Seized shootbolt

[Comeonyouluckies]

I have a small window which is a top opener. It has a middle lever beneath the handle and a sliding bolt either side. One of the sliding bolts has seized in the locked position, and I can’t get to it to undo any screws or even spray it. From the outside I can just manage to get a screwdriver in, but cannot move the bolt. Any ideas as I’m sure I’m not too far from forcing the bolt out.
I have looked at an identical window, to see how much bolt goes in the locking plate, and I can’t be far off of getting the window open with the bolt still in the locked position, but there is no more give on the opposite side of window.
I removed handle and used a longer spindle and molegrips, but that only opens the middle lever and one side of bolt.
Do I need to remove the glass, to make it easier???
Any help please.

 

[Mr diy a lot.]

Removing glass won’t help or give more access. I know that much. Just more jiggery pokery req and you might have to slightly damage window to get it open but you can repair and repaint afterwards.

 

[Comeonyouluckies]

Thanks for that

 

[ronniecabers]

By the sounds of it , one of the dhootbolts has come adrift from the gearbox , actually quite common. Seeing as you have tried to release it already without removing the glass then the answer is to remove the glass . Reason being is then you can wedge out the side that opens, clear of the frame and the force the stuck side over. Pvc and wood have a lot of movement once that glass is removed. With glass in situ it is acting as a brace, and leaving it in you will run a real risk of breaking it.
I have used the above method many times to free stuck shootbolts , and suspect it will be the actual window lock ' gearbox ' that is at fault

 

[Mr diy a lot.]

That makes a lot of sense. He is right.

 

[Comeonyouluckies]

All sorted thanks, just waiting for new locking mechanism to arrive, and will attempt to put that in.