'04 Stumpjumper Expert FSR
Cassette: Shimano HG-50 LX, 9-speed, 11x34t
Hub: Shimano M-525 Disc, 32 hole
The problem is that the cassette keeps getting loose. I mean the gears spin freely back and forth (within the cassette) by approx. +/- 1 cogtooth width. The looseness also causes a slight banging when I go over bumps. And I'm having terrible shifting problems. I've properly torqued the cassette down but it still loosens up.
I inspected the smallest cog and it seems it may not be fitting 100% down on the next cog. I heard that sometimes Shimano's dies would wear out and the alignment holes (or posts) weren't made deep enough. Comments? I added a spacer next to the largest cog but it loosened up again on the next ride, causing more frustrating shifting problems. If anything, the spacer exacerbated the problem.
I'm thinking of chucking it and buying an XT 760 for $75. But I'm on a budget. Can it be fixed? Maybe it's gunked up with oily dirt. Will cleaning help? Or perhaps a thicker spacer? Or a spacer which acts like a lock washer?
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