CAMSHAFT - Sheared bolt

[RickDonoghue]

Ok so last night I sheared a bolt, if thats the correct word to use? (whilst replacing the valve cover gasket)

Basically I need advice on how to get this out and if it's possible and relatively straight forward to remove the camshaft holder?

My plan is to take it to remove the holder and take it to a specialist engineer as I will probably make a mess!



[IMG]http://i64.tinypic.com/hv1ki8.jpg[/IM

Thanks!

[dobbslc]

If the cam cap comes off you can get a pair of mole grips around what's left sticking out. Unless you've cross threaded the bolt it will just unscrew as now it won't have any torque on it as the heads gone!

[lukemillar]

Doubt there will be any part sticking out but as dobbslc says there will be no torque on it and it'll unscrew easily. You could probably just get a reverse drill bit to bite and it'll spin right out

[st22041967]

What everybody else said. I think the tool is called an "e-zee out" or similar, worth having in your toolkit anyway. Probably telling you to suck eggs, but make sure you cover up with clean rags to prevent nasty little bits of swarf getting in the engine .....

[dobbslc]

I reckon about 1/4" will be left sticking out when that cap is out the way.
Easy outs! They've never worked for me and if one snaps you will now also have a sheared hardened steel lump stuck that you can't drill!
I say
1 cap off.
2 heat area.
3 cover with rags.
4 try a pair of pliers or grips on it.
5 rejoice that you joined 400 greybike took some good advice and did it yourself and didn't let some ape at a bike shop bugger up an otherwise good engine!

[Neosophist]

that should come out easy.

you can either remove the cam cap or tackle it insitue.

you can either use a screw extractor tool but dont break it as mentioned above they are much harder to remove.

my usual approact to this kind of problem is using a small burr grinder on a dremel, cover the area to protect from swarf and dont touch the sides of the hole else you will knacker the threads but you can grind a small slot into the middle of the bolt and use a flat bladed screwdriver to unscrew it.

[dobbslc]

Have you fixed it yet?

[RickDonoghue]

All sorted thanks! Got a mate of mine to have a look who's an engineer. He just said he gently tapped in some kind of chisel then simply unscrewed it with a flat head screw driver. I wish he told me that I didn't need to take the holder off now as it appears to be pretty complex to put the camshaft and holder back on etc.

Should be sorted if I carefully follow the steps in the Haynes manual, it was easy enough to get off anyway...

Cheers guys.

[dobbslc]

Sweet

[Neosophist]

yep, thats very much the hammer and chisel approach to my cut a slot in it and use a screw-drivers.

sometimes with the softer bolt and smaller chisels, screwdrivers / prybars you can get away with hammering something in there and turning it out, ive used small torx bits in the past after punching a dot in it but can get messy.

glad you got it out.

when re-installing cams follow the service book and make sure the cams are lined up properly else you can easily destroy the engines valves and cause an expensive repair if they are not timed right