While standing at the back of the 6640 when removing the transport pin on the tedder I happened to pass my view past the lift arm on the right side which has the adjuster levelling box at the bottom for setting the right lift arm height. The box is screwed together by a 45mm threaded cap which carries the full weight of the lift arm. What my eye caught was that the cap had slipped out of its threaded housing on one side by a few threads and I decided to investigate. Sure enough the locating grubscrew that prevented the cap from unscrewing had come loose and the threads had become damaged. New parts ordered but wasnt impressed on how fine the threads on the cap were, same with the original toplink which got loose quickly. Lucky for me this didnt part company with a big load on board while on the road.
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