1-12610080-2 1126100802 Valve Rocker Arm for Isuzu 6WG1 ZX450 ZX470-3

In addition, damage to the valve rocker arm may also cause obvious metal knocking sounds. If the wear is excessive, it may have an adverse effect on the intake and exhaust, and serious damage may even cause the engine to fail to start. 

‌Therefore, ‌For diesel vehicles, it is very important to ‌regularly check the working status of the valve rocker arm, ‌maintain the good operating status of the engine, and ‌avoid overload operation and poor operation.

‌At the same time,‌strengthening the promotion and education of diesel engine maintenance knowledge,‌improving users' maintenance awareness and skill level,‌is also an effective measure to ensure the normal operation of the engine and extend its service life.‌

The possible reasons for the valve rocker arm to break are as follows: The valve clearance is too small; the valve guide is not pressed deep enough and is too long above the cylinder head plane, causing the spring seat to hit the top of the valve guide when it is opened. At the same time, one end of the rocker arm is forced downward by the camshaft, resulting in the valve rocker arm to break; the valve head plane does not sink deep enough into the cylinder plane. When the valve is opened, the valve collides with the piston, causing the rocker arm to break; the valve is stuck in the valve guide.