Alamarin Jet AJ 160, Руководство по эксплуатации и обслуживанию

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Operation and Maintenance Manual
1818
Version 1.5
18
3. Functions
3.1. Transmission
The jet takes its propulsion power from a petrol or a diesel engine. The most common
way to transmit the power is through a 1:1 gear box, but direct drive is also possible
and functional. The greatest benefits of a gear box are a real neutral gear and an intake
duct backflush.
In the direct drive or so-called bobtail installation it is commendable to use a flywheel
adapter provided by the engine manufacturer. It protects the flywheel from mechanical
damages and e.g. corrosion.
The auxiliary shaft which is connected between the jet and the engine usually depends
on the boat manufacturer. If necessary, the jet manufacturer supplies the auxiliary shaft
with the propulsion unit. It is also possible to get instructions and recommendations
from the manufacturer on which auxiliary shaft to use. In the end, the shaft
manufacturer gives instructions on the installation and maintenance of the shaft. Below
is a list of example shafts which have been used with the jet.
1. Constant velocity shaft
- Joint structure based on balls rolling on a spherical surface.
2. Cardan shaft
- Joint structure based on pivoted grids.
3. Silent block shaft
- Joint structure based on an elastic rubber element
THE AUXILIARY SHAFT MUST ABSOLUTELY BE OF
HIGH ENOUGH QUALITY AND PROPERLY BALANCED. A
POOR SHAFT CAN CAUSE EXCESSIVE DAMAGE TO THE
PROPULSION UNIT.
THE ALIGNMENT OF THE AUXILIARY SHAFT MUST BE KEPT
ACCURATE. IT MUST BE CHECKED AT LEAST ONCE EVERY
DRIVING SEASON (YEAR).