ABB A155-M Series - Fig. 14: Tightening Pressure Screws; Table 4: Torque-Controlled Tightening of the Pressure Screws

Operation Manual / 4 Product description / A150-M56/66/57/67 -
A155-M..
2 Removing and Installing / 2.3 Installing the turbocharger
© Copyright 2020 ABB. All rights reserved. HZTL4032_EN Rev.P March 2020
Tightening pressure screws
Fig.14: Tightening pressure screws
Product Fixing screw [mm] Tightening torques [Nm]
A150 M30 45
A155 M36 85
Table4: 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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