
| Wheelbase | 75.18 inches (190 cm) |
| Front tire | 6.00-16 |
| Rear tread | 52 to 76 inches (132 to 193 cm) |
| Front tread | 52 to 76 inches (132 to 193 cm) |
| Ground clearance | 21 inches (53 cm) |
Power Take-off (PTO)
| Rear PTO | transmission |
|---|---|
| Rear PTO Type | 540 (1.125) |
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