The images included were taken recently of a Garrett turbocharger fitted to a Mercedes diesel. As shown, the oil has deteriorated to such an extent that coking has occurred, resulting in the blockage of oil galleries that supply the bearings and thrust components, ultimately leading to failure. Proper maintenance, including the use of the correct oil grades and adherence to the manufacturer’s recommended oil change intervals, is essential to prevent such issues.
Several factors can contribute to turbocharger failure, including:
- Leaking injector seals
- Elevated exhaust temperatures due to a restricted exhaust system or suboptimal tuning
- Driving habits: Stop-and-start driving conditions can prevent the engine from reaching optimal operating temperature, accelerating oil degradation.
Understanding these factors can help ensure the longevity and performance of your turbocharger.
Turbocharger Disassembly and Assessment
Our technicians are expertly trained in the disassembly and assessment of turbochargers, which includes the following steps:
- Removing the housings: Inspecting for cracks and deformation.
- Examining the wheels: Checking for any signs of damage, such as foreign object impact.
- Disassembling the CHRA (Center Housing Rotating Assembly): Evaluating internal components for wear.
Assessing the condition of the turbocharger is where our extensive knowledge and experience truly shine. Turbochargers are intricate and highly technical components, with tolerances so precise that even the slightest variance can lead to significant issues.
Our technicians undergo years of training, equipping them with the skills and observational techniques necessary to meticulously evaluate each component. They are adept at identifying common faults we encounter regularly. However, when faced with an unusual issue, they collaborate and share insights, fostering an environment of problem-solving. It is particularly rewarding to diagnose a challenging fault and provide accurate guidance to the installer—these moments represent the pinnacle of our work at Turbo Care.
Common causes of turbocharger failure typically include:
- Foreign Object Damage
- Blocked Diesel Particulate Filter (DPF) in diesel vehicles
- Contaminated Oil
- Overspeeding
- Insufficient Lubrication
By addressing these issues promptly and effectively, we ensure the optimal performance and longevity of turbochargers.
