Renult Master tuning 2.5 dci 120 G9U engine

I need if someone can help me because I have a Master Mod 2007 Motor G9U 2.5 and it turns out that the distribution belt tensioner is broken. Therefore, the valves have been bent and perhaps bent.
The issue is that in the manual of this vehicle it appears how to change a distribution strap but not how to put it ready.
If someone worked on any of these I would like to give me a hand.
Thank you already

Hello, how many kilometers that car has because if it is 2007 I think it can happen to you in guarantee, check well to see if you can save that repair and pass it through the mother house, and these cars must be for two years of guarantee at least here in Europe, find out well because if in the manual it tells you that you have to change it to 120000 km and you break before and you did all the reviews as you should believe that you can claim here you can See.- Greetings Alfredo

MR: VEW LINK: www.matrasport.dk/cars/espace/vault/je/3...Mmon_rail_system.pdf

Thanks for the link, every information is little for us greetings from Tenerife.