b) Distortion at the lower face z Measure the amount of distortion (t) using a straight edge and a feeler gauge at six positions as shown in the right figure. A B C D E F EA3M2031 z If the measured value exceeds the standard value, retrace the head with grinding paper of fine grain size to correct such defects. z If the measured value exceeds the maximum allowable limit, replace the cylinder head. EA6M2002 3) Inspection and measurement of valve and valve guide a) Valve z After cleaning the valves with clean diesel oil, measure the valve stem's outside diameter at upper, middle, and lower to determine the wears and when the wear limit is more than 0.15mm, replace the Stem tip valves.
EFM2036I Inspection - 64 - Warpage Standard Limit 0.05 mm or less 0.2 mm Thickness : t (reference) 113.9 ~ 114.0 mm 112.9 mm Valve Standard Limit Intake 11.969 ~ 11.980 mm 12.130 mm Exhaust 11.944~ 11.955 mm 12.105 mm