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Old 09-09-2009, 01:41 PM   #1
faredce
 
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Talking Differential....
Changed the 75-140 syn fluid in my differential case this weekend..... I noticed a lot of brass filings in the old fluid.... there is a hum coming from the truck, Ive already replaced both front wheel bearings on 2001 f150 s/c with approx 149k on it.
Inside the differential case I did not see anything "brass".... anyone tell me where they think it is coming from?
Thank you!
Bill

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Old 09-10-2009, 09:46 AM   #2
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Moved to the more appropriate place. Here you will get more insight.
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Old 09-10-2009, 11:56 AM   #3
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Axle gears and spider gears both have brass colored bushing in them, everything else is roller or ball bearings.
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