Cylinder head and valve mechanisms
54
7. If the distortion measured by the 6 step exceeded the max.value, grind the surface or
replace the cylinder head.
Max.grinding tolerance: 0.20mm (0.0078in)
Check of valve and valve guide
1. Measure the edge thickness of each valve head and replace the valve when necessary.
Standard thickness: intake valve: 0.85mm{0.034in}; exhaust valve: 1.50mm {0.059in}
Min.thickness: exhaust valve: 0.35mm{0.014in}; exhaust valve: 0.90mm {0.035in}
2. Measure the length of each valve and replace the valve as necessary.
Standard length:
Intake valve: 101.15～101.65{3.9823～4.0020}
Exhaust valve: 101.07～101.57{3.9791～3.9988}
Min. length:
Intake valve: 100.95mm {3.9744in}
Exhaust valve: 100.87mm {3.9712in}
3. Measure the diameter of each valve rod, at three points of A, B and C shown in Fig,
respectively in the directions X and Y, replace the valve when necessary.
Standard diameter:
Intake valve: 4.965～4.980mm{0.1954～0.1961in}
Exhaust valve: 4.955～4.970mm{0.1951～0.1957in}
Min.diameter
Intake valve: 4.915mm {0.1935in}
Exhaust valve: 4.905mm {0.1931in}
Thickness of edge
To Next Page
Loading...
