Insufficient lubrication is also known as oil starvation or lack of lubrication. During this video we will be analysing what causes insufficient lubrication, show you the signs of insufficient lubrication and how you can prevent turbocharger failure caused by insufficient lubrication. For more information, check out – Transcript
Hi, I’m Antony, I work here in Melett’s Technical team.
Welcome to our latest Turbo Tips Video – Insufficient Lubrication.
Today we will be discussing causes, signs and preventions associated with Insufficient Lubrication.
What is Insufficient Lubrication? Insufficient Lubrication is one of the most common reasons why turbochargers fail. Oil is a vital component; it cools and lubricates the journal and thrust systems of the CHRA. If there is Insufficient oil in these areas the CHRA is likely to fail.
Let’s look at some of the causes of Insufficient Lubrication.
Failure to prime the Turbocharger before installation.
Any damaged, bent or partially blocked Oil Feed Pipes.
And, never use silicone on the inlet or outlet as this will restrict the oil flow to the turbocharger.
A more in-depth list of causes can be found on our website.
Failure to prime the Turbo
Damaged Oil Feed Pipe
Never use silicone
Let’s look at some of the sign of Insufficient Lubrication. Most of the damage from Insufficient Lubrication will be visible on the Shaft and Wheel.
Here you can see material transfer on the Shaft and Wheel landing areas.
The discolouration caused by Insufficient Lubrication.
Signs of Insufficient Lubrication can also be found on the Journal Bearing.
On the ID of the Journal Bearing, we can see material displacement.
This could cause the oil feed holes to become partially/fully blocked, restricting the oil flow to the Shaft and Wheel.
Next, we are going to look at the Thrust system: Thrust Bearing, Thrust Flinger, Thrust Collar and Thrust Washer. Let’s look at these in more detail.
The Thrust Bearing will show signs of wear caused by Insufficient Lubrication.
Material transfer from the Thrust Bearing will be visible on the Thrust Collar, Flinger and Washer.
These are key indicators that a turbo has failed from Insufficient Lubrication.
We have discussed the causes and looked at the signs. Now let’s discuss how to prevent Insufficient Lubrication from occurring.
Always check the oil flow to the turbocharger and you have primed the turbo before installation. Never use silicone on the inlet or outlet and if possible new fresh oil and a new oil filter.
For any more information, check out our PDF on the website.
Check the oil flow
Prime before installation
Never use silicone
Use fresh oil and a new oil filter
Melett Turbo Tip – One of the misunderstandings regarding Insufficient Lubrication is there is no oil present in the turbocharger, this is incorrect, the oil that is present is not enough to do the job required and will lead to the turbocharger failing.
Thank you for watching and we will see you next time for another Melett turbo tip video.
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