There are many causes for a squeaking outdoor swing such as rust, extended use and debris. Despite this, however, a clear method exists for removing the all-too-annoying squeaking that will inevitably occur with outdoor playground swings. Removing this squeak is an easy process that any owner can perform in little time.
Wash the metal chain and clasps to which the chain connects. Simply spraying it clean with a garden hose will work well.
Dry the metal chain and connective clasps with a towel.
Spray the WD-40 lubricant over the body of the chain and connective clasps.
Take care to ensure that all areas where metal pieces meet are completely covered with WD-40. This lubrication and cleaning will ensure the squeaking stops.