If you rebuild the 930 tensioner, like I did I would like to offer some advice:
Do your due diligence on wearing eye ( and face ) protection as there are lots of powerful springs and circlips to deal with. Parts can shoot off and never be found
so be careful on disassembly, and re-assembly. John Walker has a good thread here in pelican on the re-building and bleeding of these tensioners.
Bill
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