VALVE INSPECTION [WL-C, WE-C]

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1. Measure the valve head margin thickness of each valve. Replace the valve if necessary.

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Standard valve margin thickness

IN: 1.55—1.85 mm {0.061—0.072 in}

EX: 1.80—2.10 mm {0.070—0.082 in}

2. Measure the length of each valve. Replace the valve if necessary.

Standard valve length

IN: 111.65—112.25 mm {4.394—4.413 in}

EX: 111.6—112.2 mm {4.390—4.409 in}

Minimum valve length

IN: 111.50 mm {4.390 in}

EX: 111.45 mm {4.388 in}

3. Measure the stem diameter of each valve in the X and Y directions at the three points (A, B, and C) shown in the figure. Replace the valve if necessary.

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Standard valve stem diameter

IN: 5.970—5.985 mm {0.2350—0.2356 in}

EX: 5.965—5.980 mm {0.2348—0.2354 in}

Minimum valve stem diameter

IN: 5.920 mm {0.2330 in}

EX: 5.915 mm {0.2328 in}