compatible spare parts mechanism case - international tractor series 55-56: 856xl, xla, 955xl, 956 xl, xla, 1055 xl, 1056 xl, xla case 533/a 540 633a/xe/xf 733a 740 833/a/e/h/v 833/s/xl/xla 833 description: 6-lever mechanism complete flat plate diameter 310 mm original part no.: 135 508 a1, 3220 807 r3 reference code (cer.): 15550 case - international