MAINTENANCE
EN / M-SQ20 / 25 / November 2010
25
4.3 Regular
maintenance
CHECK DAILY:
•
Oil level
Take care the oil level is never below the mark. Do not add
oil when the level is still above the mark.
1 Max. oil level;
2 Min. oil level.
Fig. 23. Engine oil dipstick markings
•
Level cooling liquid
•
Hoses for loose connections or deterioration.
•
Water inlet filter.
•
V-belt
tension
AFTER FIRST 50 HOURS:
•
Change oil and replace the oil filter.
Have the engine run until it is on temperature and
stop it. Replace the filter. 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 air vent (siphon breaker valve) 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 and readjust V-belt.
•
Check the electrical connections
EVERY 150 HOURS:
•
Change oil.
•
Check the battery acid level (not for
WhisperPower batteries).
•
Check battery terminals for corrosion
•
Check and readjust V-belt
•
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.
EVERY 300 HOURS:
•
Replace the impeller of the raw water pump.
•
Retighten the cylinder head bolts and adjust the
valve clearance. (See paragraph 5.4.2).
•
Check air cleaner element.
•
Replace the oil filter.
•
Replace the fuel filter
Replacement depends or the condition of the
fuel. We recommend replacement every 300
hours.
EVERY 1000 HOURS:
•
Replace the V-belt.
•
Retighten cylinder head bolts/ check and
adjust valve clearance.
EVERY 2000 HOURS:
•
Check lubricating oil pressure
•
Clean and check or replace fuel injector nozzles
and check injection pressure.
•
Check the air cleaner element:
The air is taken from the section between the
alternator and the engine
•
Check the cooling system:
The engine cooling liquid is indirectly cooled by
raw water via a heat exchanger. The seawater is
pumped by the PTO driven impeller pump. All
parts of the cooling system are of corrosion free
and seawater resistant materials such as naval
brass and copper/nickel. In case of gathering of
dirt in the system it could be cleaned by
compressed air. When overhauling the engine
one could clean the parts thoroughly or replace.
When the generator set runs less than 150 hours a year
the oil should be changed yearly
