5.4.2 Rigid mounting

5. Installation and Arrangement

5.4.2 Rigid mounting

are the most important disturbances only the foundation is subjected depend on the mounting arrangement and the rigidity of the foundation itself.

The dynamic foundation forces can be considerably reduced by means of resilient engine mounting.

General note:

The shipyard is solely responsible for the adequate design and quality of the foundation.

side stoppers and alignment bolts is to be gathered from the foundation plans.

When installing the engine on steel chocks the top plate should be build with an inclination outwards from the engine centerline. Wedge type chocks with the corresponding inclination only be used.

The material can be cast iron or steel.

Surface treatment:

The supporting surface of the top plate has to be milled. When fitting the chocks, a bearing contact of min. 80 % is to be obtained.

Outwards inclination of top plate are needed in case of usinf steel chocks. Withour this it is not permissible to install steel chocks.

5. Installation and Arrangement

Side stoppers

6 M 25 C 8/9 M 25 C 1 Pair 1) 2 Pairs 2)

1) 1 pair at end of bed plate 2) 1 pair at end of engine block and 1 pair between cyl. 4 and 5.

Side stopper to be with 1 wedge (see sketch). Wedge to be placed at operating temperature and secured by welding.

Number of bolts

6 M 25 C 4 24 8 M 25 C 4 32 9 M 25 C 4 36

Jacking bolts

To be supplied by yard: steel chocks, cast resin

66

5. Installation and Arrangement

Proposal for rigid mounting

Pre-tightening force Cast resin Steel Through bolts M 24 Through bolts M 24

100,000 100,000 170,000 170,000

Bolts and chocks are yard supply. Design responsibility is with the yard.