Belt squeaky sound
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Trailering
Joined: Jun 2024
Posts: 16
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Belt squeaky sound
A while back I discovered a squeaky sound come from where my serpentine belt is. Not to long ago, I had replaced the water pump and belt tensioner. Replaced the belt tensioner because I thought maybe the squeaking would stop then. Also replaced two idler pulley bearings as well. Serptine belt was replaced about 5k miles ago. And the squeak still continues to this day. Not sure if it's other pulley bearings or what? Any one have any suggestions? Fairly new to diesel engineering but I'm learning every day, go easy thank you🤝
Hotshot
Joined: Dec 2014
Posts: 17,828
Likes: 3,113
From: Jersey Shore
Relieve the tension on the best and start it for a few seconds to see if the noise is from the belt.
Also, if the water pump pulley is too polished, it can sometimes slip. The surface can be roughed up with coarse sandpaper.
What brand of belt are you using?
Also, if the water pump pulley is too polished, it can sometimes slip. The surface can be roughed up with coarse sandpaper.
What brand of belt are you using?
Tuned
Joined: Jan 2010
Posts: 302
Likes: 14
An old hot-rod trick which works well for squeaky belts is to soak your belt in some armor-all. My belt used to squeak, I spray armor-all on the belt when it's running and also spray it down when the truck is off. My belt never squeaks anymore, granted the belt is the source of the noise.
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