Technical information

MAINTENANCE
22 May 2010 / M-SC3.5 / EN
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
See operation manual of the remote control panel to reset
the maintenance time counter after regular maintenance
(except daily checks) was carried out.
CHECK DAILY:
• Oil level (see figure 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.
Figure 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;
• 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.
• Check the electrical connections.
EVERY 150 HOURS:
• Change oil;
• Check the battery acid level (not applicable when
Whisper Power batteries are used);
• 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. clockwise looking at
the impeller.
EVERY 300 HOURS:
• Replace the impeller of the raw water pump.
• Check valve clearance.
EVERY 1000 HOURS:
• Replace the fuel filter.
Replacement depends on the condition of the
fuel. We recommend replacement every 1000
hours. Isolate the fuel supply and change the
element.
• Clean the oil strainer.
EVERY 2000 HOURS:
• Check lubricating oil pressure.
• Clean and check or replace fuel injector nozzles
and check injection pressure.
• Check the air filter element.
The air is taken in via the cover on the alternator.
Below this cover is a spongy material which filters
the air and holds some electrical components
which are cooled by the inlet air. This filter does
not require regular maintenance. Only in very
dusty circumstances this filter should be cleaned.
The spongy material can be washed in solvent or
replaced.
• Check the cooling system.
The engine oil is indirectly cooled by raw water
via an oil cooler/ heat exchanger. The alternator