z Inspect the scratch and wear of valve stem seal contacting face, and if necessary correct with the grinding paper but if severe replace it. z If valve head thickness (H) H becomes less than 1.6 mm for intake and 1.3 mm for exhaust, replace the valve. EFM2037I b) Valve guide z Insert the valve into valve guide and measure the clearance between valve and valve guide by the shaking degree of valve. If the clearance is bigger, measure the Measuring position valve and then replace the more worn valve guide. z If the valve guide has already been replaced, measure the EA0M4052 center with valve seat if it deviates or not and if abnormal it must be corrected.
(Simultaneously be processed when in guide reamer process.) c) Valve seat z Inspect the damage and wear of valve seat and if necessary replace. z Valve seat thickness and angle. Assemble the valves at the cylinder head and using the measuring instrument from the lower face, measure the projection amount of valve. If the measured value is more than the use limit, replace the valve seat. Inspection - 65 - Valve Standard Limit Intake 2.6 ~ 3.0 mm 1.6 mm Exhaust 1.9 ~ 2.3 mm 1.3 mm Valve Standard Limit Intake 0.020 ~ 0.049 mm 0.20 mm Exhaust 0.045 ~ 0.074 mm 0.25 mm