|1982 Nishiki BB||B2|
Mar 28, 2003 5:02 PM
|A co-worker of mine commutes to work on an old Nishiki touring bike (1982). He has never serviced the BB. It appears that it now needs to be replaced (possibly rebuilt). What kind of tool is required to remove the BB and are there any BB's available that are compatible with a Nishiki frame of this era and what appears to be Nishiki house brand cranks?
|re: 1982 Nishiki BB||Rusty Coggs|
Mar 28, 2003 5:34 PM
|all the ones I ever encountered were english thread(68mm shell width and 1.37 x 24 tpi) and tools needed were standard cup and ball type tools. Current BB are cartridge type and need a differnt tool to install /remove. You need to match threading and spindle length as measured from end of taper to end of taper.|
|Is it worth it?||Kerry|
Mar 29, 2003 7:13 AM
|Assuming it is, though you could easily put as much into this job as the bike is worth, here we go:
1 crank removal tool
2 lock ring spanner
3 fixed cup tool (maybe)
The job is:
- remove both cranks
- loosen lock ring (left side) with lock ring spanner
- remove adjustable cup (left side). Probably can do this with a punch or screwdriver and a few light taps with a hammer (use the pin holes on the adjustable cup - lefty loosey). Possibly a bike this cheap has wrench flats on the adjustable cup instead of pin holes.
- remove bearings and axle. Wipe everything clean with a rag (including inside of frame and fixed cup) and inspect. You'll likely find pitting on the axle, dulled/corroded bearings, and pitting on the cups. Replace what is pitted/corroded. If the fixed cup is damaged, you may be able to remove it by putting the flats of the fixed cup in a good bench vice and twisting the frame. Get your parts from an "older" bike shop. A place that has been in business for a lot of years will likely have the parts and can help you with advice. Alternatively, on a bike this old and cheap to begin with, maybe just replace the bearings and "who cares" about the rest of it.
- grease everything well and reassemble.
Good luck. Jobs like this can turn into an endless series of damage control efforts.
|Probably a good question||B2|
Mar 29, 2003 7:07 PM
|I took a look at it without removing the cranks and didn't see any BB configuration that I knew how to remove. Thus the post here on RBR.
He's actually looking for an excuse to by a new bike. Maybe this is it.