Fig. 44: Dismantling The Gas Inlet Casing (180-L And Larger) - Threaded Stud Variant; Table 32: Maximum Admissible Loosening Torque (51087) - ABB XAC22175 Operation Manual

Operation Manual / 4 Product description / A100-L
8 Disassembly and assembly / 8.11 Dismantling the gas inlet casing (≥
A180-L)
8.11.2 Variant with threaded stud
Fig. 44: Dismantling the gas inlet casing (180-L and larger) – threaded stud variant
Product
A180-L
A185-L
A190-L
Table 32: Maximum admissible loosening torque (51087)
If a threaded stud (51086) shears off when loosening, an ABB Turbo Systems Service Sta-
u
tion should be contacted.
If a threaded stud (51086) works loose when removing the nut (51087), it should be refit-
u
ted, after disassembling the gas outlet casing, up to the stop in the gas inlet casing until
hand-tight.
If the nut (51087) cannot be removed with the maximum permissible loosening torque, it
u
can be heated and removed with an appropriate tool.
1. Dismantle both halves of the insulation segment (51215) and remove with all fixing ele-
ments.
2. Detach flange connection between gas inlet casing (51001) and bellows.
3. Treat nuts (51087) with rust remover.
4. Loosen crosswise and remove all nuts (51087) except for two opposite nuts. Note max-
imum admissible loosening torque.
5. Loop around the gas inlet casing (51001) with lifting gear.
6. Loosen and remove remaining nuts (51087).
7. Fit support (90451) on gas inlet casing and put down casing.
© Copyright 2020 ABB. All rights reserved.
Maximum loosening torque [Nm]
HZTL4034_EN
840
1225
1610
Rev.P January 2020