Removing The Turbocharger - ABB A155-M57 Operation Manual

Operation Manual / 4 Product description / A150-M.. - A155-M..
2 Removing and Installing
2.2

Removing the turbocharger

The gas outlet casing (61001) can remain fitted in the exhaust gas pipe if the locking nuts are
accessible. Otherwise the complete turbocharger unit including gas outlet casing must be re-
moved.
Disconnect all pipes according to the instructions of the enginebuilder.

If present: Loosen and remove the compressor wheel cooling connection. Close the com-

pressor wheel cooling opening with a screw plug (01).
If present: Disconnect the plug to the speed sensor (86505) and secure the rolled-up cable

on the turbocharger. This protects the plug from being crushed.
Figure 6: Removing the turbocharger
Treat threaded rods (42191) with penetrating oil and leave it on.

Secure the lifting gear to the turbocharger (see illustration).

If present: Detach the support (61301) from the engine support.

2.2.1 Loosening the clamping nut
Incorrect procedure can make loosening impossible
Never relieve individual pressure screws completely. If this procedure is not
complied with, the pressure screws can get compressed, thus making it im-
CAUTION
possible to loosen them.
Comply with the following steps for loosening the pressure screws.

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Revision F January 2017