ABB HT603545 Operation Manual page 112

Operation Manual / TPL76-C
8 Disassembly and assembly / 8.8 Dismantling and fitting nozzle ring
at turbine end
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Bend up the locking plates (56018), undo nuts (56022) and remove.
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Pull out nozzle ring.
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Remove threaded stud (56021).
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CAUTION
Fastening the nozzle ring
When fitting the nozzle ring, new threaded studs (56021), nuts (56022)
and locking plates (56018) from the customer spare part set (97070)
must be used.
CAUTION
Clogged areas on the nozzle ring
If a nozzle ring is clogged in some areas or is covered by loose parts, it
is recommended to appoint an ABB Turbocharging Service Station to
inspect the turbine blades and carry out a crack inspection.
Nozzle ring assembly
Carefully clean slots and contact surfaces of the casings and keep
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them free of metal chips.
Keep slots and spiral-wound gasket free of oil and grease.
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CAUTION
Fastening the nozzle ring
When fitting the nozzle ring, new threaded studs (56021), nuts (56022)
and locking plates (56018) from the customer spare part set (97070)
must be used.
HZTL2485_EN Rev.G March 2020