Operation Manual / A150-M56/66/57/67 - A155-M..
3 Removing and Installing / 3.3 Installing the turbocharger
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
Tightening pressure screws
Fig.20: Tightening pressure screws
Product Fixing screw [mm] Tightening torques [Nm]
A150 M30 45
A155 M36 85
Table6: 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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