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VALVE SPRING INSPECTION

B3E011012125201

1. Apply pressing force to the pressure spring and inspect the spring height.

  • If it is less than the specification, replace the valve spring.

Pressing force

  390 N {39.76 kgf, 87.67 lbf}

Standard height

  28.68 mm {1.129 in}

2. Measure the out-of-square of the valve spring, using a square, as shown in the figure.

  (1) Rotate the valve spring one full turn and measure "A" at the point where the gap is the largest.

  • If it exceeds the specification, replace the valve spring.

Valve spring maximum out-of-square

  1° (2.10 mm {0.0826 in})