ABB A238-H Series Original Assembly Instructions page 17

Assembly Instructions / A200-H
4 Installing the turbocharger / 4.4 Fastening the turbocharger with a
clamping nut
Tightening pressure screws
Fig. 11: Tightening pressure screws
Product
A238-H
A240-H
Table 9: Pressure screw tightening torques
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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Fixing screw [mm]
M20
M24
HZTL455311P0042_EN
Tightening torque [Nm]
38
35
Rev.A September 2021