Yanmar 6LPA-STZP2 Dokumentacja Strona 20

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PRODUCT OVERVIEW
14 6LPA Series Operation Manual
FUNCTION OF MAJOR COMPONENTS
Name of Component Function
Fuel Filter Removes dirt and water from the fuel. The filter is a cartridge type, and the inner
element should be replaced before clogging occurs. A water separator is on the
bottom of the filter and should be drained periodically.
Fuel Feed Pump A mechanical pump that pumps fuel from the tank to the fuel injection pump. It is
built in to the fuel injection pump.
Fuel Bleed Pump This is a manual fuel pump. Pushing the knob on the top of the fuel filter feeds
the fuel. The pump is also used to bleed air from the fuel system.
Engine Oil Filler Port Filler port for engine oil.
Engine Oil Filter Filters fine metal fragments and carbon from the engine oil. Filtered engine oil is
distributed to the engine’s moving parts. The filter is a cartridge type and should
be replaced periodically.
Engine Oil Dipstick Gauge stick for checking the engine oil level.
Marine Gear Oil Filler Port (If
Equipped)
Filler port for marine gear lube oil. Located on top of the marine gear case.
Cooling System There are two cooling systems: coolant and seawater.
• Coolant Tank
• Heat Exchanger
• Coolant Pump
The tank stores the coolant and is connected to the heat exchanger. Cooling
seawater passes through the heat exchanger to cool the coolant by heat
exchange. After cooling, the coolant is fed by the coolant pump to the inside of
the engine, around the combustion chamber, turbocharger and then returned to
the tank.
Filler Cap Located on the top of the coolant tank. It has two pressure regulating valves
(release and retraction valves). When the coolant temperature rises, the
pressure inside the coolant tank increases causing the release valve in the filler
cap to open.
Reservoir Hot water and steam pass through a rubber hose to the reservoir for cooling. (The
filler port and the reservoir are connected by a rubber hose.) When the load is
reduced and the coolant temperature falls, the pressure in the coolant tank is
lowered, activating the retraction valve in the filler cap. This causes the coolant
in the reservoir to return to the coolant tank. This process reduces the
consumption of coolant.
Turbocharger A 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 pressurizes the
intake air for sending to the cylinder.
Charge air cooler This heat exchanger cools the pressurized charging air from the turbocharger
with water.
Zinc Anode The metal area of the seawater cooling system is prone to galvanic corrosion.
The zinc anode is installed in the various coolers to prevent this. When the zinc
anode becomes worn, components in the fresh water cooler, oil cooler, etc. will
corrode. Periodic replacement of the zinc anode is necessary.
Nameplates Nameplates are provided on the engine and have the model, serial number and
other data.
Starter A DC motor for starting the engine. Electric current causes the pinion gear to
engage with the ring gear on the flywheel to start the engine.
Alternator This generator rotates by a V-belt drive to charge the battery during operation.
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