Valve Spring Inspection

VALVE SPRING INSPECTION





1. 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 pressing force 390 N (39.76 kgf, 87.67 lbf)
Valve spring standard height H 28.68 mm (11.1129 in)





2. Measure the out-of-square of the valve spring, using a square, as shown in the figure.
(1) 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.
Valve spring out-of-square (Maximum) 1.95 mm (0.0767 in)