26-02-2021, 10:27 PM
I suggest that without a spring, which is how it appears in the parts list, the nut should be fully tightened and then slackened by a 'notch' before the split pin is inserted. It does not show clearly in the list but the bolt is a special and is waisted so that the radius arms and cups can rotate a bit on the ball, with the cups and arms being a close fit on the full diameter parts of the bolt. You rarely find the correct bolt in my experience of dismantling these. David Cochrane and probably other cherished suppliers do have the right bits and can probably advise you more specifically.