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VALVE, VALVE GUIDE INSPECTION

BME011012111601

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

Minimum margin thickness

  IN: 0.8 mm {0.0315 in}
  EX: 1.0 mm {0.0394 in}

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

Standard length

  IN: 115.01-115.51 mm {4.528-4.547 in}
  EX: 114.35-114.85 mm {4.502-4.521 in}

Minimum length

  IN: 114.785 mm {4.519 in}
  EX: 114.125 mm {4.493 in}

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

Standard diameter

  IN: 5.970-5.985 mm {0.2351-0.2356 in}
  EX: 5.965-5.980 mm {0.2349-0.2354 in}

Minimum diameter

  IN: 5.920 mm {0.2331 in}
  EX: 5.915 mm {0.2329 in}

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

Standard inner diameter

  6.030-6.050 mm {0.2374-0.2381 in}

5. Measure the protrusion height (dimension A) of each valve guide without lower valve spring seat. Replace the valve guide if necessary.

Standard height

  IN: 18.7-19.2 mm {0.737-0.755 in}
  EX: 17.6-18.1 mm {0.693-0.712 in}