Repair Tech Tuesday Video: How To Check Chain Wear By Video Share May 26, 2015 Tech Tuesday! #TechTuesChain wear Posted by Park Tool on Tuesday, April 14, 2015 How to check chain wear, from Park Tool. Share This: Tweet Video Share These are videos that the Singletracks Staff has collected from around the internet and have deemed worthy to share with you. Subscribe! Enter your email address to receive our top stories via email each week.