ʻO ka pad cylinder, ka mea i ʻike ʻia ʻo ka cylinder liner, aia ma waena o ke poʻo cylinder a me ka poloka cylinder. ʻO kāna hana ʻo ia ka hoʻopiha ʻana i nā pores microscopic ma waena o ke poʻo cylinder a me ke poʻo cylinder, e hōʻoia i ka sila maikaʻi ʻana ma ka ʻili hui, a laila e hōʻoia i ka sila ʻana o ke keʻena kuni, e pale i ka leaka o ka ea a me ka leaka wai wai. E like me nā mea like ʻole, hiki ke hoʻokaʻawale ʻia nā ʻāpana cylinder i nā metala - asbestos gaskets, metala - composite gaskets a me nā gaskets metala āpau. He sila ma waena o ka piko o ke kino a me ka lalo o ke poʻo cylinder pad. ʻO kāna hana ʻo ia ka mālama ʻana i ka sila ʻaʻole leak, mālama i ka mea hoʻomaha a me ka ʻaila e kahe ana mai ke kino a hiki i ke poʻo cylinder ʻaʻole e kahe. ʻO ka pad cylinder e halihali i ke kaomi ma muli o ka hoʻopaʻa ʻana i ka pahu poʻo cylinder, a ua kau ʻia i ke kiʻekiʻe kiʻekiʻe a me ke kiʻekiʻe o ke kinoea puhi ahi i loko o ka cylinder, a me ka corrosion o ka aila a me ka coolant.
Pono e lawa ka ikaika o ka pahu hau a kū i ka leʻaleʻa, ka wela a me ka ʻino. Eia kekahi, pono ka nui o ka elasticity e hoʻopaʻi i ka ʻōpala a me ka ʻole o ka ʻili luna o ke kino a me ka lalo o ke poʻo cylinder, a me ka deformation o ke poʻo cylinder i ka wā e hana ana ka mīkini.
