Page 167 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

Oil pump is most important part of oil lubrication system because of it is main unit to which pressure create on
oil. It is drive by a timing gears. It is construction is simple, inside of these pump only two gears rotate inside. The
housing of a unit called drive gear which drive the cam shaft and another one is driven gear as shown in given
diagram.
Oil filter

Due to movement of engine some metal dust carbon or breathing system dust and dirt mix with lubricating oil. To
remove these dust from oil the oil filter is used. It is also main filtration unit in oil lubrication system. It may be full
flow system or by pass system. A full-flow system filters all of the oil, flow whereas a bypass system simply filters
some of it.
Oil strainer

A mesh or screen that stops big particle from blocking the oil pump by keeping them from entering the oil pump.
It is often fastened to the oil pickup tube or the oil sump. Oil strainer is first filter or starting filtration unit of oil
lubrication system.
Oil cooler plates
Due to the lots of frication inside of engine every time oil also absorb a heat from which to produce from an engine.
After absorbing of heat oil also start to highly boil these oil also need some cooling, for these cooling done by oil
cooler plates. A device that reduces oil temperature by dissipating heat into air or coolant. It serves as a safeguard
against engine overheating and oil deterioration. It comes both water-cooled and air-cooled varieties.

As water circulated in engine to suck heat similarly by circulating oil in engine becomes hot and viscosity decrease
so oil becomes then thus not lubricate the parts of engine so it is necessary to keep it cool. Some of the engines

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CITS : Automotive - Mechanic Diesel - Lesson 39 - 46