I've got a seized bolt with a 4mm Allen head that I need to remove, it holds a plastic swing arm protector in place, so I'm guessing applying heat isn't the best bet . To make things slightly more complicated, it's on the underside of the swing arm.

Any helpful advice for removing it would be appreciated Thanks.

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Better to Burn Out Than Fade Away

In the garage -

2001 X1
KTM390 Duke
Ducati 950 Monster +
CCM Spitfire Scrambler

Has the Allen socket rounded? If so I would radio in the molegrips. If not, what about an impact driver, the type you clout with a hammer? They are good cos the clout unloads the thread at the same time as turning the screw.

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08 Specialized Langster

Not being funny ,but as its underneath you are undoing in the right direction,

Leftie loosey, righty tighty - laid on my back when I was doing it, it was the first thing I checked when it didn't shift

Not convinced I want to be hammering the swing arm, or am I being a Jessie? And yes, its rounded off

_________________
Better to Burn Out Than Fade Away

In the garage -

2001 X1
KTM390 Duke
Ducati 950 Monster +
CCM Spitfire Scrambler

Screwfix sell a kit made by 'irwin'
For bolt removal it's saved me a lot of hassle working on seized nuts n bolts.
They cut into the outside edge of the bolt. I haven't had one sheer on me yet.

or drill the head off
remove the plastic
then heat / or release oil it
then try a stud extractor
or mole grips if you haven't got one

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Feros Ferio

That happened to me on my Trumpet in exactly the same place - tried everything and in the end it broke off flush with the suface.If you're replacing the rubbing strip why not cut the old one away around the bolt for better access and gently try a hot air gun on the job. Easy outs wouldn't budge it so I drilled it out and tapped it oversize in situ. I reckon it was corrosion from the inside of the arm on the thread of the bolt.

I'm not replacing the strip I'm fitting a scotoiler and want to use it to secure a holding bracket. The head is rounded like a screw so it might not be enough to get hold of. I think it is going to be a drill out job or think of another way of doing it.

Cheers for all the advice 

_________________
Better to Burn Out Than Fade Away

In the garage -

2001 X1
KTM390 Duke
Ducati 950 Monster +
CCM Spitfire Scrambler

Is t here enough height in the rounded head to slice a slot for a flat head screwdriver?
What about sacrificing an inexpensive Allen wrench by JB welding it into the rounded hole?

As it is holding a plastic piece, it can't be torqued very tightly, so removal should be easy. Spray on a penetrating fluid (PB Blaster type).

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2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus

This shows perfectly what a rubbish drive design an internal hex ('allen') is.....
Soak it liberally overnight in a good releasing fluid (try to get fluid onto the thread inside the arm through another hole if you can), then tap in a slightly oversize Torx (T25 or T27) or Spline (No5) bit so that it actually broaches its own fit, then, being sure not to tilt the bit in the head of the screw, use gentle leverage with a decent length bar (rather than sudden jerking movement with a shorter lever).
If it breaks, it was going to break whatever you did and you'll have to drill and retap/ helicoil, but I find this method will often save the day.

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'98 M2 Razorback, it's a keeper.

these are what i use just tap them into place and put a socket/spanner/shifters on and it should come out.
pricey but worth having a set.
http://www.screwfix.com/p/irwin-5-piece ... -set/96028

I've had a look and I can't get at the thing from the top so can't soak it with penetrating oil, + the plastic strip is proud of the head I think I'm gonna try the oversize Torx thing...

_________________
Better to Burn Out Than Fade Away

In the garage -

2001 X1
KTM390 Duke
Ducati 950 Monster +
CCM Spitfire Scrambler

You didn't really need that little, cheesy piece of plastic bolted onto the bike anyway, did you?

_________________
2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus