Pofuna kupereka makasitomala ndi mavavu otetezeka, chaka chino NSEN Mavavu angoika kumene ya akupanga kuyeretsa zida.

Vavu ikapangidwa ndikukonzedwa, padzakhala zinyalala zomwe zimalowa mu dzenje lakhungu, kuchulukidwa kwa fumbi ndi mafuta opaka mafuta omwe amagwiritsidwa ntchito pogaya, zomwe zimakhala zokwanira kuti kulumikizana kwa valavu mu payipi kusakhazikika, kupangitsa kuti valavu ikhale yolephera pakugwira ntchito. .Zotsatira zake, zida zonse zamakina zomwe zimagwiritsa ntchito valavu zimawonongeka.Kubadwa kwa makina otsuka akupanga amatha kuthetsa vuto la madontho awa a valve.

Kawirikawiri akupanga kuyeretsa ntchito padziko mankhwala a kanasonkhezereka, faifi tambala-yokutidwa, chrome-yokutidwa, ndi utoto mbali, monga peeling, degreasing, pretreatment ndi kusamba.Chotsani bwino mitundu yonse yamafuta, phala lopukutira, mafuta, graphite ndi dothi kuchokera kuzinthu zachitsulo.