air hold fitting

air hold fitting
A tool which uses air pressure to keep the valves closed when working on an OHV engine. The device is screwed into the spark plug holes and air pressure keeps the valves from dropping down. In this way the valve seal or valve spring can be replaced without removing the cylinder head.

Dictionary of automotive terms. 2015.

Игры ⚽ Нужно решить контрольную?

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