Apart from the genuine Alko jack that came with this van, I always carry my trusty 1 tonne hydraulic bottle jack & always resort to that first, it's neverletme down & it saves winding handles
Like your T@B, all Eriba Touring caravans use a custom AL-KO (or BPW) chassis - and for historic reasons - the Eriba has a side-lift point welded onto the custom chassis:
Brilliant - except that style of jack, popular in the 50's and 60's - is a real ****** to find now - and hence the factory deletion of the jack point in 2007...
So most Eriba owners will use a lightweight scissors or bottle jack - with a "U" shaped cup to cradle the AL-KO axle. And I'd suggest the same idea to you...