i need some help

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

Need to change front tyre and brake pads...

The frigging pinch bolts on the fork are seized solid...
Took it to my local garage... after they applied heat... still nothing
and the bolts are rounding off! (allen bolts)

What my next option? was thinking to put the bolt extractors...
but drilling a steel bolt... knowing the fork bottom casing is alluminium...
consequences could be disastrous...

Any help?

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

Allen key welded to bolt head and undo - job done. If its rounding off then the allen keys must be a very poor fit.

Are the bolts recessed inside the fork bottoms?

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

Allen bolts are recessed in the fork casing by 2mm.

allen key was good fit (bolt rusted) and even garage applied heat and still didn't budge...

Just had a thought... still got some caustic soda left... hmmm maybe?

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Try hammering in a torx head?

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

G only problem is that i haven't got any torx keys...

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Unfortunate; I was in Harrogate yesterday evening and could have brought you a selection of old ones I don't care about to try out.

Have you tried soaking it in WD40?
Giving it some decent whacks with a hammer?
Doing it up slightly first?
Freezer spray to go with the heat?

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

G have a look at this... this is the pigging problem...

https://i174.photobucket.com/albums/w81/phonesurgeon/Nikon%20D40X/DSC_3081.jpg

Tried heat... wd40... doing it up slightly... hammer... tapped it gently... tap it vigourosly... nothing.

I am considering using caustic soda on it

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

I'd ideally try some heat with some freeze and release.

Doubt it's worth it, but if you can make it over to Keighley in an evening, don't mind giving a hand to see what we can do with stuff I've got here.

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

G keighley is not a million miles from me...

And i appreciate your offer...
its only a case of when'sa good day for you?

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

I would still weld an old allen key with that.

don't use caustic soda, it will eat the alloy. But as others have said, try freeze ad release spray, and loads of wd-40 or plus gas etc.

I think the only way on that is to weld and undo........its looks like its laughing at you.

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Now that I've said that, realised I'm actually busier than I thought.
Any time this evening is fine, or later tomorrow evening.

Drop me a PM.

phonesurgeon · Nova Slayer Joined: 27 Dec 2010 Karma :

G PM sent

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Failing everything. I once had a similar arrangement and landed up hacksawing them in half through the split in the bottom of the fork leg. I then levered the bits with the head in out by hammering an old screwdriver in the gap I just sawed then used the hole they left as a drill guide.

As it happens, after only a few turns of the drill, it grabbed the stubs and screwed them all the way out through the other side.

I preferr the idea of welding an allen key to them though.

Clear case for using an air impact wrench in the first place as soon as you/they realised they weren't going to move.
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