Operation
and
Maintenance
Manual
for
WP2.1C/WP3.9C
Series
Marine
Diesel
8
2.3.4 Turn the crankshaft for several revolutions to check whether the movable
parts move smoothly without interference.
2.3.5 Check the battery and wiring in the electric system.
2.3.6 Bleed the fuel supply system in the following procedure:
(1) Slacken the venting screw on the fuel filter. Actuate the handle of the
prime pump to bleed the fuel filter and pipes. And then retighten the venting screw.
(2) Slacken the venting screw on the injection pump. Bleed the fuel injection
pump by actuating the handle of prime pump until no air bubbles can be found in the
outflowing fuel. Retighten the venting screw.
(3) Slacken the union nuts connecting the injectors and high pressure fuel
pipes. Turn the speed control lever of the governor to its halfway position. Crank the
engine by means of the starting motor until fuel flows out from the joints. Then
retighten the union nuts.
2.4 Starting the Engine
Before starting check to see that the prime pump handle resists hand operation
and that a puffing sound of injector can be heard when engine is cranked. If not, bleed
the fuel system again.
Turn the speed control lever halfway and set the starting switch to the “start”
position to start the engine. In cold weather, open the drain cock on the cylinder block
and refill the cooling system with hot water until drain water temperature is over 30 .
℃
Then start the engine in the procedure described above.
It is not allowed to run the starting motor continuously for more than ten seconds.
If the engine fails to start up, wait for two minutes before making another attempt. It
is necessary to check over the engine if it fails to start up for three times in succession.
After starting up, let the engine run at about 800 r/min for several minutes. Do not
load the engine until the lubricating oil pressure is in the normal range. Running at
rated speed and full load is not allowed until the outlet cooling water temperature
reaches 60 . During operation, pay close attention to the indications of meters
℃
especially that for lubricating oil pressure.
Before stopping the engine, reduce the load and speed gradually. Stop the engine
by pulling the engine stop lever after the engine has been run at idle speed for several
minutes. In case of engine running away choke the intake pipe to stop the engine.
If the ambient temperature falls below 0 and the engine is not to be run for a
℃
long time, drain the cooling water from the engine and radiator to prevent frost
