The Dispatch | Expert | Scudo Hub

Hello Im new to the forum today. ive been struggling on my own for ages with various bits and pieces on my citroen dispatch 1.9d 06. Can anyone point me to best step by step photo guide of replacing rocker gaskets? I have a leak close to vacuum pump. Van is idling badly too so might be vacuum pump prob too. I found out that Haynes manual doesnt do one for us, so what would you recommend? Ive turned my van into a part time camper and really love it. With a side awning for kitchen its an ideal set up. ive put 2 wooden beams across van to support a bed deck so space isnt compromised below. I can put up pics if anyone is interested. Looking forward to trawling through all this relevant information!! Cheers for now.