Everybody is good, what share with everybody today is footplate autocycle rear wheel leaves rise have abnormal knocking. The examination arrives is bearing of set square of rear wheel of this footplate autocycle rotted. Undertake tearing open solving, vent-pipe, advocate screw, it is the screw of 21 commonly much, this is of 24, those who see this is sodden already very serious, the bead of bearing had come loose. The core of bearing also becomes rusty dead. The model of bearing cannot have identified, was opposite size of annulus of bearing inside and outside just is certainly of 6203. The face has two bearing here, the outer shroud of two bearing inside now did not come out, I plan to use new bearing to be knocked forcedly directly originally, see whether can carry those two outer shroud on the head. The result is no good, have electric welding only, the screw of this solder wants a bit thicker, such more get power some, electric welding is knocked give another can be knocked with unused bearing came out. This axle sleeve should support inside this set square, an axle sleeve also should support outside, but this axle sleeve had squashed together to rot with bearing core, I replace axle sleeve with another bearing core directly, it is OK to had been installed. | | | Whether do two screw that should check chimney above all commonly become loose bring about abnormal knocking.