Page 54 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

EXERCISE 2.15: Refit the cylinder head, manifolds and

adjusting valve tappet clearance

Objectives

At the end of this exercise you shall be able to
• adjust the valve tappet clearance in a 4-cylinder engine
• assemble the cylinder head assembly
• start the engine after adjustments.

Requirements

Tools/Instruments Equipments/Machines

• Trainee’s tool kit - 1 No. • 4-cylinder engine - 1 No.
• Feeler gauge - 1 No. • Torque wrench - 1 No.
• Screw driver - 1 No. Materials/Components
• Ring spanner - 1 No.
• Bolts/Nuts - as reqd.
• Lock-nut - as reqd.

Procedure

• Fit the inlet and exhaust manifold with cylinder head place the cylinder head on the engine block with head
gasket. Tighten all the cylinder head bolts/nuts in correct sequence to the specified torque (use a torque
wrench - refer to service manual). Fig 1
• 4-cylinder engine’s cylinder head is shown in Fig 2 and torque wrench is shown in (Fig 1).
• Assemble and fit the rocker arm assembly. Turn the crank shaft in the clockwise direction and coincide the
flywheels TDC 1/6 or 1/4 mark with the flywheel housings pointer. Ensure that the 1st cylinder is in compression
stroke.
• Hold firmly the tappet adjusting screw with a good screwdriver. (Fig 3)

Fig 1

Fig 3

Fig 2

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CITS : Automotive - Mechanic Diesel - Exercise 2.14