Alamarin Jet AJ 160, Руководство по эксплуатации и обслуживанию

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29 Operation and Maintenance Manual
Version 1.5 Version 1.5
All maintenance that has been done to the propulsion unit can be entered in the
Maintenance Log. The Maintenance Log is Appendix 1.
4.3. The Impeller
The impeller usually wears on the outer edge of the blades. It operates in a cone-shaped
space and its position can be adjusted in the direction of the shaft in accordance with the
blade wear.
The gap between the outer edge of the blades and the cone should be as small as
possible to achieve best efficiency. (Factory installation gap 0.2 mm).
The longitudinal position of the impeller in the duct reveals its power demand. The
deeper the impeller sits, the less power it takes from the engine, because the diameter
of the impeller is smaller. The pitch and the length and number of blades naturally also
affect the power demand.
daily weekly montly every 6 months yearly
Jet inlet duct
cleaness of inlet surfaces x
(no marine growth etc.)
Front bearing
Lubrication x x
tightness of bolts x
general technical condition of bearing x
End bearing
Lubrication x x
general technical condition of bearing x
Impeller
allowance of impeller x
technial condition of impeller blades x
tightness of adjuster sleeve x
tightness of bolts x
technical condition of impeller mounting cone x
technical condition of impeller housing x
Main shaft
general technical condition x
condition of shaft sleeve (part no 23028) x
technical condition of jet flange x
tightness of intermediate shaft fastening bolts x x