ABB A135-M55 - Table 4: Tightening Torque for Standard Nuts

Operation Manual / 4 Product description / A130-M.. - A145-M..
2 Removing and Installing / 2.3 Installing the turbocharger
© Copyright 2020 ABB. All rights reserved. HZTL4031_EN Rev.L July 2020
u Observe the instructions for the fastening variant at hand.
¡ Fastening the turbocharger with a standard nut →17 (A130 - A140)
¡ Fastening the turbocharger with a clamping nut →18 (A140 and A145)
2.3.4 Fastening the turbocharger with a standard nut
u Fit the nuts and tighten them according to variant 1 or 2 in the table below.
Product Through hole in
bearing casing
[mm]
Fixing screws
[mm]
Variant 1: Tightening
torques [Nm] **)
Variant 2: Hy-
draulic pre-ten-
sioning forces [kN]
A130 Ø17 M16 280 110
A135 Ø 21 M20 560 175
A140 Ø 25 M24 960 250
Table4: Tightening torque for standard nuts
**) When the turbocharger is mounted on the engine support, the bolt threads and screw
heads must be lightly oiled (assumed friction coefficient µ = 0.12 for tightening torque)
u Remove the lifting gear.
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