ABB HT568005 Operation Manual page 121

CAUTION
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Disassembly and assembly
Dismantling and fitting nozzle ring at
turbine end
Bend up the locking plates (56018), undo screws (56019) and remove.

Remove nozzle ring (56001).

Nozzle ring assembly
Carefully clean grooves and contact surfaces of the casings and keep

them free of metal chips.
Keep grooves and spiral-wound gasket free of oil and grease.

Fastening the nozzle ring
When fitting the nozzle ring, new screws (56019) and locking plates
(56018) from the customer spare part set (97070) must be used.
Push in nozzle ring (56001) as far as it will go up to cover of gas inlet

casing.
Operation Manual / TPL76-C
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8.8 Page 119