MAINTENANCE
20
May 2006
/ WHISPER 3,5 / EN
4.2.4
Replacing fuel filter
Filter change depends on contamination of the fuel, but
should be done however, at least every 1000 running
hours. Before changing the filter, clamp off the supply line.
Remove the hoses from filter and attach them on the new
filter again. The arrow on the filter housing indicates the
direction of the flow. A clogged filter results in a lack of
output of the generating set.
4.2.5
Cleaning oil strainer
The oil strainer is behind a plug on the bottom of the
engine. In the strainer is a magnet to catch the metal parts
which are in the lubricating oil. Once per 1000 hours or
when the oil is contaminated one can clean the strainer by
washing it with petrol or a solvent. A green rubber plug in
the capsule gives access to the strainer. Before taking out
the plug one should sump the oil. Use tissues to avoid
spilling oil in the capsule.
4.3
REGULAR MAINTENANCE
CHECK DAILY:
•
Oil level (see fig. 13) Take care the oil level is
never below the mark.
•
Hoses for loose connections or deterioration.
•
Water inlet filter.
1 Filling
cap
2
Minimum oil level
3
Maximum oil level
Fig. 13:
AFTER FIRST 50 HOURS:
•
Change
oil.
Have the engine run until it is on temperature and
stop it. Drain oil by the sump pump into a suitable
retainer and fill up with fresh oil. Start the engine
again and have it run for 5 minutes. Stop the
engine again and pause for a few minutes to let
the oil gather in the crankcase. Check the level
again and add oil when necessary.
•
Check and tighten nuts, bolts, and unions, paying
particular attention to the fuel system.
•
Check the valve clearance.
•
Observe the exhaust at the normal full load. The
exhaust must be free from soot. Do not allow the
engine to run with a dirty exhaust without
investigating the cause as this may result in an
expensive breakdown.
•
Check siphon breaker valve or air vent on a
regular basis. When the air vent it not working
properly the engine can fill up with water by
siphoning. Water in the combustion chamber
causes serious damage to the engine.
EVERY 150 HOURS:
•
Change
oil.
•
Check the battery acid level.
•
Check battery terminals for corrosion
•
Check impeller raw water pump (durability
depends on the purity of the sea water. In sandy
water and warm water wear will increase). When
replacing the impeller the gasket between the
pump case and the cover should be replaced as
well. So when ordering a spare impeller order a
gasket as well.
Remove the cover to get access to the impeller.
Remove the old impeller with the help of two
screwdrivers. Install the new impeller and add
some grease. Turn the blades in the direction of
rotation of the pump i.e. anti clockwise looking at
the impeller.
EVERY 300 HOURS:
•
Replace the impeller of the raw water pump.
•
Check valve clearance.