Page 121 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

MODULE 6 : Engine Lubricating System

EXERCISE 6.1: Changing the engine oil

Objectives

At the end of this exercise you shall be able to
• drain the engine oil
• fill the engine oil to a specified level
• check the engine oil pressure at different r.p.m.

Requirements

Tools/Instruments Materials/Components
• Trainee’s tool kit - 1 No. • Tray - 1 No.
Equipments/Machines • Cotton waste/Banian cloth - as reqd.
• Kerosene - as reqd.
• Multicylinder diesel engine - 1 No. • Soap oil - as reqd.
• Lube oil as prescribed by
the manufacturer, Filter elements - as reqd.

Procedure

1 Start the engine and warm up till the operating temperature is Fig 1
achieved.
2 Stop the engine.
3 Unscrew the engine oil dipstick.
4 Check the level and condition of the oil (using a dip stick).
5 If engine oil colour changed into brown or black, sludge or
contaminated change engine oil and filter.
6 Unscrew the pan drain plug and drain oil completely.
7 Change the oil filter in the bowl (Fig 1). Ensure that the
washer and spring are fitted in correct position.
8 Check the drain plug gasket washer and replace it, if found
damaged.
9 Refill the engine oil with the correct grade of oil, as
recommended by the manufacturer.
10 While refilling, check the oil level by the dip stick till the oil
level reaches the upto level mark.

11 Refit the oil filling cap.
12 Start the engine and warm up.
13 Check the oil leak through the drain plug and filter; if a leak is found, rectify the leakage.
14 Stop the engine and check the oil level with the dip stick. If required Top - up oil till the oil level reaches the
maximum mark on the dip stick.
15 Start the engine and observe the oil pressure at the idling speed of 600 to 700 r.p.m., 1000 r.p.m., 1500 r.p.m.
and 2500 r.p.m. Observe the engine speed with the help of a tachometer and note down all the readings and
compare them with the manufacturer’s specifications.

104