(1) Ukukhishwa kwenhlanganisela yegiya kukhulu kakhulu noma kuncane kakhulu.
(2) Ibanga eliphakathi nendawo phakathi kwembobo ye-crankshaft ephethe imbobo kanye nembobo ephethe i-camshaft liyashintsha ngesikhathi sokusetshenziswa noma kulungiswa, libe likhulu noma libe lincane; imigqa yesikhungo se-crankshaft kanye ne-camshaft ayihambelani, okuholela ekungeneni kwegiya okubi.
(3) Ukucutshungulwa okungalungile kwephrofayili yezinyo legiya, ukubola ngesikhathi sokwelashwa kokushisa noma ukuguga ngokweqile endaweni yezinyo;
(4) Ukuzungezisa igiya--Igebe phakathi kwezikhala eziququdayo kusiyingi alifani noma i-undercut iyenzeka;
(5) Kunezibazi, ama-delamination noma amazinyo aphukile endaweni yezinyo;
(6) Igiya likhululekile noma liphumile ku-crankshaft noma i-camshaft;
(7) Ukuphuma kwegiya kobuso obuyisiyingi noma ukuphuma kwe-radial kukhulu kakhulu;
(8) I-axial clearance ye-crankshaft noma i-camshaft inkulu kakhulu;
(9) Amagiya awashintshwa ngamabili.
(10) Ngemva kokushintsha izihlahla ze-crankshaft kanye ne-camshaft, indawo yokuxhuma igiya iyashintshwa.
(11) Inathi yokulungisa igiya le-camshaft ayilungile.
(12) Amazinyo egiya lesikhathi le-camshaft aphukile, noma igiya liphukile lapho libheke khona.