How To Fit A Bottombracket.

[Trials_joe]

You will need:

Lots of Grease

8mm allen key

Crank puller

Splined BB tool

Large adjustable spanner

I find it easier to wash my bike before i go putting any new stuff on because you may put you hand in some dirt or dog mess.

1. Take crank arms off. To do this, undo the 8mm Allen key bolt. Take your crank puller and apply a small amount of grease on the threads as this will help to not strip the threads inside. Screw in the crank puller and turn clockwise. Slowly the crank will start to come off. You need to do this on both sides.

2. Now to taking out the actual Bb. Start on the left side (Which is the Non-Drive side) you need to but your Bb tool into the located positions. Once in make sure you hold the tool in position whilst turning it Anti-clockwise.

3. Now you need to take of the Right hand side (Which is the Drive side). Do exactly the same before making sure the tool doesn’t slip off. This time it you need to turn it clockwise.

4. Once removed you need to degrease/Clean the threads make sure there’s no dirt what so ever. This is because the dirt might damage your threads.

5. Now apply LOTS of grease (This may get a little messy). Now comes to fitting your new bottom bracket. Start with the left hand cup (Non-Drive side). Screw it in Clockwise, using your fingers, as it shouldn’t be that tight.

6. Now its time for the Drive side. This needs to be screwed in Anti-Clockwise into the frame. Again using your fingers.

7. Now you need to tighten it all up (Using your BB tool and Spanner). Do each side in turn. So tighten left-side two rotations and the right-side two. As the cups get closer to the frame you will not need to turn it that much. Now check it’s all tight and flush against the frame.

8. Finally attach you crank arms. You can put a light smear of grease on the Bb axle and on the Crank bolts. Then clean it all up. Pack your tools away and enjoy a non-creaking, smooth Bb.

If your Bb is creaking on your first ride this maybe because you need to 'face' your Bb shell. Any Good Bike store can do this.

I’m not taking a responsibility for any damage done to your bike, yourself or your mums new carpet. (Y)

Hope it helps. :-

[Ash-Kennard]

^^^

VALIDATE!

thanks for that i've always wondered how to do it.

[bikerboysam1]

cheers mate, i needed to know that for a while

and i agree, that deserves to be ^^^ VALIDATED ^^^

[Trials_joe]

Cheers guys! How it helps you. (Y)

Edited December 3, 2005 by Trials_joe

[basher]

cheers you've really helped

[Dai the Socket]

Just to say again.

Use shit loads of grease! Otherwise you'll strip your frame's threads, it'll creak and you'll get pissed off at it!

:- Good Topic. Aslong as it wasn't copied and pasted, I agree on validation (Y)

[TheMunn]

You don't need a heap of grease, you only need a little as it spreads around the threads. And when your putting the bb back in make sure to fully tighted the drive side before the non.

[rich4130]

I only put a smudge of grease else I find they come undone.

[Dan6061]

Didn't someone make a topic for all these little 'bike tech' guides?