| Manufacturer | International Harvester |
| Price | - |
| Model | 685 |
| Equipment Type | Utility Tractors |
| Factory | Doncaster, England |
INTERNATIONAL HARVESTER 685 POWER
| Engine (gross) | 71.8hp / 53.5kW |
| Engine (net) | 69hp / 51.5kW |
| PTO (claimed) | 63.3hp / 47.2kW |
ENGINE DETAIL
The International Harvester 685 is powered by a D239 diesel engine with a displacement of 3.9L, producing 71.8 hp at a rated RPM of 2300, making it suitable for medium-duty agricultural tasks. Its direct injection fuel system enhances combustion efficiency, while a peak torque of 180 lb-ft at 1600 RPM ensures strong pull, ideal for tillage and transport. However, the relatively high stroke-to-bore ratio may result in increased vibration, necessitating regular maintenance of engine mounts and components.
| Description | International Harvester D239 diesel 4-cylinder liquid-cooled |
| Displacement | 239ci / 3.9L |
| Bore/Stroke | 3.875x5.06inches / 98x 129 mm |
| Power (gross) | 71.8hp / 53.5kW |
| Fuel system | direct injection |
| Rated RPM | 2300 |
| Torque | 180 lb-ft /244.1 Nm |
| Torque RPM | 1600 |
| Starter volts | 12 |
INTERNATIONAL HARVESTER 685 ENGINE
The International Harvester 685 is powered by a robust 3.9L 4-cylinder diesel engine, which provides a good balance of power and fuel efficiency. With a substantial fuel tank capacity of 29.6 gallons (112.0 liters), this tractor is well-suited for extended work sessions in applications such as tillage or harvesting. However, potential challenges may arise from managing engine maintenance and the weight distribution due to its larger fuel capacity, which requires strategic planning for optimal performance in the field.
| Description | International Harvester 3.9L 4-cyl diesel |
| Fuel tank | 29.6gal / 112.0L |
TRANSMISSIONS OVERVIEW
The International Harvester 685 tractor features an 8-speed synchromesh transmission, enabling smooth gear shifts for efficient speed management in various field applications. The optional 16-speed two-speed power shift enhances productivity, offering flexibility in speed control during demanding tasks like plowing or transporting heavy loads. Consider potential challenges in maintenance complexity with the enhanced transmission options, which may require specialized knowledge for repairs.
| Description | 8-speed synchromesh 16-speed two-speed power shift |
TRANSMISSION 1
The International Harvester 685 features a synchromesh transmission with 8 forward gears and 4 reverse gears, enabling smooth shifting for various speed requirements during field operations. Its dual range (low/high) allows for optimal torque management in demanding conditions, making it suitable for both heavy-duty tasks and transport applications. However, potential challenges may arise in maintenance of the synchromesh system, requiring knowledgeable interventions to ensure longevity and performance efficiency.
| Type | synchromesh |
| Gears | 8 forward and 4 reverse |
| Description | Four gears (1-4) in two ranges (low/high) plus reverse range. |
TRANSMISSION 2
The International Harvester 685's two-speed power shift transmission with a torque amplifier enables smooth shifting and enhanced torque during load applications, making it suitable for heavy-duty tasks. With 16 forward and 8 reverse gears, it offers excellent versatility and control for various field operations, but the complexity of such a system may require additional maintenance. Users should consider operational scenarios where precise speed control is critical, such as tilling or plowing in variable terrain.
| Transmission | Torque Amplifier |
| Type | two-speed power shift |
| Gears | 16 forward and 8 reverse |
MECHANICAL
The International Harvester 685 tractor's chassis options of 2WD and 4WD enhance traction and maneuverability, particularly beneficial for diverse agricultural terrains; however, the 4WD configuration may increase operational costs. The standard rear differential lock improves traction in challenging conditions, while the hydraulic wet disc brakes provide reliable stopping power, crucial for safety in heavy-duty tasks. The transmission versatility with an 8-speed synchromesh or 16-speed two-speed power shift allows for efficient speed and torque management, making it suitable for varied farming scenarios from tillage to transport tasks.
| Chassis | 4x2 2WD/4x4 MFWD 4WD |
| Differential lock | rear standard |
| Steering | power |
| Brakes | hydraulic wet disc |
| Cab | Cab standard. Economy and Deluxe cabs available. |
| Transmissions | 8-speed synchromesh/16-speed two-speed power shift |
HYDRAULICS
| Pump flow | 12.4gpm / 46.9lpm |
TRACTOR HITCH
| Rear Type | II |
| Control | position and draft control |
| Rear lift | 4400lbs / 1995kg/5250lbs / 2381kg *With optional assistor ram |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | hydraulic wet disc |
| Rear RPM | 540/1000 |
INTERNATIONAL HARVESTER 685 TIRES
The International Harvester 685 features a robust tire configuration with 10.00-16 (2WD) or 12.4-24 (4WD) in the front and 16.9-34 in the rear, optimizing traction and stability for various agricultural tasks. The differential drive (2WD vs. 4WD) allows flexibility; 4WD enhances off-road grip and hillside stability, while 2WD offers improved fuel efficiency and lower initial cost. Consider terrain and load requirements when selecting specifications to maximize operational efficiency and minimize tire wear.
| Ag front | 10.00-16 (2WD)/12.4-24 (4WD) |
| Ag rear | 16.9-34 |
DIMENSIONS
| Wheelbase | 88.2inches / 224cm |
| Length | 147.6inches / 374cm |
| Height | 104inches / 264cm |
| 2WD Weight | 6703lbs / 3040kg |
| 4WD Weight | 7188lbs / 3260kg |
DIMENSIONS & TIRES
The International Harvester 685 tractor, with a wheelbase of 88.2 inches, offers enhanced stability for various agricultural applications. Its weight range (6703 to 7188 pounds) allows for effective traction, making it suitable for heavy-duty tasks yet manageable on moderate terrains. The combination of 10.00-16 front tires and 16.9-34 rear tires provides a good balance between flotation and grip, although operators may face challenges in muddy conditions due to potential tire slip.
| Wheelbase | 88.2inches / 224cm |
| Weight | 6703 to 7188 pounds |
| Front tire | 10.00-16 |
| Rear tire | 16.9-34 |
685 SERIAL NUMBERS
| Location | Serial number plate on right front of tractor frame, above the front axle. |
ELECTRICAL
| Ground | negative |
| Battery volts | 12 |