Wadanne dalilai ne ke haifar da ƙarar ƙarar ƙofar ƙofar?
1. Zane da matsalolin tsarin masana'antu, saman iyakar iyaka da gefen abin nadi yana goyan bayan amo mara kyau, ƙofar hinge shaft da jujjuya juyi na iyaka ba daidai ba ne;
2. Buɗe ko rufe kofa da ƙarfi na dogon lokaci, yana haifar da nakasar ƙarfi, lanƙwasa da lalacewar maƙarƙashiyar ƙofar;
3. Haɗuwa ta hanyar haɗuwa mara kyau;
4. Ƙofar iyaka lalacewa ko faɗuwar kofa yayin amfani;
5. Fuskar mai iyaka shine rashin lubrication.
Manufar maƙarƙashiyar ƙofar ita ce iyakance iyakar abin da za a iya buɗe ƙofar. A daya hannun, zai iya iyakance iyakar bude kofa don hana ta bude da fadi da yawa, kuma a daya bangaren, zai iya ci gaba da bude kofa a lokacin da ake bukata, kamar lokacin da mota da aka ajiye a kan wani tudu ko lokacin da akwai wani al'ada iska, kofa ba za ta atomatik rufe.There akwai biyu na kowa mota kofa limiter, su ne torsion bar spring limiter da ja bar limiter. Daga samar da kudin ko tabbatarwa kudin, ja bar limiter ne mafi alhẽri daga torsion mashaya spring limiter, ta halitta mafi na kowa, amma iyaka sakamako na ja bar limiter ba torsion mashaya spring limiter haka kawai, da wasan kwaikwayon ne mafi mikakke, wasu motoci ji da iyaka a bayyane yake kuma wasu motoci ba a bayyane yake ba.
