Following on from the excellent post by @DOIGAN where he replaced the bearings in one of the fans from his MVHR, this is a short post to detail the steps to replace the bearings in the extract fan in my Vent Axia Sentinel Kinetic Plus B (being a slightly different model and fan to that of the link below)   The process I followed is basically the same as laid out by @DOIGAN in his original post. I've added a couple more pictures and descriptions below.     To get at the