Valve Inspection

VALVE INSPECTION





1. Measure the valve head margin thickness of each valve.
^ If the valve margin thickness is not as specified, replace the valve.
Margin thickness
IN: 0.9 mm (0.035 inch) min.
EX: 1.0 mm (0.039 inch) min.
2. Measure the length of each valve.
^ If the valve length is not as specified, replace the valve.
Standard length
IN: 101.71 - 102.31 mm (4.0044 - 4.0279 inch)
EX: 101.71 - 102.31 mm (4.0044 - 4.0279 inch)
Minimum length
IN: 101.61 mm (4.0004 inch)
EX: 101.61 mm (4.0004 inch)





3. Measure the stem diameter of each valve in X and Y directions at the three points (A, B, and C) shown. If the stem diameter is not as specified, replace the valve.
Standard diameter
IN: 5.970 - 5.985 mm (0.2351 - 0.2356 inch)
EX: 5.965 - 5.980 mm (0.2349 - 0.2354 inch)
Minimum diameter
IN: 6.920 mm (0.2331 inch)
EX: 5.915 mm (0.2329 inch)