I'm sorry for not perfect english. In time I'll do a good quality translate. If you could not get anything please feel free to contact me in comments. I will answer you as soon as possible.
It was decided to disassemble and clean the turbine to see the inside. Suddenly, what should be replaced.
How to remove it in stages described in other articles: you remove the nozzle, then the rocker cover, camshaft, it is desirable to lifters, not spilled. And after all of the above remove the cylinder head the exhaust manifold. You may need to remove the exhaust manifold.
If rough, then the turbine consists of three parts: a core, "snail" exhaust gas "snail" air.
"Snails"-a piece of iron, named for its resemblance to the eponymous shellfish.
The interesting part-the middle,. It contains the mount, bearings, axle, on which the two impellers, as well as the middle, connected to the oil supplying pipe.
To remove the exhaust "snail" to unscrew a small screw that holds the clip in the form of two clips and remove it (green rectangle).
Next, unscrew the vacuum diaphragm (it held by two screws) and remove the air hose.
Now, this part holds nothing but rust and dirt and can be removed carefully. Carefully, because it is directly under the impeller, and it need not be damaged.
Impeller cleaned from dark plaque.
Pumps the impeller to get out of "snail" was not only the top looked at her and brushed.