Rear driveshaft slip yoke.
Does anyone else have a problem greasing theirs? If I grease mine with the zerk fitting, grease will go in, but never oozes out anywhere. It tries to extend the driveshaft instead! Last time I had to remove the shaft and clean out the excess grease so that the slip yoke would actually compress/extend properly. I have posted about this before with no real solution/advice. Most shafts have a little relief hole in the yoke or else enough clearance in the splines for the excess grease. I wonder if my driveshaft is a factory defect. I'm glad I noticed what it was doing....if I had driven it with all that grease in there without the slip yoke working, during normal suspension travel it could have sent the driveshaft through the transfercase or at least cracked it.
Jerry
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