fxfymn Posted August 1, 2011 Share Posted August 1, 2011 I know that asking for help diagnosing a strange noise you cannot hear yourself is like calling the Doc and asking him to cure your ailment based on what you tell him on the phone, but I'm pretty much at wits end.The noise sounds just like a loose piece of diamond deck vibrating against the frame. It occurs primarily at higher speeds when I let off of the accelerator. I thought it was a set of bad bearings in the transfer case causing the parking brake disc to chatter against the shoes. I replaced the bearings and marked the disc to ensure it is not contacting the shoes. It is not.The u-joints are all tight and the differential seems tight. I cannot feel the vibration in the shift lever. And yes, I have checked all of the diamond plate to make sure it is bolted down tightly.The truck is an open cab, so trying to pinpoint a general area that the sound is coming from is damn near impossible with all of the road and wind noise.Has anyone had a similar situation occur? Any thoughts on the cause, no matter how random, is appreciated. Quote Money, sex, and fire; everybody thinks everyone else is getting more than they are! Link to comment https://www.bigmacktrucks.com/topic/19990-strange-noise-from-the-52-75a/ Share on other sites More sharing options...
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