Page 36 - CTS - Mechanic Diesel - TP
P. 36
MECHANIC DIESEL - CITS
EXERCISE 2.3: Carry out cylinder leakage test
Objectives
At the end of this exercise you shall be able to
• clean the cylinder block and locate cracks distortion
• check cylinder block leakage.
Requirements
Tools/Instruments Materials/Components
• Trainee’s tool kit - 1 No. • Tray - 1 No.
• Scraper - 1 No. • Cotton cloth - as reqd.
• Kerosene - as reqd.
Equipments/Machines • Soap oil - as reqd.
• Engine cylinder block - 1 No. • Lube oil - as reqd.
• Multi cylinder diesel engine - 1 No. • Steel plate with rubber pad - as reqd.
• Air compressor, Water washer - 1 No. • Hot water - as reqd.
Procedure
TASK 1: Cleaning the cylinder block
1 Put the cylinder block on wooden blocks (Fig 1)
2 Clean cylinder block with suitable solvent or steam. Fig 1
3 Clean the oil passages of cylinder block with help of wire brush.
4 Remove all sludge of dirt and carbon deposits in crank case, cylinder
walls and valve chambers.
5 Remove carbon deposits in cylinder block.
6 Use scrapper to remove hard carbon deposits and take care with out
damage the highly finished surfaces.
7 Clean the cylinder block by using compressed air blast.
8 Visually check the cylinder block for cracks and damages.
9 Replace the cylinder block if any damage is found.
TASK 2: Descaling water passages of cylinder block
1 put the engine on two wooden block Fig 1
2 Clean the engine block with suitable solvent
3 Descale water passages by injecting water with suitable solvent
at high pressure.
4 Clean the cylinder block by using compressed air blast. (Fig 1)
5 Check engine block visually for cracks.
6 Fit steel plate (1) with rubber pads on cylinder block to close
water jackets opening and also fit side sealing plate.
7 Fit sealing plate (2) with adapter on the front face of the block
and connect rubber hose (4) to hand operated pump (3) dipped
in a container of hot water of 70oC to 80oC temperature.
8 Pump water in cylinder block at approximate 5kg./cm2 and
check cylinder block correctly for leakage.
9 If leakage found in cylinder block Repair/ replace it.
10 Clean the cylinder block oil gallery passages.
11 Clean the oil pipe lines of engine.
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