| Manufacturer |
Farmall |
| Price |
6,100(USD) |
| Model |
706 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Rock Island, Illinois, USA |
ENGINES OVERVIEW
The Farmall 706 tractor offers a range of engine options, including 4.6L and 5.1L 6-cylinder diesels, alongside 4.3L and 4.8L 6-cylinder gasoline engines, giving versatility for different fuel preferences and operational needs. The diesel variants typically provide better torque and fuel efficiency, benefiting heavy-duty applications, while gasoline engines offer easier starting in cold conditions. However, challenges may arise in maintenance and parts availability, especially for older models, which could affect operational downtime on the farm.
| Description |
International Harvester 4.6L 6-cyl diesel International Harvester 5.1L 6-cyl diesel International Harvester 4.3L 6-cyl gasoline Interntional Harvester 4.8L 6-cyl gasoline |
ENGINE DETAIL 1
The Farmall 706 is powered by the International Harvester D282 diesel engine, offering a robust output of 89 hp (66.4 kW) at a rated RPM of 2300, making it suitable for medium agricultural tasks. The 282ci displacement coupled with a dual-stage dry air cleaner ensures efficient combustion and lower emissions, which can be advantageous for extended field work. However, maintenance aspects like valve clearance adjustments (0.027 inches for both intake and exhaust) must be monitored regularly to maintain engine performance and longevity.
| Description |
International Harvester D282 diesel 6-cylinder liquid-cooled The 282 was the original diesel available for the 706 It was later replaced by the German-built 310 diesel |
| Displacemen |
282ci / 4.6L |
| Bore/Strok |
3.6875x4.3906inches / 94x 112mm |
| Power (gross |
89hp / 66.4kW |
| Air cleane |
dual stage dry |
| Rated RP |
2300 |
| Idle RP |
900-2300 |
| Firing orde |
1-5-3-6-2-4 |
| Starter volt |
12 |
| Coolant capacit |
21.5qts / 20.3L |
| Intake valve clearanc |
0.027inches*Hot / 0.686mm |
| Exhaust valve clearanc |
0.027inches*Hot / 0.686mm |
ENGINE OIL 1
The Farmall 706 tractor has an oil capacity of 9 quarts (8.5 liters), which allows for adequate lubrication of the engine components, supporting optimal performance. However, maintenance frequency should be adhered to, as low oil levels can lead to increased wear and potential engine failure. It’s essential to monitor oil levels particularly during heavy usage scenarios or extended operation periods to ensure operational efficiency and longevity.
ENGINE DETAIL 2
The Farmall 706 features the International Harvester D310 diesel engine, offering a displacement of 310 cubic inches (5.1L) and a bore/stroke ratio of 3.875x4.375 inches, indicating a robust torque output suitable for various agricultural tasks. One advantage is its dual-stage dry air cleaner, which enhances engine longevity and performance by improving air intake efficiency. Operating at a rated RPM of 2300 makes it ideal for high-torque applications; however, it may exhibit stress at sustained maximum load scenarios, necessitating careful load management to avoid engine strain.
| Description |
International Harvester D310 diesel 6-cylinder liquid-cooled The 310 replaced the 282 diesel in November 1966, serial number 37237 |
| Displacemen |
310ci / 5.1L |
| Bore/Strok |
3.875x4.375inches / 98x 111mm |
| Air cleane |
dual stage dry |
| Rated RP |
2300 |
| Starter volt |
12 |
ENGINE DETAIL 3
The Farmall 706 features a robust International Harvester C263 gasoline engine with a displacement of 263ci, producing 89hp at a rated RPM of 2300, making it suitable for various agricultural tasks. The dual-stage dry air cleaner enhances engine performance by improving air intake quality, while the liquid-cooled system ensures optimal operating temperatures, crucial for longevity under heavy use. However, consider the engine's sensitivity to spark plug gap specifications between gasoline and LP gas which necessitates careful maintenance to prevent performance discrepancies.
| Description |
International Harvester C263 gasoline 6-cylinder liquid-cooled The 263 was also available as an LP gas engine |
| Displacemen |
263ci / 4.3L |
| Bore/Strok |
3.5625x4.3906inches / 90x 112mm |
| Power (gross |
89hp / 66.4kW |
| Air cleane |
dual stage dry |
| Rated RP |
2300 |
| Idle RP |
900-2300 |
| Starter volt |
12 |
| Coolant capacit |
20.5qts (gas) / 19.4 L 21qts (LP gas) / 19.9L |
| Sparkplug ga |
0.023inches (gas) / 0.584mm 0.015inches (LP) / 0.381mm |
| Point ga |
0.020inches / 0.508mm |
| Intake valve clearanc |
0.027inches (hot)/0.686mm |
| Exhaust valve clearanc |
0.027inches (hot)/0.686mm |
ENGINE OIL 2
The Farmall 706 tractor has an oil capacity of 9 quarts (8.5 liters), which ensures sufficient lubrication for optimal engine performance and longevity. Regularly checking and maintaining the oil level is crucial to prevent engine wear and overheating. The relatively moderate capacity allows for ease of oil changes, though operators should be mindful of oil quality to maximize engine efficiency.
ENGINE DETAIL 4
The Farmall 706 features the International Harvester C291 gasoline engine, providing robust performance with its 291ci displacement and 6-cylinder configuration, ideal for farming applications requiring reliability. With a compression ratio of 7.5:1 and rated at 2300 RPM, the engine offers good torque characteristics, making it suitable for heavy-duty tasks while also presenting flexibility with an available LP gas variant. However, the relatively low compression ratio may limit power output compared to modern high-compression engines, potentially affecting fuel efficiency and overall performance in demanding scenarios.
| Description |
Interntional Harvester C291 gasoline 6-cylinder liquid-cooled The 291 was also available as an LP gas engine |
| Displacemen |
291ci / 4.8L |
| Bore/Strok |
3.75x4.39inches / 95x 112mm |
| Compressio |
7.5:1 |
| Rated RP |
2300 |
FARMALL 706 ENGINES
The Farmall 706 offers a range of engine options, including the 4.6L and 5.1L diesel variants, which provide excellent torque for heavy-duty applications, ideal for plowing and pulling. Its gasoline alternatives (4.3L and 4.8L) offer faster start times and lower initial costs but may lack the fuel efficiency and power of the diesel options. When considering use scenarios, the diesel engines are best suited for extensive fieldwork, while gasoline engines may be more appropriate for lighter, short-duration tasks.
| Description |
International Harvester 4.6L 6-cyl diesel International Harvester 5.1L 6-cyl diesel International Harvester 4.3L 6-cyl gasoline Interntional Harvester 4.8L 6-cyl gasoline |
TRANSMISSIONS OVERVIEW
The Farmall 706 tractor features an 8-speed or optional 16-speed transmission, allowing for better torque management and increased operational flexibility under varying load conditions. The 16-speed option provides finer gear selection, enhancing fuel efficiency and performance during tasks such as plowing or heavy tillage. However, the complexity of the 16-speed transmission may increase maintenance requirements compared to the simpler 8-speed system.
| Description |
8-speed 16-speed |
TRANSMISSION 1
The Farmall 706 tractor features a sliding gear transmission with 8 forward and 4 reverse speeds, allowing for versatile maneuverability in diverse farming scenarios. Its 12-inch dry disc clutch requires the operator to stop the tractor for gear selection, which can be inconvenient in time-sensitive situations. Utilizing 68 quarts of IH Hy-Tran oil offers optimal hydraulic performance, but regular maintenance is essential to prevent potential transmission issues.
| Transmissio |
sliding gear |
| Gear |
8 forward and 4 reverse |
| Clutc |
12-inch dry disc |
| Oil capacit |
68qts / 64.4L / IH Hy-Tran |
| Description |
The 706 transmission is controlled by means of two levers A range lever selects high, low, reverse range, or neutral A separate speed lever selects one of four speeds The tractor must be stopped, and the clutch used, to change range or speed gears |
SPEEDS 1
| Description |
With 15.5-38 rear tires |
TRANSMISSION 2
The Farmall 706 features a Torque Amplifier (TA) that allows for on-the-go shifting between direct drive and under-drive, enhancing operational flexibility without the need to use the clutch or stop the tractor. This system provides 16 forward and 8 reverse gears, optimizing performance for various field conditions; however, transitioning between drive modes requires careful handling of the TA lever to prevent abrupt changes. Key considerations include the tractor's 68-quart oil capacity, ensuring proper lubrication and efficient hydraulic performance, critical for maintaining TA functionality during extended use.
| Transmissio |
Torque Amplifier |
| Gear |
16 forward and 8 reverse |
| Clutc |
12-inch dry disc |
| Oil capacit |
68qts / 64.4L / IH Hy-Tran |
| Description |
The Torque Amplifier (TA) provides a hydraulically-actuted under-drive that may be shifted, on the move, with any range and speed selection in the main transmission Using the TA does not require the clutch or stopping the tractor With the lever in the forward position, the TA is disengaged and the transmission is in direct drive To slow the tractor (increasing pulling power) the TA lever should be pulled smoothly and quickly to the rear, engaging the TA To disengage the TA and return to direct-drive, the TA should be moved forward, with a slight pause at the center position of the lever |
SPEEDS 2
| Description |
With 15.5-38 rear tires |
FARMALL 706 TRANSMISSIONS
The Farmall 706 tractor features an 8-speed transmission that can be upgraded to a 16-speed variant, enhancing versatility for various agricultural tasks. The 16-speed option provides improved efficiency in matching engine RPM to field speeds, allowing for finer control in both tillage and transport applications. However, the complexity of the additional gears may increase maintenance needs and operator training requirements, potentially offsetting some of the efficiency gains.
| Description |
8-speed/16-speed |
MECHANICAL
The Farmall 706 tractor offers versatility with both two- and four-wheel drive options, enhancing traction and performance across varied terrains. Its power steering contributes to ease of maneuverability, while the hydraulic dry double disc brakes provide reliable stopping power under load. Keep in mind, the optional cab with A/C is particularly beneficial for operators working in hot climates, improving comfort during extended use.
| Description |
Two- or four-wheel drive Power steering Hydraulic dry double disc brakes Cab optional, A/C available starting in 1966 |
CAPACITY
| Fue |
33gal (gas/diesel) / 124.9L 39gal (LP gas) / 147.6L |
| Hydraulic syste |
17gal / 64.3L |
HYDRAULICS
| Typ |
open center |
| Capacit |
17gal / 64.3L |
| Valve |
1 or 2 |
| Pump flo |
12gpm / 45.4lpm 17gpm (optional) / 64.3lpm 3gpm (PTO pump) / 11.4lpm |
| Steering flo |
9gpm / 34.1lpm |
TRACTOR HITCH
| Rear Typ |
2 |
| Typ |
IH Fast Hitch |
POWER TAKE-OFF (PTO)
| Rear PT |
independent |
| Rear RP |
540/1000/1000 |
| Engine RP |
540@2100 / 1000@2100 |
FARMALL 706 TIRES
The Farmall 706 features a versatile tire configuration, with 2WD front tires sized at 6.50-16 and 4WD front tires at 11.2-24, enhancing stability and traction across varying terrains. The rear tire dimension of 15.5-38 provides substantial flotation and grip, making it suitable for heavy-field operations while mitigating soil compaction. However, the 2WD may present challenges in slippery conditions, whereas the 4WD option offers improved handling but at the cost of increased wear on drivetrain components.
| 2WD Ag fron |
6.50-16 |
| 4WD Ag fron |
11.2-24 |
| Ag rea |
15.5-38 |
DIMENSIONS & TIRES
The Farmall 706, available in both 2WD and 4WD configurations, offers a wheelbase of 97.5 inches (2WD) and 94.75 inches (4WD), providing stability and maneuverability suited for diverse farming tasks. With a weight range of 7,530 to 9,160 pounds, it ensures effective traction and ground contact, crucial for pulling heavy implements. However, the 2WD version may present challenges in wet or uneven terrain compared to the 4WD, which enhances all-terrain capability and reduces soil compaction risks.
| 2WD Wheelbas |
97.5inches / 247cm |
| 4WD Wheelbas |
94.75inches / 240cm |
| Weigh |
7530 to 9160 pounds |
| Front tir |
6.50-16 |
| Rear tir |
15.5-38 |
706 SERIAL NUMBERS
BELT PULLEY
| Diamete |
11inches / 27cm |
| Widt |
7.5inches / 19cm |
| RP |
1055 |
| Spee |
3,038ft/min / 925.98meters/min |
ELECTRICAL
| Groun |
negative |
| Charging amp |
25 (generator) / 32 (alternator) |
| Batterie |
1 (gas) / 2 (diesel) |
| Battery volt |
12 (gas) / 6 (diesel) |
| Battery A |
60 (gas/LP) / 130 (diesel) |
