VALVE SPRING INSPECTION
VALVE SPRING INSPECTION
SM2841602
id011000501400
-
Caution
-
• The valve springs differ depending on the IN and EX sides.Therefore, verify the free length or identification paint beforehand and inspect the valve springs.
bpe5ue00000044
1.Measure the valve spring height using the spring tester.
bpe5ue00000041
|
-
• If it is not within the specification, replace the valve spring.
-
Valve spring installation height [Type A]
-
When pressurized with spring force of 228—252 N {23.3—25.6 kgf, 51.3—56.6 lbf}, spring height is 38.0 mm {1.50 in}
-
Valve spring installation height [Type B]
-
IN: When pressurized with spring force of 195—215 N {19.9—21.9 kgf, 43.9—48.3 lbf}, spring height is 38.0 mm {1.50 in}EX: When pressurized with spring force of 228—252 N {23.3—25.6 kgf, 51.3—56.6 lbf}, spring height is 38.0 mm {1.50 in}
2.Measure the amount of off-square on the valve spring using a square.
bpe5ue00000042
|
- (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
-
IN: 2.0 ° (3.6 mm {0.14 in})EX: 2.0 ° (3.6 mm {0.14 in})
-