Removing Shimano Press Fit BB

birdie23

Hi all,

I'm attempting to drift out the BB86 on my bike using a flat head screwdriver and a hammer but as it stands all I seem to have done is dented a lot of plastic. I'm loathe to spend £30 on the Park tool. Any advice? I'm close to giving up and going to a shop because I need the bike for the weekend.

Thanks,

laurentian

Could you use a short length of 40mm plastic/nylon tubing (like a sink waste pipe) to drift it out evenly?

benmac75

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19672155#p19672155]laurentian[/url] wrote:

Could you use a short length of 40mm plastic/nylon tubing (like a sink waste pipe) to drift it out evenly?

Yep, I had success doing this. Cut some slots in it a la the real tool, worked a treat but was only really a one time use thing.

birdie23

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19672416#p19672416]benmac75[/url] wrote:

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19672155#p19672155]laurentian[/url] wrote:

Could you use a short length of 40mm plastic/nylon tubing (like a sink waste pipe) to drift it out evenly?

Yep, I had success doing this. Cut some slots in it a la the real tool, worked a treat but was only really a one time use thing.

Off to B&Q now for some tubing and a hacksaw! Will report back

birdie23

So far. Not so good. Plastic tube just came straight out with how hard I'm having to hit it. Metal tube not even making a difference. This thing was pressed by Goliath

jgsi

How are you hitting it?
In a workstand?
Knocking out some bb30 bearings on a frame some while back, I had to take wheels off and place frame flat over some wooden block supports in order to get some wellie into the drifting out with the hammer.

birdie23

It was stood on its bars and saddle but I've now got it on its side with some boxes under either side of the bb.

Not sure how much more welly I dare it with though as its carbon

jgsi

Well supported you should be able to get a controlled drift, being firm handed. As long as you dont clatter the frame with the hammer it will be fine.

birdie23

Think I'm going to have to find a LBS tomorrow. Broke my plastic pipe drift I was hitting it so hard.

DKay

I hope the previous person hasn't bonded it in with anything silly.

birdie23

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19672744#p19672744]DKay[/url] wrote:

I hope the previous person hasn't bonded it in with anything silly.

This is currently my fear.