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INSTALLATION
If the gearbox is not flanged directly on to the engine, make sure that the connecting cardan shaft does
not transmit vibration which could damage the transmission.
If the gearbox is instaled separately, with a drive shat, the fountation monting can be either rigid or ela-
stic.
If necessary, in addition to the normal flexible coupling fitted to the engine, fit an extra damper to
absorb the vibration caused by an imperfect alignment.
PROPELLER SHAFT CONNECTION
You are advised to use a thrust bearing to reduce the inevitable axial strain on the gearbox.
Performance data for the propeller shaft bearing will depend on the loads applied during operation,
and must be specified by the designer and builder of the boat.
The alignment must be checked with the boat in the water, as the deformation of the hull in the water
is enough to alter an alignment done on stands.
X [mm]
0.05 max
Y [mm]
0.1 max
L [mm]
min. 500 for d
min. 1000 for d 60 ÷ 90 mm
min. 2000 for d
< 60 mm
> 90 mm
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Fig. 1.4
Fig. 2.4
GB
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