Philips turntable SG 1116 / AG 1016 substituting the rubber driving belt

I need help on Philips turntable SG 1116 / AG 1016. To substitute the rubber driving belt. In the elektrotanya web site there is download page philips_ag1116_turntable_sm.pdf there are pages with part numbers. The new belt #19  can be lowered around the turntable from the top. Then underneath the belt has to pass over the small axle that rests in a small black plastic bearing #54 to place it on pulley #61. Question: how to dismount and remount the bearing #54 without damage. The bearing has a small lip - should that be turned or pulled?  Many thanks and regards, Rudy