On stripping the gearbox and inspecting the high gear bush I have noticed that about half way down inside the bush there is an area about 1/2" wide or so of wear and galling which is quite rough to touch. The strange thing is that the high gear is a good fit on the shaft with a very small amount of play which I percieve to be within tolerance because both ends of the bush are in good condition. The shaft only shows a small amount of wear in the corresponding area although it does have a pollished look. Is it necessary to replace this bush? and what would have caused the wear in the centre? If the bush is replaced, is there any advantage heating the component on disassembly?
I would appreciate any advice from someone who has carried out this work.
Last edited by twinspin; 02/13/19 5:28 pm.