quruxa silaasaha qorshaha baluursan
Qaabka qofka valve stem oil seal waa qoraal muhiim ah ee motorada dhexdooda oo la isticmaalayo, taasoo ka dhigan qofka valve stem iyo qofka cylinder head ee motorada. Tani waa qaabka qofka loo sameeyay si guul darro ah inuu ugaagaaro ilmooyinka motorada inay gacan kaga baxaan qofka combustion chamber ka dib marka ay ku jiraan qofka valve guide clearance, halkaas oo ku xidhan inuu ugaagaaro ilmooyinka qofka valve stem. Qaabka qofka valve stem oil seal wuxuu shaqayn doonaa hal dhinaca caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh jiritaanka caadi ah ee jirto, taasoo leh......