The S550 Trac-Lock Differential is a high-performance, clutch-type limited-slip differential designed for track-focused driving. It enhances traction by transferring power to the wheel with grip, making it a popular upgrade for enthusiasts seeking improved cornering and acceleration capabilities.
1.1 Overview of the Trac-Lock Limited-Slip Differential
The Ford S550 Trac-Lock Limited-Slip Differential is a high-performance, clutch-type unit designed for track-focused driving. It improves traction by transferring power to the wheel with grip, reducing wheelspin and enhancing cornering stability. Popular among enthusiasts, it offers a balance between street drivability and track capability, making it a sought-after upgrade for the S550 Mustang platform.
1.2 Benefits of Upgrading to a Trac-Lock System
Upgrading to a Trac-Lock system offers enhanced traction, improved cornering grip, and reduced wheelspin. It maximizes power delivery to the wheels, boosting acceleration and stability. Ideal for track use, it improves handling precision and reduces understeer, making it a valuable upgrade for enthusiasts seeking higher performance capabilities in their S550 Mustang.
Understanding How the Trac-Lock Works
The Trac-Lock Differential uses a clutch-type mechanism to dynamically allocate torque between wheels, ensuring optimal traction and stability during high-performance driving conditions.
2.1 Mechanical Components of the Trac-Lock Differential
The Trac-Lock Differential consists of clutch packs, pressure plates, and pre-load springs. These components work together to engage and disengage torque transfer between wheels based on driving conditions. The differential cage houses these elements, ensuring precise control over power distribution. This mechanical setup allows for dynamic torque allocation, enhancing stability and traction during various driving scenarios.
2.2 Operation Under Various Driving Conditions
The Trac-Lock Differential operates by engaging clutch packs to transfer torque between wheels during acceleration or cornering. Under straight-line driving, it functions like an open differential. During aggressive cornering or wheel spin, the clutches engage, directing power to the wheel with better traction. This adaptive behavior enhances stability and control, providing consistent performance across varying road conditions and driving styles.
Tools and Materials Needed for Tuning
Essential tools include a torque wrench, dial indicator, and hydraulic press. Materials like friction modifiers and synthetic gear oil ensure optimal performance and proper setup.
3.1 Essential Tools for Adjusting the Trac-Lock
To properly adjust the S550 Trac-Lock Differential, essential tools include a torque wrench, dial indicator, and hydraulic press. A socket set and impact wrench are also recommended for disassembly. Additionally, a workshop manual provides specific torque specifications and procedural guidance, ensuring accurate adjustments and optimal performance of the limited-slip clutch pack.
3.2 Recommended Materials for Optimal Performance
For optimal Trac-Lock performance, use high-quality gear oil with the correct viscosity rating. Friction modifiers are essential for proper clutch pack engagement. Additionally, consider upgrading to heavy-duty components like reinforced clutch packs and high-strength gaskets. These materials ensure durability and consistent traction, especially under high-stress conditions; Always refer to the manufacturer’s specifications for compatibility and performance.
Step-by-Step Installation Guide
Begin by disassembling the rear axle and removing the factory differential. Inspect and clean components thoroughly. Install the Trac-Lock unit, ensuring proper alignment and torque specifications for bolts. Reassemble the axle, refill with recommended gear oil, and test drive to verify smooth operation and traction performance under various conditions.
4.1 Preparing the Vehicle for Trac-Lock Installation
Begin by safely lifting the vehicle and removing the wheels for access. Disconnect the exhaust and suspension components as needed. Drain the differential gear oil and remove the axles to prevent damage. Clean the housing thoroughly and inspect for wear. Gather all tools, torque specs, and reference materials to ensure a smooth installation process. Proper preparation ensures a successful swap and minimizes potential issues during reassembly.
4.2 Detailed Installation Process
Remove the factory differential and carefully install the Trac-Lock unit, ensuring proper alignment. Secure it with the provided bolts, tightening to the specified torque. Reinstall the axles, making sure they engage smoothly. Refill the differential with the recommended gear oil and bleed the system to eliminate air pockets. Reattach all suspension and exhaust components, then tighten all bolts in the correct sequence. Finally, test the differential operation before lowering the vehicle.
Adjustments and Tuning Tips
Start with the factory-recommended preload and adjust the clutch pack for optimal engagement. Fine-tune the differential based on driving conditions and performance needs for precise control.
5.1 Initial Setup and Calibration
Begin by setting the differential preload as specified in the manufacturer’s guide. Use a torque wrench to ensure accurate preload application. Next, calibrate the clutch pack by adjusting the spring tension according to the desired engagement rate. This step is crucial for achieving the optimal balance between smooth operation and maximum traction. Always refer to the tuning manual for precise torque specifications and adjustment intervals to avoid over-tightening, which can lead to premature wear. Proper initial setup ensures the differential operates efficiently under various driving conditions, providing consistent performance and reliability. Regular monitoring and minor adjustments are recommended to maintain peak functionality over time.
5.2 Fine-Tuning for Specific Driving Scenarios
Fine-tuning the Trac-Lock differential involves adjusting the clutch pack and preload settings based on driving conditions. For track use, increase spring tension to maximize grip during aggressive cornering. On the street, reduce tension for smoother operation. Test adjustments through trial runs, observing how the vehicle responds to acceleration and cornering. Gradual tweaks ensure optimal performance without compromising stability or agility, making the system adaptable to various driving needs and preferences.
Maintenance and Upkeep
Regular inspection of clutch packs and gears for wear is essential. Clean components thoroughly and replace worn parts promptly. Use specified lubricants to prevent damage and ensure smooth operation. Adhere to a maintenance schedule to maximize performance and longevity of the Trac-Lock differential;
6.1 Regular Maintenance Procedures
Regular maintenance involves checking the differential fluid level and replacing it every 30,000 miles. Inspect the clutch packs for wear and clean them with a solvent. Lubricate the gears and bearings with high-quality grease. Ensure all bolts are torqued to specifications. Visually inspect for any signs of damage or excessive wear. Replace any worn components promptly to maintain optimal performance and prevent failure.
6.2 Signs of Wear and Replacement Guidelines
Look for excessive noise, vibration, or fluid leaks as indicators of wear. If the differential exhibits slipping or locking inconsistencies, inspect the clutch packs for wear. Replace worn or damaged components promptly to avoid further damage. Typically, clutch packs should be replaced every 30,000 miles or as needed. Always use genuine parts and consult a professional for complex repairs to ensure optimal performance and reliability.
High-Performance Driving Techniques
Mastering high-performance driving with the S550 Trac-Lock involves precision cornering and optimal acceleration. The limited-slip differential enhances stability, allowing drivers to maintain control during aggressive maneuvers and sharp turns.
7.1 Maximizing Traction in Cornering
The S550 Trac-Lock Differential excels in cornering by transferring power to the wheel with the most grip. Smooth throttle modulation is key to maintaining traction. As the vehicle enters a turn, weight transfer shifts rearward, and the limited-slip design ensures power is delivered where it’s needed most. This results in reduced understeer and improved stability during aggressive cornering maneuvers, especially in track or spirited driving conditions.
7.2 Optimizing Acceleration with Trac-Lock
Optimizing acceleration with the Trac-Lock involves fine-tuning its clutch pack preload and understanding its engagement characteristics. A proper break-in period ensures even wear and consistent performance. Maintaining the differential regularly and checking for wear is crucial. Pairing it with high-grip tires enhances its effectiveness. Adjustments to preload can influence how quickly torque is transferred, aiding straight-line acceleration. Monitoring the car’s behavior during hard acceleration helps identify optimal settings, ensuring maximum traction and stability.
Troubleshooting Common Issues
Common issues with the S550 Trac-Lock include differential noise and loss of traction. Proper diagnosis involves inspecting clutch wear and fluid condition. Regular maintenance can prevent these problems.
8.1 Diagnosing and Resolving Differential Noise
Differential noise in the S550 Trac-Lock often stems from worn clutches or improper preload settings. Inspect the clutch pack for wear and ensure the preload is within specifications. Lubrication levels and condition should also be checked. If noise persists, replacing worn components and recalibrating the differential is recommended. Prompt resolution is crucial to prevent further damage and maintain optimal performance.
8.2 Addressing Loss of Traction Issues
Loss of traction with the S550 Trac-Lock often results from improper torque distribution or worn clutch packs. Check and adjust the preload to ensure even engagement. Inspect the clutch pack for wear and replace if necessary. Ensure proper lubrication and alignment. If issues persist, recalibrate the differential or consider upgrading to higher-performance clutches. Addressing these factors restores traction, enhancing stability and control during aggressive driving scenarios.
The S550 Trac-Lock Differential enhances traction and handling, offering improved performance for track enthusiasts. Proper tuning and maintenance are crucial for optimal functionality, ensuring a responsive and controlled driving experience.
9.1 Summary of Key Takeaways
The S550 Trac-Lock Differential is a high-performance, clutch-type limited-slip differential designed to enhance traction and stability. Proper tuning and maintenance are essential for optimal functionality. By understanding its operation and adjusting it for specific driving conditions, enthusiasts can maximize its benefits. Regular upkeep ensures longevity and reliability, making it a valuable upgrade for track-focused Mustang owners seeking improved cornering and acceleration capabilities.
9.2 Future Upgrades and Modifications
Future upgrades for the S550 Trac-Lock Differential may include advanced clutch packs for improved torque transfer and custom tuning options. Enthusiasts can explore lightweight components and high-performance lubricants to enhance efficiency. Additionally, integrating with modern suspension systems and wheel upgrades can further optimize the differential’s capabilities, offering even greater control and performance for track and street driving applications.