Operation
and
Maintenance
Manual
for
WP2.1C/WP3.9C
Series
Marine
Diesel
19
B) Check the water level in the radiator. Refill if necessary. C) Check the fuel
level in fuel tank. Refill if necessary.
D) Check the tightness of mounting bolts of the engine and installing bolts of
components.
Tighten them if necessary.
E) Check the leakages of air, oil and water. Repair if necessary.
F) Eliminate all faults and abnormal conditions found in operation. G) Clean the
engine and accessories of oil sludge and dust.
H) Clean the air filter and air duct every day in dusty environment.
5.2 Maintenance at the Completion of Every 125 Working Hours
A) Complete all the procedures mentioned above.
B) Check the tension of the fan belt. Adjust it if necessary.
5.3 Maintenance at the Completion of Every 500 Working Hours
A) Clean away dust from the paper cartridge and dust chamber of the air cleaner.
B) Check the valve clearances and make adjustments if necessary
C) At the completion of every 250 working hours, replace oil filter cartridge.
D) At the completion of every 250 working hours, replace fuel filter cartridge.
E) Complete all the procedures mentioned above.
F) Check the seat lines of valves. Relap valves and readjust valve clearances if
necessary.
G) Check the fuel delivery advance angle. Readjust it if necessary.
H) Check the nozzle opening pressure and spray pattern. Readjust the injection
pressure.
I) Check the tightening torque of main bearing bolts and connecting rod bolts.
J) Check the leakage from the weep hole of the water pump. Replace the water
seal if the leaking rate is too high.
K) Clear the silencer of carbon deposits.
L) Check all cable connections in the electric system. Clean and tighten the
connections if dark burned spots are found.
