Page 195 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

Trouble shooting in cooling system and its components

Objectives: At the end of this lesson you shall be able to
• demonstrate Trouble shooting in cooling system and its components.

Reason.
i Not pouring water into the radiator for a long time.
ii Leakage from the radiator core.
iii Loose or damaged inlet or outlet hose pipe.

iv Head gasket broken.
v Leaking water drain plug.
vi Leaking of water from water pump.
i Lack of water in the radiator
ii Thermostat valve remaining closed.
iii Water pump being faulty.
iv Fan belt broken.
v Blockage of water passages in the radiator.
vi Rusting of water jackets.
vii Incorrect valve timing or ignition timing.
viii Pre-ignition defect.
ix Clogged (choked) exhaust manifold.
x silencer closure.
xi Brake and clutch being faulty.
xii Engine jamming.
Treatment.
i Fill the radiator with water.
ii Get the core soldering done.
iii Tighten or replace the hose pipe.
iv Replace the head gasket.
v Tighten or repair the drain plug.
Check and repair the water pump.
Remedies for cooling system.
i Replace the thermostat valve. If needed
iii Repair the water pump. If needed
iv Insert new fan belt. If needed
v Clean the radiator.
vi Clean the water jacket with water pressure.

vii set the right timing.
vii Remove the defects.
ix Clean the manifold.
x Clean the silencer.
xi Remove the defects.
xii Correct the engine.

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CITS : Automotive - Mechanic Diesel - Lesson 47 - 56