Turbocharger · Turbochargers
Regular maintenance and timely replacement of critical components are essential to ensure the optimal performance and longevity of your turbocharger. The Everllence TCR12, part of the TCR series formerly under the MAN brand, is designed for handling exhaust gas and charge air with its radial turbine type. Common issues such as compressor fouling, bearing distress, turbine fouling, and rotor imbalance can be mitigated through diligent servicing. Keeping a stock of spare parts, particularly the bearing and seal kit, is crucial. In some cases, cartridge exchange may offer a faster solution compared to onboard repairs. Servicing should always adhere to the manufacturer's manual and meet classification society requirements. Annual inspections during class surveys are recommended to ensure compliance and reliability. By following these guidelines, you can maintain the high performance and efficiency of your Everllence TCR12 turbocharger, minimizing downtime and maximizing operational effectiveness.
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What our service work and the manufacturer documentation say about keeping this model running.
Servicing per the manufacturer's manual and classification society requirements. Annual inspection at class survey. Stock spare parts as specified by the manufacturer.
| Daily/Weekly | Performance monitoring (boost pressure, exhaust temp, RPM, vibration), visual check for leaks/abnormal noise. |
|---|---|
| 500-1000 Running Hours | Compressor water wash (if fitted and required by operating conditions). |
| 2000-4000 Running Hours | Inspection of compressor side, cleaning if necessary. Check bearing play. |
| 8000-12000 Running Hours | Major inspection of bearings (journal and thrust), seals, and rotor assembly. Replacement of bearings and seals as per manufacturer's recommendations. Cleaning of turbine and compressor sides. Check for rotor imbalance. |
| 24000-36000 Running Hours | Major overhaul (complete disassembly, NDT of critical components, replacement of wear parts, dynamic balancing of rotor assembly). |
| Bearing Radial Clearance (Journal) | Typically 0.05 - 0.15 mm (new). Replace if exceeding 0.25 - 0.30 mm or manufacturer's specific limit. |
|---|---|
| Bearing Axial Clearance (Thrust) | Typically 0.10 - 0.25 mm (new). Replace if exceeding 0.35 - 0.45 mm or manufacturer's specific limit. |
| Rotor Run-out (at specific points) | Max. permissible 0.02 - 0.05 mm. Exceeding this indicates imbalance or bent shaft. |
| Blade Tip Clearance (Compressor/Turbine) | Critical and model-specific, typically 0.3 - 0.6 mm. Any contact or significant reduction indicates severe issue. |
| Casing Cracks/Deformation | Any visible cracks, especially in the turbine casing, or significant deformation are unacceptable and require repair/replacement. |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyors will typically review maintenance records, verify compliance with manufacturer's service bulletins, and conduct a visual inspection of the turbocharger's external condition (leaks, damage, security of mounting). During special surveys (e.g., 5-year), an internal inspection of the compressor and turbine sides may be required, often involving opening the casings. They will also check the functionality of safety devices (e.g., overspeed trip) and confirm the availability of critical spare parts onboard. Performance data trends are also often reviewed.
Estimated lifetime: 24,000 to 36,000 running hours before major overhaul, with proper intermediate maintenance and component replacement, the overall service life can extend significantly beyond this.
Keep bearing and seal kit; cartridge exchange may be faster than onboard repair.
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