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EPDM belt rejuvenate

Discussion in 'Shop Talk' started by Shimmy1, Jan 30, 2022.

  1. Shimmy1

    Shimmy1 Senior Member

    Aug 14, 2014
    North Dakota
    Has anyone ever been able to discover something that works to soften up a EPDM serpentine belt? I have a alternator belt on an ISM that is squealing like a stuck pig and I can't get a belt until tomorrow. I know belt dressing doesn't work, I've sprayed soapy water on it and it instantly quiets down. Belt looks perfectly fine, just a little age. Any ideas that last?
  2. Truck Shop

    Truck Shop Senior Member

    Dec 7, 2015
    star gazer
    SE Washington St
    Nothing works for ailing/squealing serpentine. It's the dirt and dust imbedded in the belt. When I worked
    ag, those belts would only last one season out in the wheat fields.
    DB2, DMiller, Wytruckwrench and 2 others like this.
  3. tool_king

    tool_king Senior Member

    Mar 29, 2010
    road mechanic owner
    new jersey
    You can take piece of emery cloth put it over a paint stick long ways and let it rub on the back of the belt a bit .I have done in the passed and it worked . Also deglaze the idler pulley .
    DB2 likes this.