Page 194 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

Importance of testing of pressure cap
It is imperative to test the pressure cap of a system, such as a vehicle’s cooling system, for various reasons:
1 Safety concerns - The pressure cap plays a crucial role in maintaining the optimal pressure levels within the
system. Testing is essential to verify that the cap can withstand this pressure without any leaks or failures, thus
ensuring safety, preventing accidents, and safeguarding the system and the vehicle from potential damage.

2 Enhanced system performance - A properly functioning pressure cap is essential for ensuring that the
system operates at the correct pressure levels. This is particularly important in a vehicle’s cooling system to
facilitate efficient cooling, prevent overheating, and uphold optimal performance.

3 Damage prevention - Failure or improper functioning of the pressure cap can result in damage to various
components within the system, including hoses, radiators, and the engine. Regular testing aids in early
detection of issues, thereby averting costly repairs or replacements.
4 Ensuring durability - Testing the durability of the pressure cap is crucial to ascertain its ability to withstand
pressure fluctuations and temperature variations during normal operation. This aspect contributes to the
longevity of the system and diminishes the likelihood of unexpected failures
5 Regulatory compliance - In numerous instances, particularly in automotive settings, testing the pressure
cap is a mandatory requirement to comply with safety and performance standards established by regulatory
bodies like the Department of Transportation (DOT) or industry standards organizations.
In conclusion, testing the pressure cap is indispensable for upholding safety, system performance, durability, and
adherence to regulatory standards.

Importance of servicing radiator

Objectives: At the end of this lesson you shall be able to

• demonstrate importance of servicing radiator.

A device that absorbs the heat of water and cools it is called a “Radiator” or ‘Water Heat Condenser’. A radiator is
a type of water tank to supply water to the engine. The radiator is fitted in front of the engine.
Why it is Important to servicing the radiator is as follows.

1 To remove old coolant from the radiator and prevent blockages
2 If the radiator is choked or damaged, many problems can arise in the engine.
3 If the radiator is damaged, broken or the radiator fan is not properly sized If not running, the heat generated in
the engine will go out properly therefore.

4 If the heat in the engine does not escape through the coolant, the engine will overheat
5 If the coolant is not supplied properly in the engine, the amount of overheating increases
6 To check radiator leakage
7 Having a water jacket choke up between cylinder block and cylinder head
8 Water in the cooling system may be damaged due to corrosion etc.

9 Having a radiator tube and fins choke up

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CITS : Automotive - Mechanic Diesel - Lesson 47 - 56 CITS : Automotive - Mechanic Diesel - Lesson 47 - 56