The screw on the bottom left has to come out, I have sprayed it with WD40 e.t.c and attacked it with Mole Grips but it is not going to move. I would drill it out but there is zilch room for a drill.
You can buy or maybe hire some very small air drills. Infact I think I have some redundant ones at work. Not sure where you get the air from though.../forums/images/icons/laugh.gif
Could you get a small Dremel type tool in there with a small grinding disc on and cut a slot in the screw then a screwdriver on it? Or if you're really clever, again with a Dremel, grind two flats on it for a pair of mole grips or a spanner? Or maybe a small right angled drill (you can hire one for the day from HSS or Speedy or Hire Shop) and then use an Easyout? Access don't look too difficult.
Failing that lot, or if it's sheared off flush and there's no access, it's gonna be a take-it-out job to work on it on the bench. (Gulp) But you knew that already didn't you?
Better to heat the surrounding area and freeze the bolt, heating the bolt would expand it, which is NOT what you want, but I dont think excess local heating of a casting a very good idea, risk of cracking or distortion.
This may sound odd but I have removed sheared studs using a sharp centre punch on one side of a stud,if sheared it means the pressure between the head and thread has been removed, so it just depends how tight this bolt is. Prob Bloodey tight or else it would not have been damaged.
Another tool very good for removing tight things, although it renders them useless after is a Footprint wrench. They actually cut into whatever you are trying to undo and grip tighter and tighter. Your bolt/screw looks a bit small to grip.
Go and have a beer, then have another go at it. Good luck.
When all else fail flatten off head of screw,get a mini drill for pilot hole then bit of heat and a set of "easy out extractors),to avoid knackering thread in hole.
<hr width=100% size=1>If it aint broke fix it till it is.
Having had to drill broken studs out on heating boilers in tight spaces I bought a flexible drive. Similar to this one. <A target="_blank" HREF=http://www.toolspot.co.uk/product/taylor-flexible-drill-shaft>http://www.toolspot.co.uk/product/taylor-flexible-drill-shaft</A>. They get into very confined spaces
I had several sheared cylinder head bolts in an old car I used to have. In the end I used a grinder to put some flats on it and then used a gadget called a gatorgrip to wind it out.
Worked ok.
If yo cant tackle it yerself. Go see yer local engineer. We extrude plastic and have sheared off more nuts/bolts than I can remember. All delt with if not by ourselves but by local friendly engineery man. Back in half a day good as new. My machines are mostly 1960's with modifications. There almost 1990 now.../forums/images/icons/laugh.gif Dont stuggle, it's easy with the right equipement and only costs a few quid.
<hr width=100% size=1>deborah on delft.
Nothing to do with Mucky Farter or hlb in drag