Operation Manual / 4 Product description / A100-L
8 Disassembly and assembly / 8.8 Dismantling the insulation, the gas
inlet casing and the nozzle ring (A175-L and smaller)
© Copyright 2018 ABB. All rights reserved. HZTL4034_EN Revision N November 2018
Dismantling the gas inlet casing (A175-L and smaller) – threaded stud variant
Fig.40: Dismantling the gas inlet casing (175-L and smaller) – threaded stud variant
Part number A165-L A170-L A175-L
51087 245 Nm 350 Nm 665 Nm
Table31: Maximum admissible loosening torque (51087)
u If a threaded stud (51086) shears off when loosening, an ABB Turbo Systems Service Sta-
tion should be contacted.
u If a threaded stud (51086) works loose when removing the nut (51087), it should be refit-
ted, after disassembling the gas outlet casing, up to the stop in the gas inlet casing until
hand-tight.
u If the nut (51087) cannot be removed with the maximum permissible loosening torque, it
can be heated and removed with an appropriate tool.
1. Treat nuts (51087) with rust remover
2. Loosen crosswise and remove all but two opposite nuts(51087). Note maximum admiss-
ible loosening torque.
3. Loop around the gas inlet casing(51001) with lifting gear.
4. Loosen and remove remaining nuts(51087).
5. Carefully move out gas inlet casing and put down.
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