| Manufacturer |
Farmall |
| Price |
- |
| Model |
AM-7 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Geelong, Australia |
FARMALL AM-7 POWER
| Kerosene Drawbar (claimed) |
36.7hp / 27.4kW |
| Diesel Drawbar (claimed) |
44.6hp / 33.3kW |
| Kerosene Belt (claimed) |
41hp / 30.6kW |
| Diesel Belt (claimed) |
48.8hp / 36.4kW |
ENGINES OVERVIEW
The Farmall AM-7 tractor is equipped with a robust International Harvester 4.3L 4-cylinder engine available in both kerosene and diesel variants, offering versatility in fuel choice. Advantages of the kerosene option include lower fuel costs and better cold weather performance, while the diesel variant provides higher torque and fuel efficiency under heavy loads. However, challenges may arise with the availability and compatibility of kerosene in certain regions, potentially limiting operational flexibility.
| Description |
International Harvester 4.3L 4-cyl kerosene International Harvester 4.3L 4-cyl diesel |
ENGINE DETAIL 1
The Farmall AM-7 tractor features a kerosene 4-cylinder engine with a relatively low compression ratio of 5.07:1, ideal for efficient operation at low RPMs (1450), which can enhance durability but may limit power at higher speeds. Its 264ci (4.3L) displacement delivers sufficient torque for agricultural tasks, although the need for a 6-volt starter implies less modern electrical efficiency. Optimal for light to moderate farming applications, its design may present challenges in terms of fuel availability and cold-start performance compared to gasoline engines.
| Description |
International Harvester kerosene 4-cylinder liquid-cooled |
| Displacement |
264ci / 4.3L |
| Bore/Stroke |
4.00x5.25inches / 102x 133 mm |
| Compression |
5.07:1 |
| Rated RPM |
1450 |
| Starter volts |
6 |
ENGINE DETAIL 2
The Farmall AM-7 tractor features a robust 4-cylinder diesel engine with a significant displacement of 4.3 liters, ensuring strong torque output suitable for heavy field work. Its 16.5:1 compression ratio and a rated RPM of 1450 suggest efficient fuel combustion, enhancing power while maintaining operational stability. However, the relatively low RPM may limit high-speed tasks, making it more suited for pulling and heavy-duty applications in agriculture.
| Description |
International Harvester diesel 4-cylinder liquid-cooled |
| Displacement |
264ci / 4.3L |
| Bore/Stroke |
4.00x5.25inches / 102x 133 mm |
| Compression |
16.5:1 |
| Rated RPM |
1450 |
| Starter volts |
12 |
FARMALL AM-7 ENGINES
The Farmall AM-7 features a robust International Harvester 4.3L 4-cylinder engine, available in both kerosene and diesel variants, providing flexibility in fuel choice based on regional availability and cost. The engine's moderate horsepower is advantageous for small to medium farming operations, offering decent torque for various implements. However, the kerosene variant may require more frequent fuel supply adjustments and specific maintenance compared to the diesel model, which generally has higher efficiency and longevity.
| Description |
International Harvester 4.3L 4-cyl kerosene/International Harvester 4.3L 4-cyl diesel |
TRANSMISSION
The Farmall AM-7 tractor features a 5-speed forward and 1-speed reverse gear system, providing versatile speed options for various farming tasks. The direct gear arrangement allows for efficient power transfer and a simplified operation, ideal for multiple applications such as plowing or hauling. However, the limited number of reverse gears may pose a challenge in tight maneuvering situations, necessitating careful planning during operation.
| Type |
gear |
| Gears |
5 forward and 1 reverse |
MECHANICAL
The Farmall AM-7 tractor features a 4x2 2WD chassis, providing minimal traction on uneven terrain, which may limit performance in wet or hilly conditions. The open operator station enhances visibility and operator comfort but exposes the operator to the elements. With a 5-speed gear transmission, the tractor allows for versatility in speed management, ideal for various farming tasks, yet may lack the ease of advanced shifting systems found in modern tractors.
| Chassis |
4x2 2WD |
| Cab |
Open operator station |
| Transmission |
5-speed gear |
HYDRAULICS
| Pressure |
800psi / 55.2bar |
| Pump flow |
7 gpm /26.5 lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
FARMALL AM-7 TIRES
The Farmall AM-7 features 6.00x16 Ag front tires and 12x38 Ag rear tires, providing a balance between maneuverability and traction on varied terrains. The larger rear tires enhance stability and load-carrying capacity, beneficial for plowing and heavy-duty applications. However, the smaller front tires may limit performance on extremely uneven ground, necessitating careful planning for diverse farming tasks.
| Ag front |
6.00x16 |
| Ag rear |
12x38 |
DIMENSIONS
| Wheelbase |
88.5inches / 224cm |
| Length |
133inches / 337cm |
| Width |
101inches / 256cm |
| Weight |
6801lbs / 3084kg |
| Ground clearance |
26.5inches / 67cm |
| Rear tread |
52 to 100inches / 132to 254 cm |
DIMENSIONS & TIRES
The Farmall AM-7 tractor features an 88.5-inch wheelbase, providing excellent stability during operation, especially on uneven terrain. Weighing 6,801 lbs, it offers substantial traction, ideal for tilling and heavy-duty fieldwork but may be challenging in softer soils due to potential sinking. The combination of 6.00x16 front and 12x38 rear tires supports versatile handling and traction, making it suitable for various agricultural tasks, though tire size may limit maneuverability in tight spaces.
| Wheelbase |
88.5inches / 224cm |
| Weight |
6801lbs / 3084kg |
| Front tire |
6.00x16 |
| Rear tire |
12x38 |
AM-7 SERIAL NUMBERS
| 1957 |
1067 (diesel) |
| 1958 |
1675 (diesel) |
| 1959 |
2901 (diesel) |
| Final |
4939 (diesel) |
BELT PULLEY
| Diameter |
11inches / 27cm |
| Width |
7.5inches / 19cm |
| RPM |
899 |
