I have a new Caravan fitted with a Winterhof Hitch, should it have a long neck towball as required by my old van's Alko Hitch or should I use and can I use an ordinary type towball.
Big Al, go to www.bpw.co.uk/PDFs/Winterhoff%20Spare%20Parts.pdf There is a photo 2nd row down on left which shows the complete kit including 4 shims of varying thickness. RayBig Al, It appears to me that you have the incorrect, or no, shim fitted between the coupling and the 'coupling rod - sorry can't think of correct name ' on the van.
The hitch is supplied to be fitted to vans / trailers with 'coupling rods' of differing diameters and aprox 6 shims of varying thickness are supplied. The correct one is fitted over the coupling and then the winterhoff over that. It must be a tight fit otherwise you get the results you indicated. You can tighten up the two bolts to your hearts content but a few miles towing and the free play will, become evident again. With the correct shim fitted it is a very solid coupling with no play.
Isee from Rod's posting that the correct name for the 'coupling rod' is the 'Draw bar'.Big Al, It appears to me that you have the incorrect, or no, shim fitted between the coupling and the 'coupling rod - sorry can't think of correct name ' on the van.
The hitch is supplied to be fitted to vans / trailers with 'coupling rods' of differing diameters and aprox 6 shims of varying thickness are supplied. The correct one is fitted over the coupling and then the winterhoff over that. It must be a tight fit otherwise you get the results you indicated. You can tighten up the two bolts to your hearts content but a few miles towing and the free play will, become evident again. With the correct shim fitted it is a very solid coupling with no play.