Headset Press Disaster

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drossall
Posts: 5257
Joined: 5 Jan 2007, 10:01pm
Location: North Hertfordshire

Re: Headset Press Disaster

Post by drossall »

I've broken a couple of Record vices trying to get bike bits out. Unlikely in this case though.
MartinC
Posts: 1935
Joined: 10 May 2007, 6:31pm
Location: Bredon

Re: Headset Press Disaster

Post by MartinC »

Success! 10 minute job with the right approach. Explanation and pics below. Basically a rawlbolt. Thanks again for all the helpful advice suggestions and encouragement. The clarity of thought given by having to explain something to expert people is invaluable too.

The hole in the headset press cup adaptors was 16mm - exactly the same size as a 16mm rawlbolt. Fixing one of these into the top meant I could use the headset press shaft as a drift - the cup adaptors provided precise alignment and support. So with a kettle of hot water, some cloth wrapping the headtube to hold the heat and a lump hammer the cup adaptor drove out with 3 decent blows. Because I was holding the frame by hand by the head tube there was no stress on the frame. I then drove out the bottom cup adaptor just using the heat, hammer and a wooden dowel that fitted exactly (an old homemade wardrobe hanger rail I kept - never throw bits of wood away!).

So frame is fine, headset press is fine, headset cups are fine except for some cosmetic marks from when I tried to twist out the adaptor in the vice.

Pics
Pic4.jpg
Top one driven out with rawlbolt in it.

Pic5.jpg
How it was driven out

Pic6.jpg
Bottom one driven out

Lessons:
Check the cup/cup adaptor fit before using the press.
Rawlbolts are good for blind holes.
Wrapped cloth is good for holding the water heat against the metal.
This forum has some excellent people - thanks again.
iandusud
Posts: 938
Joined: 26 Mar 2018, 1:35pm

Re: Headset Press Disaster

Post by iandusud »

Well done. :D
slowster
Posts: 2169
Joined: 7 Jul 2017, 10:37am

Re: Headset Press Disaster

Post by slowster »

Nice work. Thank you for coming back and letting us know how you did it.
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kylecycler
Posts: 872
Joined: 12 Aug 2013, 4:09pm
Location: Kyle, Ayrshire

Re: Headset Press Disaster

Post by kylecycler »

Well done - glad you managed it! :)

Apologies for this being a vague and quite possibly stupid question - just thinking out loud but maybe not very cleverly - could you used a rawlbolt to remove and (hopefully) easily re-insert the dust cap in a freehub body, or just hubs in general, without distorting the cap?

RJ the Bike Guy on YouTube uses a blind hole bearing puller - he already had one - but it's fairly expensive to buy for all it will ever be used:

https://www.youtube.com/watch?v=X9gIEG1db0s&t=51s

I've tried removing one by levering it out but distorted it and haven't bothered since, but removing it makes it easier to clean out old grease, plus I'd have to remove the dust cap entirely if I ever need to remove the cup (I've got the tool for that) to get at freehub body internals. I've got a freehub that tends to stick every now and then, just once per revolution. I've tried getting lube into it but although that helped, it hasn't fully cured the problem.

Sorry for the thread drift but just wondering if a rawlbolt could be used for another purpose, same principle. Or if anyone does it another way?
slowster
Posts: 2169
Joined: 7 Jul 2017, 10:37am

Re: Headset Press Disaster

Post by slowster »

kylecycler wrote: 11 Jun 2021, 7:09pm Apologies for this being a vague and quite possibly stupid question - just thinking out loud but maybe not very cleverly - could you used a rawlbolt to remove and (hopefully) easily re-insert the dust cap in a freehub body, or just hubs in general, without distorting the cap?
....
Sorry for the thread drift but just wondering if a rawlbolt could be used for another purpose, same principle. Or if anyone does it another way?
List of links in Too Good To Lose to various posts by Brucey on Shimano hubs and freehubs:

viewtopic.php?p=1564606#p1564606

Including this one:

viewtopic.php?p=1082177#p1082177
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kylecycler
Posts: 872
Joined: 12 Aug 2013, 4:09pm
Location: Kyle, Ayrshire

Re: Headset Press Disaster

Post by kylecycler »

slowster wrote: 11 Jun 2021, 7:18pmList of links in Too Good To Lose to various posts by Brucey on Shimano hubs and freehubs:

viewtopic.php?p=1564606#p1564606

Including this one:

viewtopic.php?p=1082177#p1082177
Thanks.
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