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DA 7700 BB installation question(3 posts)

DA 7700 BB installation questionMajor Taylor
Jul 16, 2001 4:19 AM
DA 7700 BB installation instructions says I need a TL-74S tool to install the cups. Checked a Shimano catalog and it appears that this tool is different from the standard cartridge BB installation tool I have for UN91 type BB's (and different than the tools I have for the XTR BB's!!). Does Park make one of these or do I have to get it from Shimano?
re: DA 7700 BB installation questionTJeanloz
Jul 16, 2001 8:28 AM
The BB2 from Park is the tool you need, it is exactly the same spline pattern as the old tool, but the old one doesn't have a big enough hole in the tool to accomadate the oversized spindle.
Actually....1 grzy mnky
Jul 16, 2001 9:46 AM
Yes, he's right you need the newer tool. the newer tool is deeper to accomodate the larger diameter splined spindle and it may be used on the older designs as well. For a DA or XTR installation you also need the lock ring wrench that has four tabs for grabbing the exterior of the lock ring while holding the cup with the other tool. The tools are the same for DA and XTR even though the design of the splines are different (just Shimano's way of keeping you buying more parts when you want to do an upgrade and doing some mix 'n' match).