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Fig. 191: Checking Valve Face Angle d Check the valve head margin thickness Standard margin thickness: 1.0 mm (0.0394 in.) Minimum margin thickness: 0.5 mm (0.0197 in.) If the margin thickness is less than the minimum, replace the valve Fig. 192: Identifying Valve Head Margin Thickness e Check the valve overall length Standard overall length: 95.10 mm (3.744 in.) Minimum overall length: 94.60 mm (3.724 in.) If the overall length is less than the minimum, replace the valve Fig. 193: Identifying Valve Overall Length f Check the surface of the valve stem tip for wear If the valve stem tip is worn, resurface the tip with a grinder or replace the valve
2009 Toyota Tundra 2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra
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