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Operation Manual / A170-M.. - A175-M..
3 Removal and installation / 3.3 Installing the turbocharger
© Copyright 2021 ABB. All rights reserved.
HZTL4033_EN
Rev.H
July 2021
Tightening procedure
Fig. 22: Tightening procedure
Product
Fixing screw [mm]
Tightening torques [Nm]
A170-M
M30
45
A175-M
M36
85
Table 9: Torque-controlled tightening of the pressure screws
1. Screw in pressure screws crosswise by hand until reaching the stop.
2. Tighten pressure screws crosswise to 50 % of the tightening torque specified in the
table.
3. Tighten pressure screws crosswise to 100 % of the tightening torque specified in the
table.
4. Work in a circle to tighten all pressure screws to 100 % of the tightening torque specified
in the table.
5. Tighten pressure screws to 100 % in 5 … 7 rounds until the required residual tightening
angle of < 20° is achieved.
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