Went into Konecranes but you have to register and then they email back asking all questions about your company etc.Too much hassle, so I just stripped the hoist to the bare frame and its now all painted up like new now.
The actual chain hook swivels with no obvious means of checking the bearings, but there is a small grub screw on the side that is tack welded in place. I assume that this is where the ball bearings are fed in to a groove in the hook base. There is no play there, so I will leave well alone and just pump some grease in.
Now I need to clean the chains, which have just slight surface rust. (Not deep, but can be removed with a wire brush, more of a brown stain than rust as such.) Any way of removing it by dropping the chains in a bucket of a certain liquid ?
Mike.