Zoben fistan yana aiki a cikin matsanancin zafin jiki, matsa lamba, babban gudu, da yanayin aiki mara kyau. A lokaci guda, dole ne ya kasance yana da kyakkyawan aikin rufewa, zubar da mai, da ayyukan tafiyar da zafi. Dole ne ya tabbatar da aikin hatiminsa kuma ya hana zoben piston daga makale a cikin zoben Grooves da cylinders, don haka dole ne a sami gibi uku yayin shigar da zoben piston.

Akwai gibi uku da za a auna lokacin da aka sanya zoben piston, wato, gibba uku na zoben piston a takaice. Na farko shine ratar budewa, na biyu shine ratar axial (bangaren gefe), kuma na uku shine ratar radial (rabin baya). Bari mu gabatar da hanyar auna na zoben piston gibba uku:

Tazarar budewa
Budewa shine ratar zoben piston da buɗewa bayan an shigar da zoben piston a cikin silinda don hana zoben piston ya makale bayan an yi zafi da faɗaɗa. Lokacin duba ratar ƙarshen zobe na piston, saka zoben piston a cikin silinda kuma tura shi tare da saman fistan. Sa'an nan kuma auna ratar a bude tare da ma'aunin kauri, yawanci 0.25 ~ 0.50mm. Saboda yawan zafin jiki na aiki, ƙarshen ƙarshen zobe na farko ya fi girma fiye da sauran zoben.

Tazarar gefe
Tazarar gefe tana nufin tazarar sama da ƙasa na zoben piston a cikin tsagi na zobe. Tazarar gefe da yawa zai shafi tasirin rufewa na piston, kuma ƙaramin zoben piston na gefe zai makale a cikin ramin zobe. A lokacin aunawa, ana saka zoben piston a cikin ramin zobe kuma a auna tare da ma'aunin kauri. Saboda yawan zafin jiki na aiki, ƙimar zobe na farko shine gabaɗaya 0.04 ~ 0.10mm, kuma na sauran zoben gas shine gabaɗaya 0.03 ~ 0.07mm. Gefen gefe na zoben mai na yau da kullun yana da ƙananan, yawanci 0.025 ~ 0.07mm, kuma babu tazarar gefen zoben mai a hade.

Tazarar baya
Tazarar baya tana nufin tazarar da ke tsakanin bayan zoben piston da kasan ragi na zoben piston bayan an shigar da piston a cikin silinda. Gabaɗaya ana bayyana shi ta bambance-bambance tsakanin zurfin tsagi da kauri na zobe, wanda shine gabaɗaya 0.30 ~ 0.40mm. Back rata na talakawa man zobba ne in mun gwada da manyan. Babban aikin shine saka zoben fistan a cikin ramin zobe. Idan yana ƙasa da bankin zobe, ana iya jujjuya shi da yardar kaina ba tare da jin astringent ba.