Had the exact same
problem, only took me about two hours to work it out by trial and error!
However use this link, its a photo of the set-up that i think will be the same as yours, looks the same as the golf anyhow.
http://www.renault4.co.uk/tech-brake-drums.htm
On the right i seem to remember having to use a screwdriver to lever a metal part into place, difficult to describe. Its a fiddly job so dont worry if it takes a while to do!
Also, the master cylinder, dont know if you have used an elastic band to hold the piston each side of it in place. If not and its leaked you will need to re-bleed the brakes.
ALSO dont breath anything in, really hazardous stuff so dont get too close, or wear a mask.