OM-C3 11/21
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SP2. Check coolant level
The cooling water in the engine reaches
extremely high temperatures. You must use
extreme caution when working on hot
engines to avoid burns. Allow the engine
to cool before working on the cooling system
Open the filler cap carefully, using
protective clothing when the engine is warm.
Remove the pressure cap from the expansion tank and
check water level. In order to give the coolant an
opportunity to expand, the level should be about 1 3/4 in.
(4-5 cm) below the filler cap sealing surface when the
engine is cold. When filling with coolant, the venting cock
on top of the turbocharger (for engines fitted with
turbocharger) should be opened to ensure that no air
pockets form in the cooling system.
SP3. Check seawater strainer
IMPORTANT:
A restricted or clogged sea water strainer
will result in hotter than normal (or overheated) engine
coolant and marine gear oil temperatures.
The sea water strainer should be checked daily and
cleaned as required, depending upon the operating
environment.
SP4. Check air cleaner and restriction indicator
If equipped with air intake restriction indicator gauge
(A), check gauge to determine if air cleaner needs to be
serviced. The reset button will pop up when air cleaner
needs to be serviced.
IMPORTANT:
Maximum air intake restriction is 625
mm (25 in. H2O). A clogged air cleaner element will
cause excessive intake restriction and a reduced air supply
to the engine.
Service and Maintenance - Daily
!
CAUTION
Seawater strainer
Air cleaner
A- Air intake restriction gauge
