Enqubweni yokwakhiwa kwemigwaqo emikhulu, imishini yokwakha imigwaqo ivame ukudala izinkinga eziningi ngenxa yokusetshenziswa okungafanele, ngakho-ke inqubekelaphambili yephrojekthi kufanele imiswe, okuthinta kakhulu ukuqedwa kwephrojekthi yokwakha. Isibonelo, inkinga ye-valve yokuhlehla yesitshalo sokuxuba i-asphalt.
Amaphutha e-valve ehlehlayo yemboni yokuxuba itiyela emishinini yokwakha umgwaqo awayona inkimbinkimbi. Ezivamile ukuhlehla kungazelelwe, ukuvuza kwegesi, ukwehluleka kwevalvu yokushayela kazibuthe kagesi, njll. Izimbangela ezihambisanayo nezisombululo zihlukile. Ukuze i-valve ehlehlayo ingashintshi indlela ngesikhathi, ngokuvamile ibangelwa ukugcotshwa okungalungile, isiphethu sibambekile noma sonakaliswe, ukungcola kwamafutha noma ukungcola kubambeka engxenyeni eshelelayo, njll. Ngalokhu, kuyadingeka ukuhlola isimo i-lubricator kanye nekhwalithi yamafutha okugcoba. I-viscosity, uma kunesidingo, i-lubricant noma ezinye izingxenye zingashintshwa.
Ngemuva kokusetshenziswa isikhathi eside, i-valve ehlehlayo ijwayele ukugqokwa iringi yokuvala i-valve core, ukulimala kwesiqu se-valve nesihlalo se-valve, okuholela ekuvuzeni kwegesi ku-valve. Ngalesi sikhathi, indandatho yokuvala, isiqu se-valve kanye nesihlalo se-valve kufanele kushintshwe, noma i-valve ehlehlayo kufanele ishintshwe ngokuqondile. Ukuze unciphise izinga lokuhluleka kwezixube ze-asphalt, ukugcinwa kufanele kuqiniswe nsuku zonke.
Uma imishini yokwakha umgwaqo isiphuka, ingathinta kalula ukuqhubeka kwephrojekthi, noma imise ukuqhubeka kwephrojekthi ezimeni ezibucayi. Kodwa-ke, ngenxa yethonya lokuqukethwe komsebenzi kanye nezici zemvelo, imishini yokuxuba i-asphalt izolahlekelwa nakanjani ngesikhathi sokusebenza. Ukuze sinciphise ukulahlekelwa futhi sandise isikhathi sokusebenza kwemishini, kufanele senze umsebenzi omuhle ekunakekeleni.
Hlola ukuthi amabhawudi enjini yokudlidliza akhululekile yini; hlola ukuthi amabhawudi engxenye ngayinye yesiteshi se-batching akhululekile yini; hlola ukuthi i-roller ngayinye ibambekile yini/ayizungezi; hlola ukuthi ibhande liphambukile yini; hlola izinga likawoyela nokuvuza, bese ubuyisela uphawu olonakele uma izingxenye ezidingekayo bese wengeza amafutha; hlanza izimbobo zokungenisa umoya; gcoba igrisi kusikulufa sokucindezela ibhande lesidluliseli.
Hlola ukuthi amabhawudi engxenye ngayinye yesiqoqi sothuli akhululekile yini; hlola ukuthi isilinda ngasinye sisebenza ngokujwayelekile yini; hlola ukuthi isilinda ngasinye sisebenza ngokujwayelekile yini nokuthi kukhona ukuvuza endleleni ngayinye yomoya; hlola ukuthi ingabe ukhona yini umsindo ongajwayelekile kufeni yokusalungiswa ekhangisiwe, ukuthi ibhande liqine ngokufanelekile yini, nokuthi ingabe umshini wokuwasha uyaguquguquka. Umshini ungavalwa njalo ngesikhathi sokusebenza ukuze unciphise ukulahleka kwesikrini esidlidlizayo.