Operation Manual / A170-M.. - A175-M..
9 Disassembly and assembly / 9.14 Removing and installing turbine-
end nozzle ring
© Copyright 2022 ABB. All rights reserved. HZTL4033_EN Rev.K January 2022
Product Size Tightening torque [Nm]
A170-M M10 50
A175-M M10 50
Table52: Tightening torque (56014)
Product Size Tightening torque [Nm]
Stage 1 Stage 2 Stage 3
A170-M M18 80 170 280
A175-M M20 100 240 380
Table53: Tightening torque (61009)
1. Coat threads of new screws (56014) with high-temperature grease.
Fit the nozzle ring (56001) to the gas inlet casing (51001) using the screws (56014) and
new locking washers (56015).
Bend over locking washers.
2. Fix new spiral-wound gasket (61050) in groove of gas outlet casing (61001) at three
evenly distributed points with a little superglue (such as Loctite®454).
3. Fit two guide studs (90321) in the upper part of the gas outlet casing (61001).
4. Coat threads of screws (61009) with high-temperature grease.
5. Loop around gas inlet casing (51001) and, using lifting gear, slide over guide studs until
at the gas outlet casing (61001) and secure with screws (61009).
6. Remove the guide studs (90321).
7. Fit remaining screws (61009), then crosswise tighten all screws (61009). Observe tight-
ening torque.
8. If present: Fit connecting pipe for turbine cleaning
u Refit dismantled insulation.
Page 115 / 146
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