Iveco Marine Diesel Engines, Installation Handbook

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MARCH 2004 ENGINE INSTALLATION
4.57
MARINE ENGINES INSTALLATION
In the applications with V-drive or in other special applications it is important not to tilt the engine with
the front side down, not to compromise the regular operation of the cooling system, suitably designed
for the tilted operation with the engine front part up; on the contrary, there would be water vapor-
ization in the cylinder heads and the resulting overheating and damaging of the engine.
4.5 AXIS LINE ALIGNMENT
To prevent the early wear of the drive components and the formation of vibrations, the propeller sup-
porting axis, the inverter-reducer and the engine shall be aligned correctly, ensuring the flange paral-
lelism and concentricity are within the values admitted by the inverter and drive manufacturer.
The final alignment shall be carried out after the boat has been in the water for some days. The hull
must be fully laden (full water and fuel reservoirs included) or with corresponding sham load in order
to simulate the possible structural deformations deriving from the load and the floating effect.
Also with the correct alignment, the use of the boat leads to variations in time due to settling which
need the check alignment at least once a year or at every beginning of season.
Figure 5
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