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Operation Manual / A170-M.. - A175-M..

9 Disassembly and assembly / 9.14 Removing and installing turbine-

end nozzle ring

9.14 Removing and installing turbine-end nozzle ring

Removing the nozzle ring

If only the nozzle ring has to be removed, this can be done at the turbine end.

CAUTION

Leaking connection

Reusing the removed spiral-wound gasket (61050) will result in leaking con-

nections. Spiral-wound gaskets may only be used once.

u Provide new spiral-wound gasket (61050).

NOTICE

Blocked areas on nozzle ring

If a nozzle ring is blocked in some areas or is covered by loose parts, it is re-

commended to appoint an ABB Turbocharging Service Station to inspect the

turbine blades and carry out a crack inspection.

In order to access the fixing screws, and loop around and transport the gas inlet casing, the

insulation has to be removed as required.

CAUTION

Damaged cleaning pipes

When looping around, ensure that any cleaning pipes present are not

pressed or damaged.

u Never secure the lifting gear to the cleaning pipes.

Page 112 / 146

ABB HT596622 User Manual

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