Operation and Maintenance Manual for WP2.1C/WP3.9C Series Marine Diesel
20
5.4 Maintenance at the Completion of Every 1000 Working Hours
A) Complete all the procedures mentioned above.
B) Replace air filter cartridge.
C) Clear the cooling system of scale.
D) Clean the fuel tank and fuel pipeline.
E) Check for technical conditions and performance of the engine to see if it needs
some repairing. Dismount and inspect relevant parts. Clear away carbon deposits
from cylinder head, piston, piston rings and cylinder liner. Check to see if the
piston rings, cylinder liner, crank pin bearing or main journal bearing are subject
to premature wearing.
5.5 Engine Preservation
If the engine is to be kept in store for a long period of time, it should be treated
beforehand in the following procedures.
A) Drain lubricating oil, cooling water and fuel oil from the engine when it is hot.
B) Dismount intake and exhaust manifolds. Through the inlet and exhaust ports in
the cylinder head, pour 200 grammes dehydrated lubricating oil into each cylinder.
Rotate the crankshaft to apply the oil to the piston, piston rings, cylinder liner and
valve seats.
C) Cover the openings on the engine to prevent foreign objects and moisture
from entering them.
D) Smear rust resisting oil on the unpainted surface of the engine.
E) Store the engine in a clean, dry place with good ventilation. The engine should
not be stored near chemicals.
F) Repeat the procedures from A to E for every six months during the engine
storage.
Section
Ⅵ
Trouble-shooting
6.1 Failure to Start
Possible Causes Suggested Remedies
(1) Fuel tank empty or fuel tank cock no
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