Systems and scheduled
maintenance
Solé, S.A. C-243 b, km 2 · 08760 Martorell (Barcelona) ·Tel. +34 93 775 14 00 · www.solediesel.com · [email protected]
38
Marine Diesel gensets. Operator’s Manual.
Maintenance task. Starter motor inspection
1.
Check if there is any impurity in pinion teeth.
2.
Make sure that the pinion shaft turns freely when turned in the
direction of driving (clockwise) and it is locked when turned in the
opposite direction. If not, replace the overrunning clutch.
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.
Item
Assembly Standard
V-belt deflection
10 - 12 mm
