VALVE, VALVE GUIDE INSPECTION

1. Measure the stem diameter of each valve in X and Y directions at the three points (A, B, and C) as indicated in the figure.

• If not as specified, replace the valve.

IN: 5.975-5.995 mm {0.2352-0.2360 in}

EX:5.950-5.970 mm {0.2343-0.2350 in}

2. Measure the inner diameter of each valve guide in X and Y directions at the three points (A, B, and C) as indicated in the figure.

3. Calculate the valve stem to guide clearance by subtracting the outer diameter of the valve stem from the inner diameter of the corresponding valve guide.

• If not as specified, replace the valve and/or the valve guide.

IN: 0.020-0.069 mm {0.0008-0.0027 in}

EX: 0.045-0.094 mm {0.0018-0.0037 in}