Valve Spring: Testing and Inspection
VALVE SPRING INSPECTION
1. Measure the spring height using a spring tester.
- If it exceeds the specification, replace the valve spring.
Valve spring standard height 27.5 mm {1.08 in} (pressing force 262.8 N {26.80 kgf, 59.08 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 2.0° (3.45 mm {0.136 in})