cutting a thread

[reacher]

I'm in the proocess of replacing my BB , when i screwed in the crank puller/remover i found that the thread is slightly damaged by the previous owner , can i cut a new 22mm thread on them , if so how ?
they are Token Mono Q and its on the chain set side , most of the thread is intact its like one half has been crossed , the crank puller will go all the way in , but the first time i tried it it pulled out , the second time it held ,

 

[rusty bearing]

We've been presented with this situation before so we used a fairly standard three armed bearing puller. Not the easiest thing to work with but it pulled of a well stuck chainset which had no thread in it at all....

 

[compo]

If you have pulled the extractor out of the threads in the crank then you are unlikely to have sufficient metal remaining to successfully cut new threads. Another issue is cost. Take a look at the price of cycling specific taps here http://www.ebay.co.uk/sch/i.html?_pppn=v3&_kw=bottom&_kw=bracket&_kw=taps and I think you will agree that it would be cheaper to get a new crankset.

 

[tyred]

Leave the bolt slightly loose and go for a ride up a hill in a high gear.

 

[I like Skol]

Leave the bolt slightly loose and go for a ride up a hill in a high gear.

I was given a similar tip for stuck alloy wheels on cars. Rather than hours of sweat and tears often resulting in a damaged rim simply loosen the wheel nuts 1 or 2 turns then go for a quick drive around the block (even better if there is a cobbled road nearby).

 

[reacher]

We've been presented with this situation before so we used a fairly standard three armed bearing puller. Not the easiest thing to work with but it pulled of a well stuck chainset which had no thread in it at all....

brilliant , just the job , thanks