Dismantling The Gas Inlet Casing (≥ A180-L); Fig. 45: Dismantling The Gas Inlet Casing (180-L And Larger); Table 33: Maximum Admissible Loosening Torque (51087) - ABB XAC25870 Operation Manual

Operation Manual / A100-L
9 Disassembly and assembly / 9.12 Dismantling the gas inlet casing (≥
A180-L)
9.12 Dismantling the gas inlet casing (≥ A180-L)
Fig. 45: Dismantling the gas inlet casing (180-L and larger)
Product
A180-L
A185-L
A190-L
Table 33: Maximum admissible loosening torque (51087)
If a threaded stud (51086) shears off when loosening, an ABB Turbocharging 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 or 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.
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Maximum loosening torque [Nm]
HZTL4034_EN
840
1225
1610
Rev.T December 2021