ABB A140-H56 Operation Manual page 39

Operation Manual / A130-H.. - A140-H..
4 Removal and installation
4.4.5 Fastening the turbocharger with a clamping nut
Preparations for tightening the clamping nut
Figure 19
Do not clean pressure screws (4)
The pressure screws are equipped with a permanent sliding layer that must
not be removed. Therefore the pressure screws must neither be cleaned nor
WARNING
lubricated. In case of non-compliance, it cannot be ensured that the neces-
sary tension force is reached.
Do not clean pressure screws.

Do not lubricate pressure screws.

Clean the thread of the bolt (1) and the contact surface.

Lightly oil the bolt thread.

Position the thrust washer (2) in place.

Pressure screws (4) must not protrude from the clamping nut (3) in the direc-
tion of the thrust washer (2)
NOTICE In order to correctly fit the clamping nut, the pressure screw must not protru-
de in the direction of the thrust washer.
Tighten the clamping nut (3) by hand and then unscrew it again by ¼ of a turn (90°).

The distance between the thrust washer and the clamping nut is now about 1 mm.
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Revision B
March 2013