I noticed last night that the chain portion of the chain/cable loop on one of our 15 year old Craftsman garage door openers rattled against the rail when the door was moving and when the door hit the down limit and stoppedthe chain was drooping a little bit over the edge of the rail.
I'm assuming this is due to chain wear and/or cable stretch over the years.
There's a threaded tension adjustment where the cable joins the carriage, but I'm not sure if there's a "right way" to determine how much to tighten it.
Do I just tweak it tighter until the chain stands proud of the rail at all times?
Thanks guys,
Jeff