What tools do I need?

elyob said:

http://static.flickr.com/66/199657963_2aa2304e86.jpg?v=0

Need to tighten the BB, and wondered what I need for this, as my MTB is a
big allen key .. this isn't. Is a socket set okay? Then what do I need to do
if I need to rebed the BB itself? (A mechanic told me that the clunk I
sometimes hear could be because of this reason).

Thank

Socket set will be fine if it fits - the outside diameter might be too
big. My crank extractor has a socket on the other end that you can
then drive with an ordinary spanner (forget exactly what size)

Tim.

Quoted message said:

elyob said:

http://static.flickr.com/66/199657963_2aa2304e86.jpg?v=0

Need to tighten the BB, and wondered what I need for this, as my MTB is a
big allen key .. this isn't. Is a socket set okay? Then what do I need to do
if I need to rebed the BB itself? (A mechanic told me that the clunk I
sometimes hear could be because of this reason).

Thank

Socket set will be fine if it fits - the outside diameter might be too
big. My crank extractor has a socket on the other end that you can
then drive with an ordinary spanner (forget exactly what size)

Tim.

Just incase, I assume you are just asking how to remove the bolt -
you're not intending to attempt to tighten the BB by tightening this
bolt which won't work.

Tim

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Quoted message said:

elyob said:

http://static.flickr.com/66/199657963_2aa2304e86.jpg?v=0

Need to tighten the BB, and wondered what I need for this, as my MTB is a
big allen key .. this isn't. Is a socket set okay? Then what do I need to
do
if I need to rebed the BB itself? (A mechanic told me that the clunk I
sometimes hear could be because of this reason).

Thank

Socket set will be fine if it fits - the outside diameter might be too
big. My crank extractor has a socket on the other end that you can
then drive with an ordinary spanner (forget exactly what size)

If he needs to tighten the actual BB, he'll need to pull the crank anyway...

For this job I have : crank extractor to undo bolt and remove crank, spanner
to turn crank extractor for previous two operations, BB splined tool to do
BB (attaches on my normal socket ratchet).

With the 8mm AK bolt, I'd need an 8mm allen key as well.

Then there's the other question : that won't be an adjustable BB. It could
be loose at one end, in which case, yes, tighten. Or it could be knackered.

English BB has LH thread on the chain side.

cheers,
clive

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Quoted message said:

Quoted message said:

elyob said:

http://static.flickr.com/66/199657963_2aa2304e86.jpg?v=0

Need to tighten the BB, and wondered what I need for this, as my MTB is
a
big allen key .. this isn't. Is a socket set okay? Then what do I need
to do
if I need to rebed the BB itself? (A mechanic told me that the clunk I
sometimes hear could be because of this reason).

Thank

Socket set will be fine if it fits - the outside diameter might be too
big. My crank extractor has a socket on the other end that you can
then drive with an ordinary spanner (forget exactly what size)

Tim.

Just incase, I assume you are just asking how to remove the bolt -
you're not intending to attempt to tighten the BB by tightening this
bolt which won't work.

Not sure really. I guess I'm just trying to tighten the bolts, in the same
way I do with my MTB from time to time. I also would be interested in
knowing what tools I need to tighten & remove the BB once the crank has been
removed.

Thanks

elyob said:

Not sure really. I guess I'm just trying to tighten the bolts, in the same
way I do with my MTB from time to time. I also would be interested in
knowing what tools I need to tighten & remove the BB once the crank has been
removed.

Ok.

That bolt pulls the crank onto the BB spindle. In theory, if you've
done it right and tight enough initially the bolt is doing absolutely
nothing now and can be removed. (In practice I wouldn't advise it)

Then you need a crank extractor. That screws (hand tight only) into the
crank (basically the hole that you want to put your socket into to get
that nut undone) and then there is a central bit that tightens down and
presses against the end of the BB spindle. As you tighten it the crank
is pulled off the spindle.

You can then remove the BB using a bottom bracket extraction tool.
Depends on the BB but is probably some sort of splined thing that fits
into the BB and then is turned by a normal spanner. (But it doesn't
have to be a splined thing and no doubt different BB manufacturers use
a different pitch and depth to their splines)

Reassemble in reverse order - watch out that you don't cross thread the
BB, they can be very tricky to get in straight.

Then put the cranks back on and tighten up HARD[1]. I suspect that that
is a square taper; if it keeps working lose and you keep tightening it
up then the crank _will_ split. Check very carefully for hairline
cracks radiating out from the corners of the spindle (especially on the
side nearest to the frame - which is hard to look at) if you've already
been doing this.

Tim.

[1] I'm sure there is a torque setting that can be found for your
cranks/bb.

Graham - have a look at
http://www.parktool.com/repair/readhowto.asp?id=103 or
http://www.parktool.com/repair/readhowto.asp?id=120 for crank removal,
and http://www.parktool.com/repair/readhowto.asp?id=94 for bottom
bracket hints.

If you work your way around the website, there are a good few other
pages that may help. Start from http://www.parktool.com/repair/

Hope this helps!

--
Paul Boyd
http://www.paul-boyd.co.uk/

"Paul Boyd" <[email hidden]> wrote in message
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Quoted message said:

Graham

Who's Graham?!

- have a look at

Quoted message said:

http://www.parktool.com/repair/readhowto.asp?id=103 or
http://www.parktool.com/repair/readhowto.asp?id=120 for crank removal, and
http://www.parktool.com/repair/readhowto.asp?id=94 for bottom bracket
hints.

If you work your way around the website, there are a good few other pages
that may help. Start from http://www.parktool.com/repair/

Hope this helps!

Thanks!

elyob said the following on 27/07/2006 18:58:

Quoted message said:

Who's Graham?!

Er, I've no idea where I got that from!!! Blame it on the heat :-)

Quoted message said:

Thanks!

You're welcome!

--
Paul Boyd
http://www.paul-boyd.co.uk/

elyob said:

http://static.flickr.com/66/199657963_2aa2304e86.jpg?v=0

Need to tighten the BB, and wondered what I need for this, as my MTB is a
big allen key .. this isn't. Is a socket set okay? Then what do I need to do
if I need to rebed the BB itself? (A mechanic told me that the clunk I
sometimes hear could be because of this reason).

Thank

You are showing the crank bolts. Not the BB. If it's not a sealed BB,
you may be able to tighten without special tools or crank removal. A
large set of flat spanners are the preferred tool for the job. Older
BB's have srew in races and these protrude past teh BB shell. Newer
sealed ones require a tool to tighten one end. Newer still have cranks
attached (that isn't yours!).

I like older ones as the absence of seals makes them spin so much more
freely. Of course riding through water and in extensive rain isn't such
a good thing unless they have a grease nipple on the underside of the
BB shell.

If it's really loose, it's probably more efficient to get a shop to
replace.

regards
d.

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Quoted message said:

elyob said:

Not sure really. I guess I'm just trying to tighten the bolts, in the
same
way I do with my MTB from time to time. I also would be interested in
knowing what tools I need to tighten & remove the BB once the crank has
been
removed.

Ok.

That bolt pulls the crank onto the BB spindle. In theory, if you've
done it right and tight enough initially the bolt is doing absolutely
nothing now and can be removed. (In practice I wouldn't advise it)

Then you need a crank extractor. That screws (hand tight only) into the
crank (basically the hole that you want to put your socket into to get
that nut undone) and then there is a central bit that tightens down and
presses against the end of the BB spindle. As you tighten it the crank
is pulled off the spindle.

You can then remove the BB using a bottom bracket extraction tool.
Depends on the BB but is probably some sort of splined thing that fits
into the BB and then is turned by a normal spanner. (But it doesn't
have to be a splined thing and no doubt different BB manufacturers use
a different pitch and depth to their splines)

Reassemble in reverse order - watch out that you don't cross thread the
BB, they can be very tricky to get in straight.

Then put the cranks back on and tighten up HARD[1]. I suspect that that
is a square taper; if it keeps working lose and you keep tightening it
up then the crank _will_ split. Check very carefully for hairline
cracks radiating out from the corners of the spindle (especially on the
side nearest to the frame - which is hard to look at) if you've already
been doing this.

Tim.

[1] I'm sure there is a torque setting that can be found for your
cranks/bb.

Any idea what size? I need to buy myself a socket set/torque wrench and am
about to have a look on ebay (or anywhere else I might get a good deal).

Any ideas where to get a good quality, but lower priced set?

Thanks