| Manufacturer |
International Harvester |
| Price |
- |
| Model |
500 |
| Equipment Type |
Agricultural Crawler Tractors |
| Factory |
Hamilton, Ontario, Canada |
NEBRASKA TRACTOR TEST 950 2
| Description |
Gasoline Torque Amplifier crawler October 24 - November 2, 1966 Link: Nebraska Tractor Test 950 file PTO performance Drawbar performance Gear 2-Direct used for power test. Gear 2-TA used for pull test |
| Power at rated engine speed |
37.22hp / 27.8kW |
| Fuel use |
3.2gal/hour / 12.1l/hour |
| Max power |
31.24hp / 23.3kW |
| Max pull |
7,988lbs / 3623kg |
NEBRASKA TRACTOR TEST 951 2
| Description |
Diesel Torque Amplifier crawler October 24 - November 2, 1966 Link: Nebraska Tractor Test 951 file PTO performance Drawbar performance Gear 2-Direct used for power test Gear 2-TA used for pull test |
| Power at rated engine speed |
36.65hp / 27.3kW |
| Fuel use |
2.7gal/hour / 10.2l/hour |
| Max power |
30.55hp / 22.8kW |
| Max pull |
7,957lbs / 3609kg |
INTERNATIONAL HARVESTER 500 POWER
| Engine (gross) |
47hp / 35.0kW |
| Engine (net) |
38hp / 28.3kW |
| PTO (claimed) |
36hp / 26.8kW |
| Drawbar (tested) |
31.24hp / 23.3kW |
| PTO (tested) |
37.22hp / 27.8kW |
ENGINES OVERVIEW
The International Harvester 500 tractor features a choice between a 2.5L 4-cylinder diesel engine and a 2.4L 4-cylinder gasoline engine, offering versatility in fuel type. The diesel variant excels in torque and fuel efficiency, making it ideal for heavy-duty applications, while the gasoline engine may provide easier starting and lower initial costs. However, the lower torque output of the gasoline engine can be a disadvantage for demanding tasks, making the diesel option more suitable for rigorous farming operations.
| Description |
International Harvester 2.5L 4-cyl diesel International Harvester 2.4L 4-cyl gasoline |
ENGINE DETAIL 1
The International Harvester 500 tractor is powered by a BD-154 diesel engine, offering 43.5 hp at a rated RPM of 2000, which provides sufficient torque for medium-duty applications. Its high compression ratio of 23:1 enhances fuel efficiency and cold-start capability through glow plugs, although it may require higher-quality diesel fuel. With a compact displacement of 2.5L, it strikes a balance between power and manageable oil and coolant capacities, making it suitable for general farming tasks while keeping maintenance straightforward.
| Description |
International Harvester BD-154 diesel 4-cylinder liquid-cooled inline |
| Displacement |
154ci / 2.5L |
| Bore/Stroke |
3.50x4.00inches / 89x 102 mm |
| Power (gross) |
43.5hp / 32.4kW |
| Air cleaner |
dry element |
| Pre-heating |
glow plugs |
| Compression |
23:1 |
| Rated RPM |
2000 |
| Starter |
electric |
| Starter volts |
12 |
| Oil capacity |
6.25qts / 5.9L |
| Coolant capacity |
12qts / 11.4L |
ENGINE DETAIL 2
The International Harvester 500 tractor features a 4-cylinder C-146 gasoline engine with a displacement of 2.4L, delivering a gross output of 47hp at 2000 RPM, making it suitable for light to moderate agricultural tasks. With a compression ratio of 7.6:1 and a dry element air cleaner, it promotes fuel efficiency and reliability, though the lower power output may limit its use in heavy-duty operations. The electric starter and manageable oil and coolant capacities (5 qts and 12 qts, respectively) enhance user convenience, but proper maintenance is essential to ensure optimal performance over time.
| Description |
International Harvester C-146 gasoline 4-cylinder liquid-cooled |
| Displacement |
145.3ci / 2.4L |
| Bore/Stroke |
3.375x4.06inches / 86x 103 mm |
| Power (gross) |
47hp / 35.0kW |
| Fuel system |
1-inch carburetor |
| Air cleaner |
dry element |
| Compression |
7.6:1 |
| Rated RPM |
2000 |
| Starter |
electric |
| Starter volts |
12 |
| Oil capacity |
5 qts /4.7 L |
| Coolant capacity |
12qts / 11.4L |
INTERNATIONAL HARVESTER 500 ENGINES
The International Harvester 500 tractor is equipped with either a 2.5L 4-cylinder diesel engine or a 2.4L 4-cylinder gasoline engine, providing versatility in fuel options but with weight and efficiency trade-offs. The 15.9-gallon (60.2L) fuel tank allows for extended operation periods, ideal for tasks requiring prolonged use, though fuel consumption rates will vary between the diesel and gasoline variants. Potential challenges include finding compatible fuel supplies and maintenance considerations for each engine type due to their distinct operational characteristics.
| Description |
International Harvester 2.5L 4-cyl diesel International Harvester 2.4L 4-cyl gasoline |
| Fuel tank |
15.9gal / 60.2L |
TRANSMISSIONS OVERVIEW
The International Harvester 500 tractor features an 8-speed partial power shift and a 5-speed unsynchronized gear system, allowing for versatile speed and torque management. The partial power shift enhances operator efficiency by enabling smoother transitions between gears, ideal for varied agricultural tasks. However, the unsynchronized gear may present challenges in gear engagement, particularly for less experienced operators in demanding situations.
| Description |
8-speed partial power shift 5-speed unsynchronized gear |
TRANSMISSION 1
The International Harvester 500 tractor's Torque Amplifier allows for smooth gear transitions with its partial power shift system, enhancing operational efficiency by enabling shift-on-the-move capabilities. The 8 forward and 2 reverse gears provide versatility in various terrains, while the 10-inch dry disc clutch ensures reliable engagement. However, the relatively low oil capacity of 13.2 quarts may require more frequent maintenance checks, especially under heavy use scenarios.
| Transmission |
International Harvester Torque Amplifier |
| Type |
partial power shift |
| Gears |
8 forward and 2 reverse |
| Clutch |
10-inch dry disc |
| Oil capacity |
13.2qts / 12.5L |
| Description |
The IH Torque Amplifier adds a shift-on-the-move underdrive to the basic gear transmission. |
TRANSMISSION 2
The International Harvester 500 features an unsynchronized gear transmission with 5 forward and 1 reverse gear, which may challenge smooth shifting, especially under load. Its 10-inch dry disc clutch provides robust engagement but requires precise operation to prevent slippage. With an oil capacity of 13.2 quarts (12.5L), maintaining proper lubrication is essential for optimal performance and longevity.
| Transmission |
International Harvester |
| Type |
unsynchronized gear |
| Gears |
5 forward and 1 reverse |
| Clutch |
10-inch dry disc |
| Oil capacity |
13.2qts / 12.5L |
MECHANICAL
The International Harvester 500 features a crawler chassis, providing enhanced traction and stability on uneven terrain, making it suitable for heavy-duty applications. Its mechanical clutches during steering may require more physical effort but enable precise maneuverability, while the open operator station can pose ergonomic challenges in adverse weather conditions. The 8-speed partial power shift transmission allows for versatile speed control, although the unsynchronized 5-speed gear may necessitate additional skill for smooth gear transitions.
| Chassis |
crawler |
| Steering |
mechanical clutches |
| Brakes |
mechanical contracting band |
| Cab |
Open operator station. |
| Transmissions |
8-speed partial power shift/5-speed unsynchronized gear |
HYDRAULICS
| Valves |
1 to 3 |
| Pump flow |
7 gpm /26.5 lpm/8 gpm /30.3 lpm (optional)/9 gpm /34.1 lpm (optional)/12gpm / 45.4lpm (front optional)/17gpm / 64.3lpm (front optional) |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
| Rear PTO |
transmission |
| Rear RPM |
1000/540 |
| Engine RPM |
980@2000 |
INTERNATIONAL HARVESTER 500 TRACKS
| Size |
12-inch shoes |
| Option |
10-inch/14-inch |
DIMENSIONS
| Wheelbase |
67inches / 170cm |
| Length |
106.5inches / 270cm |
| Width |
60inches / 152cm |
| Height (hood) |
48.8inches / 123cm |
| Weight |
7,050lbs / 3197kg (gas)/7,260lbs / 3293kg (diesel) |
| Ground clearance |
13.5inches / 34cm |
DIMENSIONS & TRACKS
| Wheelbase |
67inches / 170cm |
| Weight |
7050 to 7260 pounds |
| Description |
12-inch shoes |
500 SERIAL NUMBERS
| 1965 |
501 |
| 1966 |
891 |
| 1967 |
2501 |
| 1968 |
3544 |
| 1969 |
4065 |
| Final |
4584 |
ELECTRICAL
| Charging system |
generator |
| Battery volts |
12 |
| Battery AH |
40 (gas)/96 (diesel) |
