Fig. 7: Loosening The Clamping Nut - ABB HT575750 Operation Manual

Operation Manual / 4 Product description / A130-M.. - A145-M..
2 Removing and Installing / 2.2 Removing the turbocharger
2.2.2 Loosening the clamping nut
CAUTION
Incorrect procedure can make loosening impossible
Never relieve individual pressure screws completely. If this procedure is not
complied with, the pressure screws can get compressed, thus making it im-
possible to loosen them.
Comply with the following steps for loosening the pressure screws.
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CAUTION
Do not clean pressure screws
The pressure screws are equipped with a permanent sliding layer that must
not be removed.
Do neither clean nor lubricate the pressure screws. In case of non-compli-
ance, it cannot be ensured that the necessary tension force is reached.
Do not clean pressure screws.
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Do not lubricate pressure screws.
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Fig. 7: Loosening the clamping nut
Working in a circle, break loose all pressure screws of the clamping nut.
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Working in a circle, loosen each of the pressure screws by about ¼ of a turn (90°).
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Repeat the previous step until all pressure screws are relieved of pressure.
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Loosen clamping nut by hand.
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© Copyright 2017 ABB. All rights reserved. HZTL4031_EN Revision F August 2017