Thursday, Jun 07, 2007 at 08:33
Hi Wizard. The brother-in-law had the exact same problem that you describe.
I was there on several occasions trying to uncouple the van - damn frustrating.
Turned out to be the size of the ball.
There was a date at which Hiland changed their coupling size - not by much mind you - but the change created the 'too tight to get off' problem.
The date of the van was close to the date of the change - so even the van manufacturer didn't realise the mismatch.
The owner of Highland also lives in
Brisbane, so actually came around - identified the problem and supplied the new ball. Nice of him - Problem solved.
Also be aware that the Highland coupling can turned the WRONG way.
Bit hard to describe, but here goes : You can rotate the shaft 180 deg in the horizontal, AND then swivel the socket 180 Deg vertically. This LOOKS almost the same as before, but the steel frame around the ball is upside down, and it is NOT symetrical. It will hold the ball up - though the weight of the van may be enough to force it on - and again you will suffer grief trying to uncouple the unit. Recognizing that little puzzle was a bit like solving Rubics cube :)
........Hope the above gives you a plan of attack.......Keith
(nb - I use a Tregg.).
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