Cheers @ Alan G H
I'm just looking in the manual yep exhaust, sump, plus pulleys , it's just had timing belt done in summer also just fitted a brand new turbo 3 weeks ago , need to make a sprocket holding tool , and crack on I think.
The only thing that bothers me is the timing set up but I will mark it all up before I remove anything and pray
If your car is an Astra H the timing is easy. From memory, an 8mm bolt screwed through a hole in the cam sprocket, and line up the mark on the crank pulley with the mark on the oil pump casing. The fuel pump doesn't need timing.
You will need to hold crank somehow to undo the centre bolt in the front pulley (possibly jam something in the flywheel ring gear).
If you are thinking of a sprocket holding tool for the oil pump, I just use a long socket on to one of the mouting bolts, through one of the holes in the sprocket, with a long extension to hold it square.
In the book it says once the timing belt is back on you have to take out the m8 locking bolt and turn crank anti clockwise 60 degrees then clockwise to set the tensioner I dont know what 60 degree is lol