Need a clue to take off cranks - Help?!?

You need a crank extractor,see your local bike shop to buy one and ask to
the guy how to use it. Good luck! Jim.
"JBK" <[email hidden]> a écrit dans le message de
"]news:[email hidden]...

Quoted message said:

I'm a novice mechanic trying to rehabilitate a bike abandoned by a friend. It's a Nishiki
Sport (mtn bike), ~10 years old. I'm trying to replace the bottom bracket, which has
disintegrated. I took off the nuts where the cranks (apparently) attach to the bottom bracket
but I can't figure out

how

Quoted message said:

to get the cranks off. Here are 3 close-up pictures: johnkim.myserver.orgbikeOpen ↗ I
looked at some how-to books & websites to no avail. Can someone provide a clue? Thanks,

-John

JBK said:

I'm a novice mechanic trying to rehabilitate a bike abandoned by a friend. It's a Nishiki Sport
(mtn bike), ~10 years old. I'm trying to replace the bottom bracket, which has disintegrated. I
took off the nuts where the cranks (apparently) attach to the bottom bracket but I can't figure out
how to get the cranks off. Here are 3 close-up pictures: johnkim.myserver.orgbikeOpen ↗ I
looked at some how-to books & websites to no avail. Can someone provide a clue? Thanks,

-John

parktool.comFAQrCarm.shtmlOpen ↗

Looks as if your axle has a threaded end. The photos on the Park site show mainly ones that have
internal threads. No biggie- you just need to back off the inner part of the crank puller tool
enough so that it pushes against the end while *thoroughly threaded* into the crank arm.

Be careful threading the tool on- go slow, backwards until you feel it drop into the end of the
threads and then thread. Don't force. Grease on the threads of the tool is helpful.

Dan Daniel said:

Looks as if your axle has a threaded end.

Yes, the ends are threaded (and had nuts on each end, which I took off [2nd picture]).

Quoted message said:

back off the inner part of the crank puller tool enough so that it pushes against the end while
*thoroughly threaded* into the crank arm.

I hope this makes more sense once I get a crank extractor, but ... what's holding the crank in place
right now? Is it friction? Or is it screwed in somehow? Or some sort of clip?

I took a look at some crank extractors online and there seem to be universal ones that fit both
threaded axles and square axles. I hope something like that works for my bike. I'll swing by a local
bikeshop tomorrow and see what they have.

Thanks Doc & Dan.

-John

JBK said:

Dan Daniel said:

Looks as if your axle has a threaded end.

Yes, the ends are threaded (and had nuts on each end, which I took off [2nd picture]).

Quoted message said:

back off the inner part of the crank puller tool enough so that it pushes against the end while
*thoroughly threaded* into the crank arm.

I hope this makes more sense once I get a crank extractor, but ... what's holding the crank in
place right now? Is it friction? Or is it screwed in somehow? Or some sort of clip?

It's basically friction.

The crank arm is mounted on a tapered square drive, and the retaining bolt has pushed the arm onto
this taper with considerable force.

Have a look at:

sheldonbrown.comcotterless.htmlOpen ↗

for more info.

Quoted message said:

I took a look at some crank extractors online and there seem to be universal ones that fit both
threaded axles and square axles. I hope something like that works for my bike. I'll swing by a
local bikeshop tomorrow and see what they have.

Thanks Doc & Dan.

-John

a) Top posting.
b) What's the worst thing about UseNet?

Quoted message said:

a) Top posting.
q) What's the worst thing about UseNet?

You prefer spam over top posting?!

"vic" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

JBK said:

Dan Daniel said:

Looks as if your axle has a threaded end.

Yes, the ends are threaded (and had nuts on each end, which I took off

[2nd

Quoted message said:

Quoted message said:

picture]).

Quoted message said:

back off the inner part of the crank puller tool enough so that it pushes against the end while
*thoroughly threaded* into the crank arm.

I hope this makes more sense once I get a crank extractor, but ... what's holding the crank in
place right now? Is it friction? Or is it screwed in somehow? Or some sort of clip?

It's basically friction.

The crank arm is mounted on a tapered square drive, and the retaining bolt has pushed the arm onto
this taper with considerable force.

Have a look at:

sheldonbrown.comcotterless.htmlOpen ↗

for more info.

Quoted message said:

I took a look at some crank extractors online and there seem to be

universal

Quoted message said:

Quoted message said:

ones that fit both threaded axles and square axles. I hope something like that works for my bike.
I'll swing by a local bikeshop tomorrow and see

what

Quoted message said:

Quoted message said:

they have.

Thanks Doc & Dan.

-John

a) Top posting.
q) What's the worst thing about UseNet?

Ronald said:

Quoted message said:

a) Top posting.
q) What's the worst thing about UseNet?

You prefer spam over top posting?!

Weeelll, yes and no: I really don't give a toss about newsgroup spam, as I only ever have to
download the headers. Yes, it pushes worthy stuff off some high-traffic groups, but with a decent
newsfeed, this ain't ever fatal.

Spammers are like incontinent feral animals, recognising no rules and rspecting nothing and nobody.

Top-posting newsgroup participants really should know better.

Vic.

a) Top posting.
b) What's the worst thing about UseNet?

vic said:

Top-posting newsgroup participants really should know better.

Vic.

a) Top posting.
q) What's the worst thing about UseNet?

Didn't it used to say /most annoying/ thing?

Bill "more accurate, IMO" S.

S o r n i said:

vic said:

Top-posting newsgroup participants really should know better.

Vic.

a) Top posting.
q) What's the worst thing about UseNet?

Didn't it used to say /most annoying/ thing?

Bill "more accurate, IMO" S.

I'm not sure... I'll do a quick Google later to check.

Vic.

q) What's the most annoying thing about UseNet?
r) Pedantry.

On Mon, 23 Feb 2004 15:20:21 +0100, "Ronald"

may have said:

Quoted message said:

a) Top posting.
q) What's the worst thing about UseNet?

You prefer spam over top posting?!

a) because I don't read it, and wouldn't respond to it, so it doesn't cause me to have to fix the
format before I can do something with it.
b) why is spam less annoying than top posting?
c) yes, though I am known to delete both *unread*.
d) You prefer spam over top posting?!

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

On Mon, 23 Feb 2004 19:38:00 +0000, vic <[email hidden]>

may have said:

S o r n i said:

vic said:

Top-posting newsgroup participants really should know better.

Vic.

a) Top posting.
q) What's the worst thing about UseNet?

Didn't it used to say /most annoying/ thing?

Bill "more accurate, IMO" S.

I'm not sure... I'll do a quick Google later to check.

Vic.

q) What's the most annoying thing about UseNet?
a) Pedantry.

AOL may be worse than pedantry.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.