Akara mmanụbụ okwu a na-ahụkarị maka akara n'ozuzu, nke na-ezo aka na akara nke mmanụ mmanụ.Ọ bụ ihe eji arụ ọrụ eji emechi griiz (mmanụ bụ ihe kachasị mmiri mmiri na sistemụ nnyefe, nke a na-akpọkarịkwa ihe mmiri mmiri n'ozuzu).Ọ na-ekewapụ ihe ndị dị mkpa lubrication na ihe ndị na-ebufe ihe na-emepụta ihe na-emepụta ihe, ka ọ ghara ikwe ka mmanụ mmanụ na-agbapụta.Akara akara ejiri maka akara static na ike (na-emekarị mmegharị mmegharị) ka a na-akpọ akara mmanụ.Ụdị ihe nnọchianya nke akara mmanụ bụ akara mmanụ TC, nke bụ akara mmanụ egbugbere ọnụ abụọ na mmiri na-agbatị onwe ya ma kpuchie ya kpamkpam.N'ikwu okwu n'ozuzu, akara mmanụ na-ezokarị aka na ụdị TC Oil Seal a.Ụdị ihe nnọchianya nke akara mmanụ bụ akara mmanụ TC, nke bụ akara mmanụ egbugbere ọnụ abụọ na mmiri na-agbatị onwe ya ma kpuchie ya kpamkpam.N'ikwu okwu n'ozuzu, akara mmanụ na-ezokarị aka na ụdị akara mmanụ skeleton TC a, a na-egosipụtakwa ihe osise nke akara mmanụ skeleton na ọnụ ọgụgụ ahụ.