Valve Spring: Testing and Inspection

VALVE SPRINGS INSPECTION





1. Using a steel square, measure the deviation of the valve spring.
Maximum deviation: 2.0 mm (0.079 inch)
If the deviation is greater than maximum, replace the valve spring.





2. Using vernier calipers, measure the free length of the valve spring.
Free length: 45.50 mm (1.7913 inch)
If the free length is not as specified, replace the valve spring.





3. Using a spring tester, measure the tension of the valve spring at the specified installed length.
Installed tension: 186 - 206 N (41.9 - 46.3 lbs.) at 33.8 mm (1.331 inch)
If the installed tension is not as specified, replace the valve spring.