Valve Spring: Testing and Inspection

VALVE SPRING INSPECTION
1. Measure the valve spring height using the spring tester.





^ If it is not within the specification, replace the valve spring.

Valve spring installation height
37.90 mm (1.492 in) (171.5 N (17.49 kgf, 38.55 lbf))

2. Measure the amount of off-square on the valve spring using a square.
1) Rotate the valve spring one full turn and measure A at the point where the gap is the largest.





^ If it exceeds the maximum specification, replace the valve spring.

Maximum valve spring off-square
2.55 mm (0.100 in)