4-Matic front CV boots replacement PICTORIAL




Mine inner boot on passenger side did show some grease, so I had to "break the ice" and get on it.
I did several boots on VW and W210, but W211 is a bit different and harder.
First, I bought boots at autohousaz as those I install on my brother's W210 over 2 years ago work well,
But when W210 boots come German-made, the W211 boots had no marking on them at all. The only word were on grease tubes that say "Made in Italy"
But those boots turn a junk. They were made from very stiff material, that having no clear grooves on the end would not hold on joints flanges too well, while soft clamps turn weaker than the boot material, who on turns would stretch the claps and whole thing would open.
DON'T BUY THAT STUFF !
MB boots cost me $112 at wholesale (sometimes it is good to befriend the part person) so the cost is not that bad.
What makes them different from other boots is that inner boots comes with aluminium sleeve attached and the clamp on boot is factory made.




I removed the wheel to knock the cap from the inside, than put 3 bolts back, lower the wheel on the block and put my breaker bar on it.
Don't have big torque wrench, but my 200+ lb body on 16" bar made about 225 ft-lb. That was the force to break the bolt loose and that was the torque I put new bolt in.
I lifted the car by front center point and left the key in ignition, so turning the flange and axle was easy.
Last edited by kajtek1; Nov 10, 2015 at 06:09 PM.




I don't have puller of this size, so old-fashion hammer stroke did break the joint loose.
I also disconnect sway bar link.
Last edited by kajtek1; Nov 10, 2015 at 06:43 PM.




It was frozen and hard to access. Pulling it with vise-grips did not work, so I finally cut and chiseled it out.
It is aluminium sleeve over steel housing, so cutting is relatively easy, but be gentle to not score the housing.
After cleaning, replacing the oring the new sleeve with boot slid on quite easy.




It is slide-in with spring clip connection, but for some reason on this car the fit was pretty tight.
I had to hammer it pretty long.
There are 2 ways to do it.
1- insert 3/8" wrench extension into the axle hole and keep hammering.
2. slide the boot from out and while holding the shaft at outer joint in the air, find the angle where you can hit the inner "spider" with a hammer.
Brass hammer is recommended.
Once you have the outer joint removed, clean old grease, leave the outer joint on the bench and take the shaft back to the car.
I put almost all new grease inside the inner housing, slid the shaft with inner boot from the back of shock fork, put the bearing on the inner joint and put the assembly into the housing. Once it there, I add some grease on the top of the inner joint.




After finishing the inner joint, slide the outer boot on with clamps on it already, put grease inside the outer boot (why the grease has different color?) and tap the joint back on the axle.
Before putting the boot on , tilt the joint make sure it is all the way in.
Last edited by kajtek1; Nov 10, 2015 at 06:48 PM.
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After some driving I noticed that it is coming out of CV joint and spill some grease around.
Spend over 1 hr with long pry bars to bend the sleeve into mushroom.
Don't know how MB does that, but the inner CV joint has no access from the sides and you can only work on it from the side hole.
Bottom line, I did replace boots on W210 in about 45 minutes per axle, this one with the cheap aftermarket boots and then redoing the job with MB boots cost me well over 10HR. Mostly becouse of access.




The Chinese axles are not long lasting, but several members installed them on W210.
I would rather clean the old axle, inspect the joints and put it back with new boots and grease.
This is what I did in brother's W210 who I bought for him with torn boot. He made over 30k miles on it since. I made full pictorial about it on other site. German boots for W210 were $40 per axle.
Last edited by kajtek1; Mar 17, 2016 at 11:25 AM.
My mechanic told me if I want to go with the reman axles, I can just drive the car till it shows symptoms haha.




Since you are posting here, I assume you DIY to some degree. This is definitely a job where it would pay big.
Also I had very bad experience with aftermarket boots on W211 as I wrote above.
Since you are posting here, I assume you DIY to some degree. This is definitely a job where it would pay big.
Also I had very bad experience with aftermarket boots on W211 as I wrote above.
I can do some electronic diy and simple stuff, but anything underneath the car besides oil change I would bring it to a shop.




I think the quoted $120 is new axle form China, but regardless they don't have good reputation.
Buy it and report back in a year?
One report says that reluctor rings from China had problem working on W211, but that will be obvious right after installation.
Plus there might be damages in the axles and a new boot wont fix. Overall I think getting a remanufactured cv axle would be a much economical and easier solution. My shop said they will warranty the axle even if the parts were not directly from mercedes.
Last edited by butter123; Mar 17, 2016 at 02:07 PM.




the "rebuild" is one of the most abused term here.
In CV joints case, most of the time it means new boots and grease. Some rebuilders claim to grind the seats and put bigger *****, but that means they grind off surface hardness and now seats have softer metal.
But think about it. New boots cost $112. Even bought in bulk they can be bought cheaper, consider shipping, sale and advertisement cost.
That leaves basically no money left for any physical work ... if that in fact is reused MB axle.
When something sounds too good to be truth......
That means they get my old oe axle for only $20 and put on their own boots, joints, or whatever it's bad in them.
I understand it's skeptical to think a $1000+ part would only cost 1/10 of the original...
Only one shop in my area would do the reboot for my inner and outer cv joint, even they recommend going with a remanufactured axle.
If there is no remanfactured option and the only option was to buy a new axle from the dealership, then hack yes, the reboot option is a no-brainer.
If you're wondering how to properly (special tool) remove the entire axle half shaft the MB tool# 203 589 03 63 00. Or you may try and use this method: http://www.pelicanparts.com/techarti...eplacement.htm
In addition to what has been posted by kajtek1 I'd like to add that if you're just doing the outer CV boot you only need to loosing the axle bolt and steering knuckle at the lower ball joint. Then use a floor jack to help keep knuckle out of the way. Once the knuckle is out of the way take that same axle bolt and reinsert it into the axle (IMPORTANT: be sure the CV joint is parallel to the axle as though the vehicle is sitting on all 4 tires) and slowing began to tighten the bolt. This will slowly separate the CV joint from the axle without the risk of damaging it with a hammer (if a hammer must be used as stated above be sure it's a brass one).

The silver circle in the middle of the CV joint is the end of the bolt.




Pelican site shows different box, when I remember W211 is not giving you any access behind inner joint.
Since posting I run into pictorial, where hobbyist bought 1" wide aluminium strap at Lowe's, bend the ends and with 1 end clamp to the inner CV joint, he used huge socket as sliding hammer to hit bolt mounted on the other end of strap.
Pretty ingenious and bulletproof.
Pelican site shows different box, when I remember W211 is not giving you any access behind inner joint.
Since posting I run into pictorial, where hobbyist bought 1" wide aluminium strap at Lowe's, bend the ends and with 1 end clamp to the inner CV joint, he used huge socket as sliding hammer to hit bolt mounted on the other end of strap.
Pretty ingenious and bulletproof.
I did mine today but was unable to remove the inner piece and had to rebuild with it on the car. I'm not sure how well it really went back together and expect there is at least a chance I'll end up replacing the whole axle..





The problem with changing inner boot on the car was with mushrooming the aluminium sleeve and would I do it next time, I would rather build the tool.
The only difficult thing I have seen in this method was manufacturing clamp that would hold the strap on inner joint body.
Than on different site I have seen owners fitting C bolt on it.


