As a repair professional, you know how critical it is to maintain diesel common rail injectors to ensure optimal engine performance. However, inconsistent repair quality, lack of proper tools, and low-quality spare parts can lead to repeated failures, dissatisfied customers, and lost revenue. Our OEM-quality injector maintenance process and high-performance products are designed to help you overcome these challenges and deliver reliable repairs every time.

Common Challenges in Injector Repairs

• High Failure Rates: Poor-quality repairs or substandard parts often result in repeated injector failures, costing time and money.
• Time-Consuming Processes: Inefficient repair methods can significantly increase downtime and labor costs.
• Lack of Proper Tools: Without specialized equipment, achieving precise repairs and accurate diagnostics is nearly impossible.
• Unreliable Spare Parts: Low-quality components compromise repair durability and customer trust.

Our Solution: Precision Maintenance with OEM-Quality Standards

Our Bosch-approved maintenance process and OEM-quality products are tailored to address these challenges head-on. By combining advanced tools, high-performance spare parts, and a meticulous step-by-step approach, we help you achieve repairs that meet or exceed factory standards.

Why Choose Our OEM Products & Services?

• OEM-Quality Parts: High-performance components that match or exceed OEM specifications, ensuring durability and reliability.
• Specialized Tools: Advanced equipment like the Bosch EPS815 and EPS708 for precise testing and adjustments.
• Cost-Effective Repairs: Reduce repair time and costs while maintaining the highest quality standards.
• Expert Support: Access to technical guidance and training to enhance your team’s skills and efficiency.

Step-by-Step Maintenance Process

1. Initial Inspection

• Visual Check: Ensure all parts are intact, the injector assembly has not been disassembled, the solenoid valve is undamaged, and the housing shows no severe wear.
• Solenoid Valve Test: Use a multimeter to test the solenoid valve resistance, ensuring it meets OEM standards.

2. External Cleaning

• Remove O-Rings and Gaskets: Carefully remove O-rings and gaskets to prepare for cleaning.
• Seal Oil Holes: Seal the oil holes to prevent contamination during cleaning.
• Surface Cleaning: Use a suitable cleaner and a soft brush to clean the surface. Avoid using wire brushes, as they can damage the injector nozzles.
• Ultrasonic Cleaning: Immerse the injector in a 70℃ phosphate-free cleaner and use ultrasonic cleaning for 20 minutes to remove all dirt and debris.

3. Quick Testing

• Using Bosch EPS205: Test the injector for leaks, return flow, and injection flow under various conditions to ensure it meets performance requirements.

4. Disassembly

• Secure the Injector: Fix the injector vertically in the disassembly tool.
• Remove the Nozzle: Carefully remove the nozzle.
• Remove the Solenoid Valve: Detach the solenoid valve, paying attention to the terminal orientation. Mark the terminals for accurate reassembly.
• Remove Additional Components: Remove the valve fastening screws, valve components, and high-pressure seals in sequence.

5. Internal Parts Cleaning

• Ultrasonic Cleaning: Immerse the internal parts in a 70℃ cleaner and use ultrasonic cleaning for 15 minutes to ensure thorough cleanliness.

6. Parts Evaluation

• Inspect Components: Evaluate all parts for wear or damage.
• Replace Faulty Parts: Any parts that fail evaluation must be replaced with OEM-quality components.
• Prepare Repair Kit: Take the injector repair kit from the warehouse and soak it in clean diesel before use.

7. Parts Assembly

• Dry Components: Use clean compressed air to dry all parts.
• Controlled Environment: Assemble the injector in a dust-free workshop equipped with advanced air purification systems.
• Adjust Mechanical Structure: Use assembly adjustment tools and select the appropriate shims to adjust the injector’s mechanical structure to meet specifications.

8. Injector Testing

• Using Bosch EPS815, DCI700 or EPS708: Test the injector’s hydraulic performance to ensure it meets factory standards.
• Qualified Technician: Only technicians who have completed Bosch training and are certified should operate the test bench.
• Qualified Repair Standards:
  • No external damage
  • Worn internal parts replaced
  • Mechanical structure precisely adjusted
  • Passes hydraulic performance tests

9. Packaging

• Final Visual Check: Ensure all parts are complete, the injector assembly is intact, and the solenoid valve is undamaged.
• Solenoid Valve Test: Use a multimeter to test the solenoid valve resistance once more before packaging.

10. On-Vehicle Testing

• Install and Test: Install the repaired injector in the vehicle and conduct a real-world test to ensure it performs flawlessly.
• Customer Delivery: Only after passing the on-vehicle test is the injector ready for delivery to the customer.

Technical Tips for Repair Professionals

• Always Use OEM-Quality Parts: High-performance components ensure long-lasting repairs and customer satisfaction.
• Invest in Proper Tools: Specialized equipment like the Bosch EPS815, DCI7000 ensures accurate testing and adjustments.
• Follow Best Practices: Adhere to standardized maintenance procedures to achieve consistent results.