patrickza Posted October 14, 2013 Share My cranks have some play in them, looks like the shaft in the BB is the cause. I'd like to open it up to check the bearings etc. Any idea what tools I'd need? Obviously an 8mm allen wrench which I have, then I'll need a crank puller which I should be able to find, but lastly I'll need something to undo whatever you call that piece with all those grooves in it. Any ideas? And will the other side be the same, I can't see past the sprockets. The cranks have TRUVATIV FIVE D written on them if that helps. Thanks. Pic below.http://i174.photobucket.com/albums/w112/pgpatrick/utf-8BSU1HLTIwMTMxMDE0LTAwMzY2LmpwZw_zpsdb038f75.jpg Link to comment Share on other sites More sharing options...
Chro Mo Posted October 14, 2013 Share http://www.parktool.com/product/bottom-bracket-tool-BBT-22 Link to comment Share on other sites More sharing options...
djr50 Posted October 14, 2013 Share Looks like you might need one of these ParkTool BBT-22 or BBT-32. Count the slots to know which tool to use. Link to comment Share on other sites More sharing options...
droo Posted October 14, 2013 Share You'll need: 8mm hex keyISIS crank extractorPark BBT-2 BB spline tool or equivalent (Shimano, Ice Tools, Pedros and a few others make similar things)Large shifting spanner or 3/8" drive socket handle to operate aboveNew BB of the same type - spline, shell width and axle length (unless you have a press and are handy with replacing bearings, but a new BB will most likely be cheaper anyway)Rag to clean out shell And that's about it... good luck! T-Bag68 1 Link to comment Share on other sites More sharing options...
djr50 Posted October 14, 2013 Share Looks like you might need one of these ParkTool BBT-22 or BBT-32. Count the slots to know which tool to use. Wow sorry for the real bad image Link to comment Share on other sites More sharing options...
EVOBIKES ONLINE STORE Posted October 14, 2013 Share My cranks have some play in them, looks like the shaft in the BB is the cause. I'd like to open it up to check the bearings etc. Any idea what tools I'd need? Obviously an 8mm allen wrench which I have, then I'll need a crank puller which I should be able to find, but lastly I'll need something to undo whatever you call that piece with all those grooves in it. Any ideas? And will the other side be the same, I can't see past the sprockets. The cranks have TRUVATIV FIVE D written on them if that helps. Thanks. Pic below.http://i174.photobucket.com/albums/w112/pgpatrick/utf-8BSU1HLTIwMTMxMDE0LTAwMzY2LmpwZw_zpsdb038f75.jpg You need an ISIS BB Tool Like this one: http://www.evobikes.co.za/components/tools/ice-toolz-shimano-isis-bottom-bracket-tool.html Link to comment Share on other sites More sharing options...
Wez-O Posted October 15, 2013 Share By the way, how often should one service the BB? Link to comment Share on other sites More sharing options...
droo Posted October 15, 2013 Share By the way, how often should one service the BB? It's a sealed unit, so not really a serviceable part. Replace when it starts feeling crunchy. To test, take your chain off and spin the cranks. Wez-O 1 Link to comment Share on other sites More sharing options...
rouxtjie Posted October 15, 2013 Share It's a sealed unit, so not really a serviceable part. Replace when it starts feeling crunchy. To test, take your chain off and spin the cranks.They would like you to believe so...but possible on external bb's though http://www.thehubsa....-cheap-rebuild/ Edited October 15, 2013 by rouxtjie Link to comment Share on other sites More sharing options...
Big H* Posted October 15, 2013 Share They would like you to believe so...but possible on external bb's though http://www.thehubsa....-cheap-rebuild/ That is for external bearings. If it is an Isis BB the bearings are sealed and very difficult to service. Vernon Koekemoer learnt Chuck Norris to service them. Edited October 15, 2013 by Big H* Link to comment Share on other sites More sharing options...
rouxtjie Posted October 15, 2013 Share That is for external bearings. If it is an Isis BB the bearings are sealed and very difficult to service.yes correct oom I did amend my post just after i submitted it thinking exactly what you are saying Link to comment Share on other sites More sharing options...
T-Bag68 Posted October 15, 2013 Share Hi Patrickza I have just done mine.... I got all the tools mentioned above, got to work on it.... The problem I had was "once the allen key bolt was out of the way and I had pulled the arms off, I took the fancy looking tool and took of the piece with all the teeth in it.... the one side was easy, but when I got to the drivechain side, I battled for ages, eventually took it to local shop, it took him 2 mins because it had a longer extension to get the leverage... once done... out comes the BB, but then I got a new one that was 5mm longer, so when putting back together, the blades stuck to far out from derailer... so make sure it is the same as the one that came out.... Hopethis helps a little.. Link to comment Share on other sites More sharing options...
Big H* Posted October 15, 2013 Share Hi Patrickza I have just done mine.... I got all the tools mentioned above, got to work on it.... The problem I had was "once the allen key bolt was out of the way and I had pulled the arms off, I took the fancy looking tool and took of the piece with all the teeth in it.... the one side was easy, but when I got to the drivechain side, I battled for ages, eventually took it to local shop, it took him 2 mins because it had a longer extension to get the leverage... once done... out comes the BB, but then I got a new one that was 5mm longer, so when putting back together, the blades stuck to far out from derailer... so make sure it is the same as the one that came out.... Hopethis helps a little.. The BB length is stated on Shimano BB's. Longer or shorter will affect your chain line. Make sure you get the correct one. I hate the socket type tool shown above. You get tools that are socket driver and handle in one with a spindle that screws into the BB axle. That gives you proper alignment and rigidity. Link to comment Share on other sites More sharing options...
droo Posted October 15, 2013 Share Hi Patrickza I have just done mine.... I got all the tools mentioned above, got to work on it.... The problem I had was "once the allen key bolt was out of the way and I had pulled the arms off, I took the fancy looking tool and took of the piece with all the teeth in it.... the one side was easy, but when I got to the drivechain side, I battled for ages, eventually took it to local shop, it took him 2 mins because it had a longer extension to get the leverage... once done... out comes the BB, but then I got a new one that was 5mm longer, so when putting back together, the blades stuck to far out from derailer... so make sure it is the same as the one that came out.... Hopethis helps a little.. May also be because the right hand side is a left hand thread... Edited October 15, 2013 by droo Link to comment Share on other sites More sharing options...
droo Posted October 15, 2013 Share They would like you to believe so...but possible on external bb's though http://www.thehubsa....-cheap-rebuild/ Yup. Haven't replaced a BB in ages - I just get the bearings from Rush Sports and replace. For the older external shells you can just use 6805.2RS from Bearing Man, but the new ones have a special proprietary bearing that's 1mm narrower. Just to annoy the 'fixers' among us. You can also replace the bearings on older cartridge style BBs, but the process is quite painful and bearings (especially for ISIS and whatever the weird standard Truvativ used on the five-D was called) can be expensive and hard to find. Easier just to fork out R200 for a new unit. rouxtjie 1 Link to comment Share on other sites More sharing options...
Big H* Posted October 15, 2013 Share Shimano has the Octalink splined bearing. They were not the nest ever design. Our MTB Tandem has a Shimano Hollowcrank (1) crankset with Octalink BB's. When the first one went I ordered six from www.chainreactioncycles.com Not sure if the Truvativ Isis is of better design. Link to comment Share on other sites More sharing options...
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