Function Of Major Engine Components - Yanmar L48N Operation Manual

PRODUCT OVERVIEW

FUNCTION OF MAJOR ENGINE COMPONENTS

Components
Air Cleaner
Dynamo (Optional)
Electric Fuel Pump (Optional)
Engine Oil Filter
Fuel Filters
Fuel Tank
Oil Cap / Dipstick (Engine Oil)
Side Filler Ports
(Engine Oil)
Starter Motor (Optional)
16
The air cleaner prevents airborne contaminants from entering the
engine. Periodic replacement of the air cleaner filter element is
necessary. See the Periodic Maintenance Schedule on page 59 for
the replacement frequency.
If the engine is equipped with the electric starting option, a dynamo
is located between engine body and flywheel. The dynamo supplies
electricity to the engine systems and charges the battery while the
engine is running.
The electric fuel pump (if equipped) makes sure there is a constant
supply of diesel fuel to the fuel injection pump. The electric fuel
pump is electro-magnetic and runs on 12 VDC.
The engine oil filter removes contaminants and sediments from the
engine oil. Periodic cleaning of the oil filter is necessary. See the
Periodic Maintenance Schedule on page 59 for the frequency of
cleaning.
Two fuel filters are provided to remove contaminants and
sediments from the diesel fuel. The inlet fuel screen is located
inside the fuel tank filler port. Since it uses a mesh construction, it
can be cleaned. The outlet fuel filter is a replaceable cartridge that
is located at the outlet of the fuel tank. Periodic cleaning /
replacement is required. See Periodic Maintenance Schedule on
page 59.
The fuel tank is a reservoir that holds diesel fuel. When fuel leaves
the fuel tank it goes to the fuel injection pump. Since fuel is used to
keep fuel system components cool and lubricated, more fuel than is
necessary for combustion enters the fuel system. Any fuel that is
not used for combustion is returned to the fuel tank. The fuel tank is
a required engine component.
The engine oil cap / dipstick combines the oil cap and dipstick in
one assembly. The dipstick part of the assembly is used to
determine the amount of engine oil in the crankcase.
You can fill the crankcase with engine oil from either side of the
engine depending upon which one is most convenient.
If the engine is equipped with the electric starting option, the starter
motor is powered by the battery. When you turn the key switch in
the operator's console to the START position, the starter motor
engages with the ring gear installed on the flywheel and starts the
flywheel in motion.
Functions
L-N Operation Manual