Sram Force BB 30 bottom Bracket Removal

christk
christk Posts: 122
edited August 2011 in Workshop
As the title suggests. The crank has two hexagonal sockets, the first one being a shallow 15mm and the inner being an eight mm hexagonal drive. I've looked on CRC web to see if I could see obvious tool with no luck.

I just want to remove the crank, clean and lubricate as I've got a slight creek when under load. Can someone advise me on what tool I need and how to do the job (ie Are there any left hand threads involved) please?

Comments

  • sungod
    sungod Posts: 16,551
    instructions are here...

    http://www.sram.com/sites/default/files ... sets_3.pdf
    my bike - faster than god's and twice as shiny
  • nicklouse
    nicklouse Posts: 50,675
    undo the center allen bolt.

    http://www.parktool.com/blog/repair-hel ... nd-removal

    bearings are not really serviceable.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • christk
    christk Posts: 122
    Thank you for your help, at the moment not looking to replace or even repair, just clean and lub.
  • Monty Dog
    Monty Dog Posts: 20,614
    Unscrew the 8mm, it may be stiff initially as it's captive but the crank will come off. The drive side may need a tap on the end of the spindle. Bearings are pressed in so you can only clean in situ.
    Make mine an Italian, with Campagnolo on the side..
  • rafletcher
    rafletcher Posts: 1,235
    christk wrote:
    Thank you for your help, at the moment not looking to replace or even repair, just clean and lub.

    Bearings are sealed units, you can't lube them. If the creak is between BB and shell nothing you can do as berings are pressed into BB shell.

    Bit of a bugger really!

    http://www.parktool.com/blog/repair-hel ... nd-removal
  • sungod
    sungod Posts: 16,551
    on mine you just pop the side seals off the bearings and pump in grease - i've got bb30 red, this is a standard procedure described in the maintenance instructions
    my bike - faster than god's and twice as shiny
  • christk
    christk Posts: 122
    Job done :D It's amazing how much crap can get in such a small space.

    Thanks for everyones comments,it's just a case that after coming from a MTB background and now having a carbon toy just makes me nervous of applying too much force. Next on the shopping list is a torque wrench me thinks. Any recommendations?
  • sungod
    sungod Posts: 16,551
    sealey torque wrenches...

    stw1012 for small stuff, 2-24 newton metre, this is the most useful range

    there's also stw1011 if you really want one for cassettes etc., i think it's about 7-110, but i usually go by feel on the chunky bits

    they come with calibration certificate and storage case, quality is good

    these guys give good service...

    http://www.toolstoday.co.uk/
    my bike - faster than god's and twice as shiny

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