case-international compatible spare parts clutch case-international tractor series 33 = 533a, 540, 633a, xe, xf, 640, 740, 733a (from may 1978 onwards), 833a/e/h/v, 840, 933, 940 case 533/a 540 633a/xe/xf 733a 740 833 a/e/h/v 833 s/xl/xls 933 description : 6-lever mechanism complete plate diameter 290 mm reference code (cer.): 15546 case - international