Operation Manual / A100-L
10 Taking a turbocharger out of operation / 10.2 Taking defective tur-
bochargers out of operation
© Copyright 2021 ABB. All rights reserved. HZTL4034_EN Rev.T December 2021
1. If present: Unscrew and remove the connecting screw at the centre of the spinner nose
cone (25012). Dismantle spinner nose cone with press-off screw (90924).
2. Loosen retaining nuts (N) and remove screws (B
1
).
3. Turn back the screw (B
2
) until the slot of the locking device (94003) is free.
4. Position the slot of the locking device on a fin of the wall insert (77000).
5. Align the hole circle of the locking device with the threaded holes in the compressor
wheel (25000).
6. Secure the locking device to the compressor wheel with the maximum possible number
of screws (B
1
). Observe the tightening torque. Assembly with at least 6 screws is mandat-
ory.
The maximum possible number of screws to be fitted (B
1
) varies, as the threads in the
compressor wheel are partially occupied by set screws.
7. Fit screws (B
2
). Observe the tightening torque.
10.2.4 Engines with bypass around the turbocharger
The chapter only applies for engines with one turbocharger and for systems on which the
connections for a bypass have been prepared and the necessary pipe connections have been
provided.
u Close the lubricating oil supply to the turbocharger.
u Open the bypass around the turbocharger.
u Observe specifications from enginebuilder.
Page 110 / 141
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