ABB HT610874 Operation Manual page 79

Operation Manual / A130-M.. - A145-M..
7 Periodic maintenance work / 7.4 Cleaning components mechanically
Use clean water to remove all traces of solvent from parts.
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Dry components completely.
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Spray cleaned surfaces with penetrating oil. Do not spray the outer surfaces of the tur-
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bocharger.
Dispose of contaminated water and cleaning agents in accordance with the information
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in the safety data sheet.
Option with cleaning nozzle
CAUTION
Turbocharger damage resulting from the cleaning nozzle breaking off
Incorrect assembly of the cleaning nozzle (51301) can damage the thread of
the turbine casing. The cleaning nozzle (51301) can be plastically deformed
when screwing in the screw connection (02) and during subsequent opera-
tion. Reuse of the cleaning nozzle after loosening the screw connection (02)
can lead to a water leak or the cleaning nozzle breaking off and thus destroy
the turbine.
Only loosen the screw connection (02) if the cleaning nozzle (51301) needs
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to be replaced.
If the screw connection (02) has been loosened, a new cleaning
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nozzle (51301) must be installed and the screw connection must be refit-
ted. Observe the specified tightening torque from the supplier of the
screw connection.
Water or air can be passed through the piping and into the cleaning nozzle to check whether
it is blocked. When installed, the cleaning nozzle can be mechanically cleaned with a needle.
7.4.5 Cartridge group, general
CAUTION
Corrosion
If the cartridge group is not put back into operation immediately after clean-
ing, parts may corrode.
Immediately after cleaning, install the cartridge group and put it back
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into operation.
CAUTION
Oil leak
Damage to the O-ring grooves on the bearing casing can lead to oil leakage.
Sandblasting is not permitted for cleaning the bearing casing.
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Compressor wheels can be heavily contaminated due to poorly filtered suction air; turbines
can be heavily contaminated due to exhaust gas residues or coked oil. Cleaning during oper-
ation may not suffice to remove such contamination; instead, it may need to be cleaned
mechanically during standard service intervals (see chapter Service work).
Remove the turbocharger from the engine (see chapter
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Removing and Installing
HZTL4031_EN
→30).
Rev.P February 2022