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6A – 78 ENGINE MECHANICAL
7. After grinding, make sure that the hot plug surfaces are completely free of protuberances.
Heat Shield Replacement Heat Shield Removal After removing the hot plugs, use a hammer Q and a brass bar R to lightly tap the lower side of the heat shield S and drive it free.
Heat Shield Installation Install the heat shield to the cylinder head from the nozzle
VALVE GUIDE Valve Stem and Valve Guide Clearance Measuring Method-I 1. With the valve stem inserted in the valve guide, set the dial indicator needle to “0”. 2. Move the valve head from side to side. Read the dial indicator. Valve Stem Clearance mm (in) Standard Limit Intake Valve 0.039 – 0.069 (0.0015 – 0.0027) 0.200 (0.008) Exhaust Valve 0.064 – 0.093 (0.0025 – 0.0037) 0.250 (0.0098)
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