Page 164 - Mechanic Diesel - TT
P. 164
MECHANIC DIESEL - CITS
Importance of checking and setting correct oil pressure
Objectives: At the end of this lesson you shall be able to
• explain about the importance of checking and setting correct oil pressure
In this system all the oil passes through the filter before reaching the main oil gallery. One bypass valve is provided
in the filter which allows oil to reach the main oil gallery directly if the filter is choked.
Bypass oil filter system: In this system only a part of the engine oil enters the filter. After filtering, the oil goes to
the oil sump. The remaining oil goes directly to the main oil gallery.
Filter element: Filter elements are made of felt, cotton waste, cloth and paper. Oil filters are replaced after certain
kilometers of running of the engine as specified by the manufacturer.
Importance of Servicing the oil filter is
1 Cleanliness: The oil filter removes contaminants such as dirt, metal particles, and sludge from the engine
oil, ensuring that only clean oil circulates through the engine. This helps prevent wear and damage to engine
components.
2 Efficiency: A clean oil filter allows the engine oil to flow freely, ensuring proper lubrication of engine parts. This
helps maintain optimal engine performance and fuel efficiency.
3 Longevity: Regularly servicing the oil filter prolongs the life of the engine by reducing wear on critical
components. Clean oil also helps prevent corrosion and extends the lifespan of the engine.
4 Preventing Engine Damage: Contaminants in the oil can cause damage to engine components over time
if not filtered out. Servicing the oil filter helps prevent this damage, leading to a smoother and more reliable
engine operation.
Overall, regular servicing of the oil filter is essential for maintaining the health and performance of the engine, as
well as ensuring its longevity and reliability.
Importance of checking and setting correct oil pressure
Objectives: At the end of this lesson you shall be able to
• explain importance of checking oil pressure.
• demonstrate how to setting correct oil pressure.
1 To reduce friction in the contact surfaces of the parts so that the motion of the parts is maintained.
2 Forms a fine film or oil film on the surfaces of engine moving parts.
3 To prevent gases from leaking out, oil fills the spaces.
4 Works as a cooling agent by absorbing the heat of moving parts.
5 Cleans the part by flushing out dust, metal particles etc.
6 This oil film reduces the noise of parts colliding.
7 Reduces shocks on the surfaces of engine moving parts.
8 Do not drop the viscosity to the maximum heat limit.
9 Produce with less carbon.
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CITS : Automotive - Mechanic Diesel - Lesson 39 - 46 CITS : Automotive - Mechanic Diesel - Lesson 39 - 46
