Page 92 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

EXERCISE 3.6: Checking the exhaust system in engine

running mode

Objectives

At the end of this exercise you shall be able to
• examine the exhaust system of an engine.

Requirements

Tools/Instruments Materials/Components

• Trainee’s tool kit - 1 No. • Kerosene - as reqd.
• Box spanner set - 1 No. • Soap water - as reqd.
• Safety glasses or goggle - 1 Set. • Cleaning cloth - as reqd.
• Emery sheet - as reqd.
Equipments/Machines
• Wire brush - as reqd.
• Diesel engine - 1 No. • Metal sealing compound - as reqd.
• Water sprayer - 1 No. • Pipe clamp - as reqd.
• Arc welding machine - 1 Set. • Bolts/ nuts - as reqd.
• Gasket/ Asbestos - as reqd.
Procedure

• Start the engine.
• Identify leak in between the engine head and exhaust manifold joint (Gasket).

• Confirm the leakage by spraying soap water on it.
• Stop the engine and allow to cool
• Remove and clean the surface and studs with the help of wire brush and emery paper.
• Place a new gasket, align and tighten it with recommended torque.
• Restart the engine and check the leakage.

• Identify leaks by loose connection between muffler and tail pipe.
• Dismantle the fittings, remove carbon, rust and clean it.
• Apply metal sealing compound in between sleeve.
• Join the tail pipe and properly tighten it.

• Restart the engine and check its smooth running without noise.
• Ensure, there is no exhaust gas leaks in the exhaust system.

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