Checking the type of the working surface of the valve disc
1. Valve chamfer contact surface (1) should be in the middle of the width of the valve disc and evenly pass around the entire circumference.
2. If the thickness of the valve disc (2) below the wear limit (limit value), replace the valve.
Cylinder head machining dimensions
If the deformation of the sealing surface exceeds the limit value of 0.1 mm, the sealing surface of the cylinder head should be machined.
Height of the new cylinder head: 137.9–138.1 mm.
Attention! Cylinder head and engine block can be machined by a maximum of 0.2 mm in total.