Post by geh3333 on Dec 5, 2014 20:21:09 GMT -5
With all the pounding you would probably do well to replace the bearing in the swing arm and possibly the bearings on the shaft inside the gearbox. Sometimes if you grasp the swinga rm with your hand and gently tap the sides of the housing alternately top and bottom you will get things moving. A lot of little taps and fewer great big ones.
If you approach it from inside the gear case - On a GY6 you need to remove circlip #10 to get the bearing off the shaft so that you can drive part #9 out the right hand side of the bike. Then you can see about putting the swing arm in a vise to try and drive the shaft out that way.
www.partsforscooters.com/scooter-parts-diagrams/125cc-150cc-GY6-4-Stroke-Transmission_2
If you open up the gear case you will need new shaft seals and a new gear case cover gasket.
Are you 100% sure you can push the inner bearings that are attached to the axle" they are not attached to the axle the axle runs through the bearings" out the other side " between the brake shoes ". When I replaced mine I of course pulled the axle out the normal way and then I had to push the bearings out of the engine case. So those bearings will need to come out the other way and with the axle.
