Page 51 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

• Check the condition of the threads of the adjusting screw for wear, if necessary replace.

• Check the rocker arm bush and drill holes.
• Check the rocker arm ball pins for wear and damage
• Check the push-rod for bend and the socket end for wear
• Check the valve stem for bend, using a ‘V’ block and dial gauge

• Check the collar and stem end for damage.
• Oil the valve stem.
• Insert the valve in the valve guide.
• Support the valve head, so that it is held firmly on its seat.
• Fit the valve spring washer on the cylinder head.

• Insert the valve spring.
• Place the valve spring retainer over the spring.
• Compress the valve spring with the special tool
• Insert cotters with the smaller dia. at the bottom and release pressure on the valve springs (1) gradually
(Fig 2).
• Slightly tap the valve stem (1) with a mallet (5) to ensure that the cotters (2) have locked the valves and spring
retainers (4) take care that the two halves of the cotters are centrally located. (Fig 2)

Fig 2

• Fit the circlip/lock screw at both ends of the rods shaft
• Loosen the ball pins / nuts to ensure that the push-rods do not bend while tightening the rocker shaft support
brackets nuts/bolts on the cylinder head.
• Fit the rocker arm shaft assembly in the correct position on the cylinder head.
• Tighten the rocker arm shaft support bracket nuts or bolt to the specified torque (Use torque wrench)

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CITS : Automotive - Mechanic Diesel - Exercise 2.13