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Bugi la bo phan tao ra tia lua dien trong buong dot, moi truong lam viec cua no rat khac nghiet, tan suat lam viec cao, chi phoi rat nhieu den hieu suat cua dong co. Sau moi 4.000 km, can phai thao bugi ra de kiem tra dinh ky, chinh khe ho giua chau mat va dien cuc (+).
Kiem tra chung thuong ky Khi xe cua ban chay duoc mot thoi gian (tren 2.000 km), thao bugi ra de quan sat, ta co the doan biet duoc tinh trang dong co: 1. Su cach dien (bao quanh cuc + o giua vanh tron dau bugi) co mau do gach nung, chau va noi bugi kho sach, chung to dong co hoan toan tot. 2. Su cach dien va chau bi bao phu mot lop muoi den, kho, nghia la nhien lieu khong duoc dot chay het, do cac nguyen nhan sau: - Vit lua ro, ro. - Dien thu cap yeu. - Bugi dang dung sai tieu chuan (loai qua nguoi). - Che hoa khi chinh sai ty le hon hop, bi thua xang. - Ap luc nen trong buong dot thap, xu pap bi xi. 3. Su cach dien, chau mat ban, bam day muoi than uot, nhu vay la dau nhon bi lot vao buong dot, do sec mang va xi lanh mon. Bao duong can chinh theo dinh ky Trinh tu thao tac nhu sau: 1. Dung xe tren chan chong giua, rut nap day cao ap khoi bugi. 2. Lam sach khu vuc quanh chan bugi tren nap quy lat. 3. Dung tuyp bugi thao no ra khoi dau quy lat. 4. Ngam dau chau vao xang, dung que go moi sach muoi ban ben trong noi bugi, tranh lam sut vo su cach dien. Rua lai voi xang that sach va thoi kho.
5. Dung mot vat chuan phang det day 0,7 mm de kiem tra khe ho giua chau mat voi dien cuc (+) o trung tam. Khe nay rong qua thi tia lua kho phong qua, mat lua o toc do thap, chong hong bobin suon. Nhung neu no hep qua thi tia lua lai khong du lon de hon hop bat chay, xe khong boc, ton xang. Chinh lai khe ho bang cach go vao hoac nay ra mo chau mat mot cach nhe nhang. 6. Sau khi da lam sach, quan sat xem su cach dien co nut, me khong, dien cuc co mon qua khong. Neu co mot trong cac dau hieu tren thi phai thay bugi moi. 7. Bugi van dang o ngoai, cam nap tiep dien vao, ke vo sat cua no len than may, dap can khoi dong roi quan sat tia lua, chung phai phong deu, manh, tap trung giua chau va cuc (+). Neu lua nho, phong lung tung ra xung 8. Khi lap lai bugi vao quy lat, gio vai giot dau vao gien roi dung tay xoay nhe cho den khi vao het, dung tuyp siet them 1/4 vong. 9. Neu dien cao ap bi mat qua day va chup bugi, xe thuong chet may khi di mua hoac sau khi rua. Kiem tra ky, neu thay loi thi phai thay moi, thao tac cuoi cung la lap lai nguon dien nay va no thu may. X.T. |
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Viet Bao
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