Major Servicing Parts - Yanmar 6LPA-DTP Operación Manual

2.4 Major Servicing Parts

Name of part
Fuel filter
Fuel feed pump
Fuel priming pump
Filler cap (engine oil)
Dipstick (engine oil)
Lube oil filter
【Cooling Water System】
◎Fresh water tank
◎Fresh water cooler
◎Cooling water pump
◎Filler cap
◎Subtank
Oil cooler
Turbocharger
Inter-cooler
Anti corrosive zinc
Name plate
Starter
Alternator
Removes dust and water from fuel. The filter is a cartridge type, and the inner ele-
ment should be replaced before clogging occurs.
A water separator is on the bottom of the filter and should be drained periodically.
This is a mechanical pump used to feed fuel to the fuel injection pump. It is built
into the fuel injection pump.
This is a manual fuel pump. Moving the knob on the top of the fuel filter feeds the
fuel. The pump is also used to bleed air from the fuel system.
Filler port for engine lube oil.
Gauge stick for determining the level of the engine oil.
Filters fine metal fragments and carbon from the lube oil. The filter is a cartridge
type, and the inner paper element should be replaced before clogging occurs.
There are two types of cooling systems: seawater and fresh water.
This tank stores the fresh cooling water and is connected to the fresh water cooler.
Cooling seawater passes through the fresh water cooler to cool the fresh water by
heat exchange. After cooling, the cooled fresh water is fed by the cooling water
pump to the inside of the engine, around the combustion room, turbocharger, and
then returned to the tank.
Located on top of the fresh water tank the filler cap closes the filler port.
It has two pressure regulating valves (release valve and retraction valve).
When the cooling water temperature rises, the pressure inside the fresh water tank
increases causing the release valve in the filler cap to open.
Hot water and steam pass through a rubber hose to the subtank for cooling.
(The filler port and the subtank are connected by a rubber hose.)
When the load is reduced and the cooling water temperature falls, the pressure in
the fresh water tank is lowered, and this activates the retraction valve in the filler
cap causing the cool water in the subtank to return to the fresh water tank.
This process reduces the consumption of cooling water.
This heat exchanger cools the engine oil with fresh water or seawater, cooling system.
6LPA-DTP/-DTZP：multi-plate type (fresh water cooling)
6LPA-STP/-STZP：multi-plate type (fresh water cooling)
＋ multi-tube type (seawater cooling )
The pressurized intake air feeding device: the exhaust gas turbine is rotated by
the exhaust gas, and the power is used to rotate the blower.
This pressurises the intake air for sending to the cylinder.
This heat exchanger cools the pressurized intake air from the turbocharger with
seawater.
The metal area of the seawater cooling system is prone to electrical corrosion.
The anti corrosive zinc is installed in the oil cooler and the fresh water cooler to
prevent this. When the anti corrosive zinc becomes worn, parts in the fresh water
cooler and oil cooler, etc, will corrode.
Periodic replacement of the anti corrosive zinc is necessary.
Name plates are provided on the engine and have the model, serial number and
other data.
This is a DC motor for electrical starting. Electric current causes the pinion gear to
engage with the ring gear on the flywheel to start the engine.
This is a generator which rotates by V-belt drive to charge the battery during
operation.
Function
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