Sweet Crank/ Sweet Parts



A

astbury531

Guest
Anyone know about the all steel Sweet Crank from the late 90's? Are the
bottom bracket bearings replaceable?



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On Fri, 04 Jun 2004 07:00:43 GMT, astbury531
<[email protected]> wrote:

>Anyone know about the all steel Sweet Crank from the late 90's? Are the
>bottom bracket bearings replaceable?


Yup. I still had one in use until a few weeks ago. Terrific crank!
Yes, the bearings are replacable and are standard metric bearings,
size 6804 and 6805. You will need one of each. Be sure to specify 2
rubber seals. They are cheap. Buy the best they have at the bearing
shop (ANY bearing shop will have them). To remove the bearings, you
will need to be careful. On the side with the bearing external to the
BB shell, you will simply be able to drift the bearing to the outside
by using a wooden dowel as a drift punch and something for support (I
used a shop towel and it worked fine. On the other side, there is a
spacer that will come out first (drift the bearing toward the side
without the tool splines). Again I used a wadded up shop rag for
support, or you can bore out a block of wood with a hole the size of
the threaded part to act as a support for the bearing shell.
For God's sake, use green Loctite on the spacer only when you have
reinstalled the bearings. The spacer is just a loose press fit and can
come out if you don't Loctite it in. You can also use it on the inner
bearing race to crank shaft interface. Let it set overnight, but spin
it freely every few hours to make sure it isn't sitting cockeyed ever
so slightly like it might if you are showing significant shaft wear.
This wear is compensated for by the green Loctite in the shaft/bearing
interface.