Restoring a 1979 Peterbilt: A Journey of Classic Truck Maintenance

[MikePhua]

The 1979 Peterbilt, a timeless classic in the trucking world, continues to capture the hearts of enthusiasts and professionals alike. Known for its powerful performance, rugged durability, and distinct design, the 79 Pete remains a symbol of American trucking heritage. However, owning and maintaining such a vintage truck presents its own set of challenges. Over the years, components wear out, systems degrade, and even the most reliable trucks need attention.
In this article, we’ll explore the process of restoring and maintaining a 1979 Peterbilt, with a focus on common issues, maintenance tips, and how to keep this classic truck in top condition for years to come.
The Appeal of the 1979 Peterbilt
The 1979 Peterbilt is a model that stands out in the trucking world, even decades after its production. Peterbilt has built a reputation for high-quality trucks with advanced engineering, and the 79 Pete is a prime example of that legacy. Many trucking enthusiasts and collectors are drawn to these trucks not just for their power but also for their distinctive style.
With a long hood, classic chrome grille, and rugged chassis, the 79 Pete was designed for long hauls and heavy-duty work. Its robust build made it ideal for both on-highway and off-highway applications, from transportation to construction. Though Peterbilt has evolved over the years, the 79 Pete remains a symbol of American craftsmanship in the trucking industry.
Common Issues with the 1979 Peterbilt
While the 1979 Peterbilt is a well-built truck, age and usage can take their toll. Here are some common issues that owners often encounter:

1. Engine Wear and Tear: The engine, while durable, can show signs of wear after decades of use. Common problems include excessive oil consumption, loss of compression, and overheating. Overhauling the engine or replacing worn-out parts like pistons, valves, and rings may be necessary to keep the truck running smoothly.
   
2. Suspension System: The suspension system in the 79 Pete is integral to the truck’s comfort and handling, especially on long hauls. Over time, shocks and bushings wear out, leading to a rougher ride and potential instability. Replacing worn suspension components will help restore comfort and ensure the truck’s handling is as good as it was when it first rolled off the production line.
   
3. Rust and Corrosion: Like many vehicles of its age, the 79 Peterbilt is susceptible to rust and corrosion, especially in areas prone to moisture and road salt. It’s not uncommon for owners to find rust spots on the frame, wheel wells, or undercarriage. Regular cleaning, rust treatment, and preventative coating can help extend the lifespan of the truck’s frame and body.
   
4. Electrical System Issues: The electrical systems in older trucks, especially those manufactured in the late 70s, can be prone to failures. Wiring may degrade, and components such as alternators, starter motors, and relays may need replacement. A thorough inspection of the electrical system and routine maintenance can prevent sudden failures during operation.
   
5. Transmission and Clutch Problems: The transmission and clutch in the 79 Pete were built for durability, but over time, they can experience issues such as slipping gears, hard shifting, or clutch wear. Rebuilding the transmission or replacing the clutch can restore the truck’s performance and smooth shifting.
   

Restoring the 1979 Peterbilt: A Step-by-Step Guide
Restoring a 1979 Peterbilt is no small task, but for those who are willing to put in the effort, the reward is a truck that runs like new while retaining its classic charm. Here’s a step-by-step guide for a successful restoration:

1. Initial Inspection: Before starting any restoration work, it’s important to thoroughly inspect the truck. This means checking the engine, transmission, suspension, electrical system, and the overall frame for rust or damage. Take notes on areas that require immediate attention and areas that can be worked on later. This will help create a restoration plan and budget.
   
2. Engine Overhaul: The heart of any truck is the engine. If the engine is running well, a full rebuild may not be necessary, but it’s a good idea to perform a complete inspection. Check the oil, radiator, belts, hoses, and filters. If the engine is in poor condition, consider an overhaul or replacing major components. Keep in mind that modernizing the engine with newer technology (such as fuel injectors or turbochargers) can improve performance while still preserving the truck’s vintage appeal.
   
3. Suspension and Steering: Upgrading or replacing the suspension system is crucial for comfort and safety. After decades of service, parts like shocks, springs, and bushings can wear out. Replacing these with modern, durable components will improve the ride and handling of the truck. Pay attention to the steering components as well, as worn-out steering mechanisms can lead to unsafe driving conditions.
   
4. Frame and Bodywork: Rust is a common issue in older trucks, and the 79 Peterbilt is no exception. The first step in restoring the bodywork is to remove any rust and treat it with a rust-inhibiting agent. After that, you may need to patch up holes or replace sections of the body or frame. This is also a good time to repaint the truck to restore its original luster or give it a new look.
   
5. Electrical System Overhaul: Old wiring can be a significant safety hazard. Replacing the wiring harness and upgrading to modern electrical components will reduce the risk of electrical failures. Additionally, upgrading to LED lighting can enhance visibility and reduce the energy load on the electrical system.
   
6. Transmission and Clutch: If the transmission or clutch has shown signs of wear, consider rebuilding the transmission or replacing key components like the clutch, gearbox, or shifter assembly. A well-maintained transmission ensures smooth shifting and increases the lifespan of the truck.
   
7. Interior Restoration: The interior of the 1979 Peterbilt may have also seen its share of wear over the years. Reupholstering the seats, replacing the dashboard components, and upgrading the sound system are just some ways to bring the cab back to its former glory. Restoring the interior not only makes the truck more comfortable but also adds to the overall charm of the vehicle.
   

Maintaining a Classic: Tips for Ongoing Care
Once the 1979 Peterbilt is restored, regular maintenance is essential to ensure it continues to run smoothly. Here are some maintenance tips:

• Regular Oil Changes: Change the engine oil at regular intervals to keep the engine running smoothly. Make sure to use high-quality oil that is appropriate for the engine’s age and specifications.
  
• Check Hydraulic Fluids: If the truck uses hydraulic systems (for example, in a dump truck configuration), check the hydraulic fluids regularly and replace them when necessary to avoid system failures.
  
• Grease the Chassis: Regularly grease the chassis, suspension components, and drive shaft to ensure proper lubrication and avoid wear.
  
• Inspect Brakes and Tires: Always check the brakes and tires for wear, especially on older trucks like the 79 Pete. Brake fluid, pads, and tires should be regularly maintained for safety and performance.
  

Conclusion: Bringing New Life to a Classic
Restoring and maintaining a 1979 Peterbilt is not just about fixing a truck—it’s about preserving a piece of American history. While it requires a significant investment of time, effort, and resources, the satisfaction of getting a classic truck back on the road is unparalleled. Whether you're using it for work or showing it off at classic truck shows, the 79 Pete remains a symbol of resilience, craftsmanship, and the timeless appeal of vintage American trucks.
Through careful restoration and regular maintenance, these classic trucks can continue to serve as powerful, functional vehicles for many years to come.