I had a diff boot fail and destory a CV joint almost instantly while going 75 MPH on the interstate a year and a half ago. I had it replaced by the dealer at considerable cost.

The new style has what looks like reverse 5-point star (so youd need a funny shaped 5 point socket to get them off) in the area where the actual joint and boot attach to the flange on the diff. Around two of those bolt points there is some sort of thick black grease seeping out. It looks like the grease gets flinged often, as there are traces on the body at all points in a line around where the bolts are.

Is this 'semi normal'? Are the new style MB CV joints and axle shafts servicable? As I recall the older ones werent servicable, nor could the boots be changed. Is there somethiong that would cause this, like driving too fast (which for this car is continuous driving at 80-85).

Is there a way to slightly open the cv joint and squeeze some CV joint lube in there without having to remove the boot or change it?

If I wanted the dealer to look at it, tighten it and add cv grease-fluid into the boot, what would be my best bet for getting them to do it? Dont MB parts usually carry a 1year warranty? Ive had mine for 1.5 years and around 30k

Like my diff question, are the cv joints that sensitive to grease level? I drive 80+ miles a day, most on the interstate with no issues. I just dont want to end up with a dead half shaft again after the price I paid last time.

Any info or help would be most appreciated.
Thanks,

JMH

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Current Diesels:
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