2.4 Major Service of Parts

2.PRODUCT EXPLANATION

2.4 Major Service of Parts

Name of part Function

Fuel filter Removes dirt and water from fuel. Drain the filter periodically. The element (filter) should be changed. See maintenance section 4.3.5 Fuel feed pump Pumps fuel from tank to the fuel injection pump. Priming lever Moving the priming lever up and down feeds the fuel. The priming lever is used to bleed air from the fuel system after running out of fuel. Filler port (engine) Filler port for engine lubricating oil. Filler port (marine gear) Filler port for marine gear lubricating oil.

Lubricating oil filter

Filters fine metal fragments and carbon from the lubricating oil. Filtered lubricating oil is distributed to the engine's moving parts.

Cooling System

There are two cooling systems: fresh water and seawater. The engine’s combustion heat is cooled by the fresh water/coolant in a closed circuit. The fresh water is cooled by seawater using heat exchanger. The seawater also cools the engine- and gear-oil (and depending on the model also intake air) through coolers in an open circuit. Fresh water pump The centrifugal water pump circulates fresh cooling wate water pump is driven by the V-belt. r inside the engine. The fresh Seawater pump Pumps seawater from outside the vessel to the engine by passing through the engine’s coolers. The seawater pump is belt driven and has a replaceable rubber impeller.

Fresh water/coolant filler cap

The filler cap on the coolant tank covers the water supply port. The cap has a pressure regulating valve. When the cooling water temperature rises the pressure rises inside the fresh water system.

Coolant recovery tank

The pressure regulating valve releases vapour and hot water overflows to the coolant recovery tank When the engine stops and cooling water cools, the pressure in the cooling water tank also drops very low. The filler cap valve then opens to send water back from the coolant recovery tank. This minimizes cooling water consumption. Fresh water/coolant level can easily be checked and refilled in this tank. Intake silencer The intake silencer guards against dirt in the air and reduces the noise of air intake. Nameplates Nameplates are provided on the engine serial number and other data. and the marine gear and have the model, Starter Starter motor for the engine. Powered by the battery. Alternator Rotated by belt drive, generates electricity and charges the battery.

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