Putting it all back together
I’ve finally (after an expensive battle with the magneto) got the case open and am looking at what I need to replace before I start putting it all back together again.
My reason for opening it is that the bike had just half a litre of oil in it when I got it and I had no idea how long it had been ridden like that. So I’ve spent the last year riding it and wondering if every knock and rattle was a sign of impending disaster. I decided the only way to be sure was to open it up over the winter, renew where necessary and put it all back together for some carefree riding next year.
The oil on the inside of the case is rust-coloured and filled with loads of tiny black particles. They are too fine to feel with my fingers but I can see them. Most of the ‘rust’ seems to be coming from the main bearing which I guess is shot. I’m thinking about replacing all the bearings anyway just to be sure.
I also have some doubts about the crankshaft. There is some blueing around the pin joining the crank halves so I’m guessing there has been overheating at some time. There is no noticeable up and down play in the rod, but sideways it moves up to 1.4mm (the manual says 0,8mm should be the max).
- Given these signs should I get it rebuilt with a new big end bearing, rod and pin?
- Kedo seems to be a good, but pricey, choice but I’ve been quoted a much better figure for a Mitaka set. Does anyone have any views, good or bad, on this brand?
Thanks as always for the help.
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