It should be noted steam seal blocks must assembly fit to number, for those not symmetrical high low gear seal block, should be careful not to anti-loaded, generalyl high gear in the machine head side. Steam seal block assembly, in case of steam seal block and the channel too tight, carefully repair with rasp, and not forced into the slot, then steam seal block assembled, the spring and steam seal block should not cover up the surfaces of steam seal and separator combination, around the steam seal block, the gap should be left not less than 0.20mm.