Valve Spring Inspection
- Apply pressing force to the pressure spring and inspect the spring height.
- If it is less than the specification, replace the valve spring.
Valve spring installation height
28.68 mm {1.129 in} (390 N {39.8 kgf, 87.7 lbf})
- Measure the out-of-square of the valve spring, using a square, as shown in the figure.
- 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.
Maximum valve spring off-square
3.41 mm {0.134} (2°)
- Rotate the valve spring one full turn and measure "A" at the point where the gap is the largest.