Engine off. Compare the amount of force required to turn the fan, cold engine vs really hot engine (need to read service manual to find the fan engagement temperature). Should be a higher force, should be noticeable increase in air flow noise with engine running.
Not very scientific, but will help identify a totally dead clutch. -- Max Dillon Charleston SC '87 300TD '95 E300 On April 3, 2016 6:54:18 AM EDT, Dan Penoff via Mercedes <mercedes@okiebenz.com> wrote: >Subject says it all. I want to test the fan clutch on the 94 S420. > >I'll be Googling, but though I would solicit input here as well. > >Thanks, > >Dan > >Sent from my iPad > >_______________________________________ >http://www.okiebenz.com > >To search list archives http://www.okiebenz.com/archive/ > >To Unsubscribe or change delivery options go to: >http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
