I had a problem with the Pinion Seal twice, it was leaking fluid drip by drip. I had the seal replaced both times by CarMax where I purchased it. That was around 45-50,000 miles, it now has 99,800. Haven't seen any fluid on the driveway or garage floor since. How do I tell if it is a Wheel Bearing or Pinion Bearing? Could it be coming from a Driveshaft U-Joint? There is no clunking when put into gear, but at 50 or 65mph, if I take my foot off the gas and then back on I hear a definite clunk. Thanks for any help.
Could be a u-joint
I would say since you lost fluid some time ago with the other
issue,that the wheel bearing or both axle bearings ran dryer
than they should have for too long
I would do both axle bearings & pull the rear diff,wash out the housing & at least visually inspect the gears, etc & make sure
you use the correct gear oil & go with synthetic
The drive shaft is your call
That is not an expensive repair, but they should be balanced
The increasing noise would be an axle bearing
The whine the differential bearings
The clunk the drive shaft ,more so than the diff
If it was mine-- I would do the drive shaft,axle bearings &
diff bearings in one sweep & be done with it
BUT your paying someone
I'm just buying parts wholesale & doing the work,
other than the balancing of the drive shaft
When you do a pinion seal your not replacing the crush
washer inside,thus the repeat problem,fluid lose & now
worn parts that should have been avoided
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