2) To replace this sleeve, you must first release it completely by heating with a large torch to expand it.After complete cooling, check the adjustment of the key and clean the end of the shaft as well as the bore of the half couplingHeat the ½ male coupling to around 100/150 ° C to be able to expand it and place it on the shaft. Be careful to put it flush with the end of the shaft and especially in the same direction as for disassembly (do not hesitate to look on another machine how it was done by us), once in place, press in the key a background. The next day, check that the sleeve is "blocked" well.3) Now, you can put the distance pipes in place and perform an empty rotation test.