Well let me be the first to congratulate you on your purchase . They are an excellent vehicle , and will give many years of service , if taken care off . Older vehicles do need a little extra care than the newer models , but to mitigate that are often simpler and easier to work on . One of the first areas i would strongly suggest to take a look at , is the rear suspension , as you have a Alko chassis . Now this is a little outside my of my remit , because i have a standard Fiat chassis , so i can't help too well here .
However , i have heard of people having problems with the rear trailing arms seizing . Now going off memory , this appears to be due to a lack of grease on the pivot pins , But here i can't go much further . I would examine the upper rear arms , and try to locate any grease nipples that may be fitted . I would suspect there are two , but at the very least there should be one , somewhere in the immediate area of the pin itself . Once checked , and filled if necessary i would then ensure some new rubber grease caps are fitted , to prevent the nipples themselves seizing . But here i'm afraid i can't advise any further , in regard to what grease to use , or how to go about the job . I simply don't have that system .
It seems over here that Fiat won't touch these areas , as the chassis is not a Fiat product . So the system goes dry , until it seizes , giving a very harsh ride .
Yes i have a rear window as well , and the same problem . In the main i only use it for loading the hang gliders , i do have a rear kitchen so it's good for ventilation , but for driving , nah
