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Knowledge of seals: valve oil seal function

by:ORK      2022-11-12
The valve oil seal (VALVESTEMSEAL) is generally made of the outer skeleton and fluorine rubber seals co-vulcanized. The diameter part is equipped with a self-tightening spring or steel wire, which is used for the sealing of the engine valve guide rod. It is a kind of oil seal. It can prevent oil from entering the intake and exhaust pipes, causing oil loss, preventing the leakage of gasoline and air mixture and exhaust gas, and preventing engine oil from entering the combustion chamber engine. The valve oil seal is one of the important parts of the engine valve group, which is in contact with gasoline and oil at high temperature. Therefore, it is necessary to use materials with excellent heat resistance and oil resistance, generally made of fluororubber. Valve oil seal structure-installation and replacement of valve oil seal (1) Removal steps of valve stem oil seal: ①Remove the camshaft and hydraulic tappet, and store them face down. When operating, pay attention to the fact that the tappet is not interchangeable. Use spark plug wrench 3122B to remove the spark plug, adjust the piston of the corresponding cylinder to the top dead center, and screw the pressure hose VW653/3 into the threaded hole of the spark plug. ②Fix the spring compression tool 3362 to the cylinder head with bolts. Adjust the relevant valve to the correct position, and then connect the pressure hose to the air compressor (air pressure at least 600KPA). Press down on the valve spring with the threaded mandrel and thrust piece to remove the spring. ③You can tap the valve spring seat to remove the valve lock block. Use Tool 3364 to pull out the valve stem oil seal. (2) Installation of valve stem oil seal. Fit the plastic over the valve stem to prevent damage to the new valve stem oil seal. Apply a light coat of engine oil to the oil seal lip. Pack oil onto Tool 3365 and slowly push onto valve guide. Special reminder: Before installing the intake and exhaust valves, a layer of oil must be applied to the valve stem. We welcome you to come to the company for more relevant information consultation, and we will serve you wholeheartedly. Company website: https://www.orksealing.com/
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