Yes grease is supposed to be there. In fact if let's say for the drivers side you turn your wheel all the way to the right you will on the backside of the hub housing you will see a bolt that you remove to top up the grease. You will fill it up to the hole. You can then turn the wheel the other way and do the other wheel.

Mark

 

Hello has first view(sight) he(it) seems to me that fat is mixed with some oil on photos he(it) has can be has to see the level of the bridge(deck) there and to see has to replace the joint spinnaker of the trumpet has to watch

 

Remember not to use high pressure water to clean ball joints, discs or any other related to this area. Water in this system (grease) is no good.

 

I've seen very similar on mine and posted here about it as well. Its normal I gather.

 

Yep, looks just like mine too. I go under every 2-3 months and wipe off the grease with some paper towels, then squeeze some new grease in to zerk fittings - no big deal.

I have wondered if there is a "wiper" or seal that wears out over time permitting more grease to escape the ball joints ?

 

Yes, there is a swipe seal that can stretch or wear with time.

There is no grease zerk to fill the swivel ball. You have to remove the large in-hex plug in order to refill it.

Also, be careful to not over fill the slip joint on the drive shafts. 2-3 pumps on the grease gun maximum, or you could blow the seal and/or cause undue stress on the internals of the transfer case.

 

Any pics on where to install the grease at ??

 

Here is a picture(board)

 

What grade of heavy oil or grease should I be filling the ball joints with, using the large hexplug that is there?

 

Multipurpose grease gun grease.

 

Here is the relevant document from Mercedes (see first PDF)

If you want to get REALLY picky this is the recommended grease:

This is the seal ring, looks like a wee bit of trouble to replace (see second PDF):

 

The grease has no real lubrication function at all. It is there strictly to seal the CV joint and bearings from dirt and water intrusion. It is designed to slowly weep past the seal ring which keeps a positive flow against water and dirt ingress.

No question the seal ring replacement is a major pita. Been there and done that more than once, and it ain't fun. Also, that split seal is pretty much useless in my own personal experience. The complete circle seal really needs to be used for replacement.