Series 60 A/c Belt with teeth
Jim K: This is a SWAG or a hunch at best. I recently experienced a terrible, terrible noise coming from my engine when I fired up the engine while in Hotlanta the other day. We had been dry camping the night before and had shut the engine off with the OTR bus air still on. Due to the air regulator leak over the engine door my belt air bags (bellows) loose their air pressure overnite. As a result the air was down in the bellows that tighten the belts and the bus air was on so when I fired up the engine the belts were not exactly slipping but skipping on the pulleys making a terrible noise. jerking, and possibly knocking off some teeth. I immediately shut off the engine and a/c and inspected the belts and yes they were too loose. I fired the motor again with a/c off and let the air build in the bellows and then all was well. I since ordered a new regulator and three new bellows from prevost (on Sale for 25 lewbucks each). Will install this weekend. Check it out on yours and see if the belts are tight from a cold start. This is still no answer as to why the a/c belts have teeth. I even bought new ones with teeth for spares. I would still like to know whey they have teeth.
Roger that!
2008 Liberty DS XL2
2023 Denali Ultimate
My 6th Prevost