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Front end grinding?

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Old Jul 7, 2007 | 02:00 AM
  #1  
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Front end grinding?

Ive been having a grinding in the front end. I'm pretty sure its in the breaks but cant find whats causing it. The grinding will only start after running the truck for 20+ min, and only while making turns. I replaced the pads the other day and the rotors look good. and the calipers are both new. Could the hoses be the issue, or bearings in the hubs?? I'm not sure what to do??

Thanks for the help
 
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Old Jul 7, 2007 | 07:49 AM
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I'd start by jacking up one front wheel at a time (using all safety precautions, mind you!) and rotating that wheel. Try to wobble it on the hub to check for bearing tightness and integrity. Perhaps get a partner to lightly apply brakes to see if it is brake noise you are hearing.
I'll guarantee you don't want your bearings to fail as it is a costly repair if the hub is damaged. Please don't ask how I know this.
 
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Old Jul 7, 2007 | 09:39 AM
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ckal i'll take your wisdom on this one, ill try that today. I know the outer bearings are good, i just did them when i went to a manuel locking hub the inner ones might be the broblem though. Thanks
 
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Old Jul 7, 2007 | 09:40 AM
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Is the truck 2 wheel drive or 4 wheel drive? If it's 4x4 could be a hub stuck enganged. Also, does it change when you hit the brakes?
 
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Old Jul 7, 2007 | 09:41 AM
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we most habe posted at the same time, make sure the hubs are letting loose... jack the truck up and spin the wheels, checking to make sure the axle shafts don't spin at all. Also is it a 350 or 250?
 
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Old Jul 7, 2007 | 09:43 AM
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Its a 4 wheel drive, and it dosent change when hitting the brake. At first I though hubs to but after i changed the auto to maunals the grinding still persisted. Its not all the time its after the truck has been used for a bit, I'm thinking after the brakes get warmed up.
 
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Old Jul 7, 2007 | 09:48 AM
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See I was thinking a stuck hub could cause the front diff to heat up after you drove a bit. Usally with brake noise it will change when the pressure is applied. If it is a Dana 60 you also have bearings on the inside of the spindle for the axle shaft that can wear and cause noise. I had that problem. Grab your axle shaft inside the knuckle and try to move it around, shouldn't have much play in it.
 
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Old Jul 7, 2007 | 04:10 PM
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I have a 99 Expy with sealed front hubs. Other than noise when the hub bearing is shot, is there any way to tell the condition of the hub??
 
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