Ukuvulwa nokuvalwa kweIIVAVAVU ZESANGO  ivaliwe, ayiguquki okanye ayikwazi ukuvula nokuvala ngokuqhelekileyo, okanye ayikwazi ukuqhubeka nokuvula nokuvala, ngokukodwa ngenxa ye-jam phakathi kwe-valve stem kunye nezinye iindawo, ngokukodwa i-jam phakathi kwe-valve stem kunye nokupakisha.Ngokubanzi

Idlala lokupakisha liyaphambukiswa kwaye libethe isiqu sevalvu

Indlela yonyango: faka ngokuchanekileyo

Ukupakisha kufakwe ngokungalunganga okanye kuqiniswe kakhulu

Indlela yonyango: qinisa kwangaphambili umhluzi kwaye ukhulule umhluzi ngokufanelekileyo.

Isiqu kunye nokupakisha idlala lokuluma

Indlela yonyango: ukubuyisela okanye ukulungisa.

Ukuluma okanye ukuluma phakathi kwamalungu

Indlela yonyango: Thambisa isiqu sevalve ngokufanelekileyo.

Imikrwelo kumphezulu wevalve yokutywina, ukukrwela ukukrwela kumhlathi wokukhanya wesiqu sevalve kunye nemikrwelo yokuluma kwindawo ephothiweyo yesikhondo sevalve, njl.njl ayicocwa, ibangela ukuba umphezulu wokutywina ukrwele;emva kokusetyenziswa okuthile, iinkozo ezinqabileyo zikhutshwa phantsi kokukhukuliseka kwendawo kwaye zinamathele kwindawo yokutywina.Ivalve ivuliwe kwaye ivaliwe.Zibangele ama-brasions.

Indlela yonyango: Sebenzisa iibrasives ngokufanelekileyo, kwaye ucoce indawo yokutywina emva kokusila.

Ukungcola okanye i-welding slag kwi-medium ayicocwanga, ibangela imikrwelo.

Indlela yonyango: coca kwakhona.

IIVAVAVU ZESANGOukhuhla isiqu kumkhono wokupakisha wokucofa kunye nephedi yokupakisha.I-medium equkethe i-boron phakathi iya kucwebezela ukwenza amasuntswana anzima emva kokuba ikhutshwe.Xa ukupakisha kuthinta isiqu sevalve, umphezulu we-valve stem uya kuxinzelelwa xa utshintsha.

Indlela yonyango: ukufakela okuchanekileyo, ukulungelelanisa ukucocwa kweengxenye kunye nokuphucula ubunzima bomhlaba we-valve stem.Intambo ye-trapezoidal ingcolisekile kwaye imeko yokuthambisa imbi;Isiqu sevalvu kunye namalungu anxulumeneyo akhubazekile

Indlela yonyango: susa izinto ezibiweyo, sebenzisa i-lubricant kwi-valve yobhedu yokushisa okuphezulu ngexesha;lungisa iindawo ezonakeleyo.