Measure the length of the valve spring. If the measurement is less than the allowable limit, replace the spring [Figure 60-80-32].
Put the spring on a flat surface, place a square on the side of the spring [Figure 60-80-32].
Rotate the spring and measure the maximum tilt. If the measurement exceeds the allowable limit, replace the spring.
Put the spring on a tester and compress to specified length [Figure 60-80-33].
Read the compressed load on the gauge. If the measurement exceeds the allowable limit, replace the spring.
