1986 International S1700 Dump Truck

[MikePhua]

The 1986 International S1700 dump truck is a classic example of heavy-duty transportation that has stood the test of time. Used extensively in construction, road maintenance, and various industrial applications, the S1700 is a reliable workhorse known for its durability and versatility. This article delves into the features, common issues, and solutions associated with the International S1700, providing a comprehensive guide for those who own, operate, or maintain this iconic truck.
Introduction to the International S1700 Dump Truck
The International S1700, a member of the International Harvester lineup, is part of the company's medium-duty truck series, designed to handle demanding tasks such as hauling and dumping materials. Built during a period when International trucks were renowned for their ruggedness and reliability, the S1700 was a popular choice for businesses in construction, mining, and waste management.
Key specifications include:

• Engine Type: Diesel
  
• Horsepower: Ranges from 210 to 250 hp depending on the model and configuration
  
• GVWR (Gross Vehicle Weight Rating): Approximately 33,000 lbs
  
• Transmission: Manual, typically a 5- or 6-speed setup
  
• Load Capacity: Varies based on dump bed size, with a typical range from 10 to 15 tons
  
• Fuel Tank Capacity: Around 50 gallons
  

The S1700 was built to last, featuring a robust steel frame and reliable drivetrain. Its design was well-suited for long-haul jobs, offering high performance even in challenging conditions. Over the years, many of these trucks have remained in service, especially in construction and aggregate hauling applications.
Common Issues with the 1986 International S1700
Like many vehicles of its age, the 1986 International S1700 is prone to a range of mechanical issues, some of which may require attention for continued operation. These problems can arise from the truck's age, extended use, and wear and tear on critical components.

1. Engine Overheating
   Engine overheating is a common problem in older trucks, and the S1700 is no exception. Overheating can be caused by several factors, including low coolant levels, a faulty thermostat, or a clogged radiator.
   • Symptoms: Rising engine temperature gauge, steam from the radiator, loss of power.
     
   • Potential Solutions:
     • Regularly check coolant levels and top off as needed.
       
     • Inspect the radiator for debris or clogs and clean if necessary.
       
     • Replace the thermostat if it's not functioning correctly.
       
2. Transmission Issues
   The manual transmission in the S1700 can experience problems such as slipping gears, difficulty shifting, or complete failure to engage gears. These issues may stem from low transmission fluid, worn-out clutch components, or internal gearbox failure.
   • Symptoms: Grinding noises, inability to shift gears, jerky movements when changing gears.
     
   • Potential Solutions:
     • Check and replace transmission fluid regularly.
       
     • Inspect and replace the clutch if it’s slipping or not engaging correctly.
       
     • If internal transmission issues are suspected, a rebuild or replacement may be necessary.
       
3. Suspension Wear
   The S1700 is designed to carry heavy loads, which can cause excessive strain on the suspension system. Over time, the shocks, springs, and other suspension components can wear out, leading to poor ride quality, uneven tire wear, and difficulty handling the truck under heavy loads.
   • Symptoms: Bumpy ride, uneven tire wear, truck sagging when loaded.
     
   • Potential Solutions:
     • Inspect suspension components regularly for signs of wear and replace damaged parts.
       
     • Ensure that the load is evenly distributed to avoid unnecessary stress on the suspension.
       
     • Consider upgrading suspension components for improved load handling.
       
4. Brake System Failure
   The brake system in older dump trucks like the S1700 can experience issues such as worn brake pads, damaged brake lines, or malfunctioning air brakes. Given the heavy loads these trucks carry, brake maintenance is critical for safety.
   • Symptoms: Reduced braking power, squealing or grinding noises, longer stopping distances.
     
   • Potential Solutions:
     • Check brake pads and replace them if they are worn down.
       
     • Inspect brake lines for leaks or cracks and repair them promptly.
       
     • Have the air brake system inspected and serviced regularly to ensure optimal performance.
       
5. Electrical System Problems
   As with many vehicles of the same age, the electrical system in the S1700 can develop problems. Common issues include faulty alternators, dead batteries, and corroded wiring.
   • Symptoms: Dimming lights, starting issues, malfunctioning electrical components.
     
   • Potential Solutions:
     • Test the alternator to ensure it is charging the battery properly and replace if needed.
       
     • Inspect the battery for corrosion or signs of wear and replace it if necessary.
       
     • Check the wiring for loose connections or corrosion and clean or repair as required.
       

Maintenance Tips for the International S1700
To keep the 1986 International S1700 running smoothly, regular maintenance is essential. Here are some helpful tips:

1. Regular Fluid Checks: Ensure that engine oil, transmission fluid, and coolant levels are checked and topped off regularly to prevent overheating or internal damage.
   
2. Lubrication: Keep the chassis and suspension components well-lubricated to avoid wear and tear. This includes the steering, axles, and joints.
   
3. Tire Maintenance: Regularly inspect the tires for signs of wear, uneven pressure, or damage. Properly inflated tires contribute to better fuel efficiency and improved handling.
   
4. Battery Maintenance: Clean the battery terminals periodically to avoid corrosion and ensure a good connection. Check the battery’s charge and replace it if it shows signs of failing.
   
5. Brake System Inspections: Given the heavy load the S1700 carries, regular brake inspections are crucial. Replace pads and check air pressure in the brake system to avoid failure during operation.
   

Conclusion
The 1986 International S1700 dump truck remains a valuable asset for many businesses, especially in the construction and industrial sectors. Despite its age, it continues to be a reliable workhorse when properly maintained. By staying on top of common issues such as engine overheating, transmission problems, suspension wear, brake system failures, and electrical malfunctions, operators can ensure that the S1700 remains in service for many years. Regular maintenance and proactive repairs are key to keeping this truck running efficiently, helping operators maximize its performance and longevity.