WÄRTSILÄ Vasa R22, Инструкция по эксплуатации, Страница: 58 / 297

4 After overhauling,
the following instructions are espe-
cially important:
•
check pressure and temperature gauges,
•
check the automatic alarm and stop devices,
•
check the pressure drop over the fuel filter and lubricating
oil filter,
•
check the oil level in the oil sump/oil tank. Estimate the
condition of the oil,
•
check the ventilation of the engine circulating water system,
•
check the quantity of leak fuel,
•
check the gossip holes of the coolers,
•
check the content of additives in the circulating water,
•
check the cylinder pressures,
•
listen for jarring sounds,
•
check the crankcase pressure,
•
check the starting air pipes,
•
vent the filters.
03.7 Running-in
The running-in of a new engine must be performed according to
programme B in Fig 03-2. It is also recommended that running-in
procedure is performed after following maintenance jobs.
1 After piston overhaul, follow programme A in Fig 03-2, as
closely as possible. The piston rings have slided into new
positions and need time to refit. If the program cannot be
followed, do not load the engine fully for 4 h, at least.
2 After changing piston rings, pistons or cylinder liners,
after honing of cylinder liners, follow programme B in Fig 03-2,
as closely as possible.
If the program cannot be followed, do not load the engine
fully for 10 h, at least.
Avoid “running-in” at continuous and constant low load!
The important thing is to vary the load several times. The ring
groove will have a different tilting angle at each load stage, and
consequently the piston ring a different contact line to the cylinder
liner.
The running-in may be performed either on distillate or heavy
fuel, using the normal lubricating oil specified for the engine.
03 Start, Stop and Operation 22-9632
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