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Operation Manual / A150-M56/66/57/67 - A155-M..

7 Periodic maintenance work / 7.4 Cleaning components mechanically

CAUTION

Water and dirt in the cartridge group

If water or dirt enters the cartridge group, this can impair the function of

the turbocharger and damage parts inside the cartridge group.

u Make sure that no water or dirt enters the gap between partition wall and

turbine.

CAUTION

Non-permissible rotor unbalance after cleaning

Unevenly distributed residual contamination deposits lead to rotor unbal-

ance. This can result in bearing or turbocharger damage.

u Remove all traces of contamination from the turbine.

u After brushing off the dirt, fill the container (02) with clean water and not with salt water .

u Immerse the turbine of the cartridge group in clean water so that any loose dirt comes

off.

u Lift up the cartridge group and align it horizontally.

u Clamp the partition wall to the bearing casing.

u Dry the turbine and the gap between the turbine and the partition wall with low-pressure

compressed air.

u Lightly spray the turbine and the gap between the turbine and the partition wall with pen-

etrating oil.

u Dispose of dirty water and cleaning agents in accordance with the information in the ma-

terial safety data sheet.

Page 75 / 194

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