Tightening The Clamping Nut - ABB axial A100-M Series Original Assembly Instructions

Assembly Instructions / A170-M, A175-M
4 Installing the turbocharger / 4.1 Tightening the clamping nut
4.1

Tightening the clamping nut

Preparation for tightening
CAUTION
Do not clean pressure screws (d)
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.
u
Do not lubricate pressure screws.
u
NOTICE
Pressure screws (d) must not protrude from the clamping nut (c) in the dir-
ection of the thrust washer (b)
In order to correctly fit the clamping nuts, the pressure screws must not
protrude in the direction of the thrust washer.
Fig. 10: Tightening the foot screws (1)
1. Clean the bolt thread (a) and the contact surface.
Coat the bolt thread with grease.
2. Fit thrust washer (b) (component of clamping nut).
3. Tighten clamping nut (c) by hand.
4. Screw back clamping nut by ¼ of a turn (90°).
The distance between the thrust washer and the clamping nut is now about 1 mm.
© Copyright 2020 ABB. All rights reserved. HZTL455311P0007_EN Rev.A July 2020