Valve springs — check

Basic data for checking the outer valve spring

Basic data for checking the internal valve spring

Lever Spring Test Diagram

1. Make sure that there are no cracks on the springs and that the elasticity of the springs has not decreased, for which check the deformation of the springs under load (pic. Basic data for checking the outer valve spring, fig. Basic data for checking the internal valve spring, fig. Lever Spring Test Diagram).

2. For lever springs (see fig. Lever Spring Test Diagram) size A (free spring) should be 35 mm, and dimension B under load 51–73.5 N (5.2–7.5 kgf) - 43 mm.