Cub-cadet Yanmar 3TNV72 User Manual download pdf (Page 41)

GENERAL SERVICE INFORMATION

4-6 TNV IDI Service Manual

Function of Major Engine Components

FUNCTION OF MAJOR ENGINE COMPONENTS

Component Function

Air Cleaner

The air cleaner prevents airborne contaminants from entering the

engine. Since the air cleaner is application specific, it must be

carefully selected by an application engineer. It is not part of the

basic engine package as shipped from the Yanmar factory. Periodic

replacement of the air cleaner filter element is necessary. See the

Periodic Maintenance Schedule on page 5-16 for the replacement

frequency.

Dynamo

The dynamo is driven by a V-belt which is powered by the

crankshaft V-pulley. The dynamo supplies electricity to the engine

systems and charges the battery while the engine is running.

Dipstick (Engine Oil)

The engine oil dipstick is used to determine the amount of engine

oil in the crankcase.

Electric Fuel Pump

The electric fuel pump 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. An electric fuel pump may

be installed as standard equipment based on engine model and

specification. If an electric fuel pump is installed, turn the key switch

to the ON position for 10 to 15 seconds to prime the fuel system.

Engine Oil Filter

The engine oil filter removes contaminants and sediments from the

engine oil. Periodic replacement of the engine oil filter is necessary.

See the Periodic Maintenance Schedule on page 5-16 for the

replacement frequency.

Fuel Filter

The fuel filter removes contaminants and sediments from the diesel

fuel. Periodic replacement of the fuel filter is necessary. See the

Periodic Maintenance Schedule on page 5-16 for the replacement

frequency. Please note that the word “diesel” is implied

throughout this manual when the word “fuel” is used.

Fuel Filter / Water Separator

The fuel filter / water separator removes contaminants, sediments

and water from diesel fuel going to the fuel filter. This is a required

component of the fuel system. This is standard equipment with

every engine. The separator is installed between the fuel tank and

the fuel pump. Periodically drain the water from the fuel filter / water

separator using the drain cock at the bottom of the separator.

Fuel Priming Lever

If the unit has a mechanical fuel pump, a fuel priming lever on the

mechanical fuel pump primes the fuel system. The fuel system

needs to be primed before you start the engine for the first time, if

you run out of fuel, or if fuel system service is performed. To prime

the fuel system, operate the fuel priming lever until the cup in the

fuel filter is full of fuel.

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Cub-cadet Yanmar 3TNV72 User Manual Page 41

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Cub-cadet Yanmar 3TNV72 User Manual Page 41

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