Prop up a reducer a jack No. 00 2 030 and adaptation No. 33 4 390.
Turn out a bolt.
Give nuts with left and with right the parties.
At installation use new самоконтрящиеся nuts.
Installation is made upside-down. Make sure that the bolt (1) is inserted from the correct party. In conclusion check oil level in a case of a reducer and if necessary modify level.