Sole Diesel 100 GTA, Operator'S Manual

Page: 36 / 76

SCO 10 PANEL
36
Operator’s Manual Marine Diesel Gensets
Revision 2. 10/2017
MAINTENANCE TASK. ALTERNATOR BELT TENSION INSPECTION
Push the belt inward with thumb pressure exerted midway between
the pulleys, as shown, to check the belt tension (deflection). If the tension is
incorrect, loosen the adjusting bracket bolt and mounting bolt, and move
the alternator in or out.
An excessive tension may cause a quick wear of the belt and alternator bearings.
Otherwise, if the belt is excessively loose or has oil and insufficient load, it can cause the belt to
skid.
Never adjust the belt tension with genset running or battery connected.
MAINTENANCE TASK. BATTERY LEVEL
Battery requires a very careful handling and frequent checking. Proceed as shown below:
1. Keep battery dry and cleaned.
2. Check terminal cleanliness regularly. If dust is settled, terminals should be loosened,
cleaned and smeared with a neutral grease layer.
3. Metal objects must not be placed over the battery.
4.
Add distilled water if the level is out of range
.
5.9. Alternator
The maintenance and fault diagnostic procedures involve risks that may cause severe injury or
even death. These procedures should therefore be carried out solely by qualified electrical and
mechanical specialists. Before any maintenance and cleaning work make sure that there are no
live parts that the generator housing has cooled to ambient temperature, that the genset cannot
be accidentally started up and that all procedures are strictly observed.
.
MAINTENANCE TASK. CONTROL OF WINDINGS AND ELECTRICAL INSULATION
The condition of the windings can be checked by measuring their electrical resistance to
earth. While running this test, disconnect the voltage regulator. It is usually sufficient to control the
main winding.
The readings should give a measurement of the least 1MOhms. If the insulation resistance
is below this threshold, the alternator alone should be oven dried at 60 – 80ºC for 3 hours. Before
carrying out this operation remove the voltage regulator. As an alternative to oven drying hot air
at 60 – 80ºC can be blown through the alternator for at least 1 hour.
MAINTENANCE TASK. CONTROL OF BEARINGS
During maintenance control the condition of the bearing and check that no grease has
leaked: the lifespan of the bearings depends on the vibrations and axial strains they undergo
(vibrations can increase considerably with a bad alignment) and on the working conditions. So
check for any unusual signs: vibrations, unusual noises.
Item Assembly Standard
V-belt deflection
10 – 12 mm