In this episode of Saturday Mechanic, Ben and Russ shows how to replace a flex disc on a viewer’s Mercedes-Benz. Subscribe today for more! http://bit.ly/M7fx…
How to Replace a Flex Disc
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- Tags:
Disc, Flex, replace
- Categories: Mercedes-Benz
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Whats the torque for the bolts…?….and nice video very helpful for DIY…
Why not change the the rear one at the same time in this case?
I am glad that you highlighted the fact that you needed new bolts!!! I didn’t know that when I was a kid and failed to replace a torque to yield bolt – had to get a tow home :-O
My 2006 BMW E91 with 95000 mechanically sympathetic miles, is starting to vibrate under hard acceleration. BMW dealer looked at it but couldn’t find a fault. However, from my research it’s looking very much like early signs of flex disc degrading. Pricey job at a main dealer despite the relatively easy access and £50 cost of part.
Is there any video of you lot doing the front one? I have a set for my girls car ’03 C320, I want to change both. The rear looks to be the easiest on her car.
Flex disc public service announcement: don’t wait until it’s too late. If the piece fails the driveshaft apparently destroys everything in a circular path, even cutting into the cab! Google “Failure of the Flex Disc on a 126 Body Mercedes”
how long does the flex disc normally last on the car??
Should have replaced it with a solid billet piece…
Great video. Really appreciate the care you took to make it, particularly the different angles and good lighting.
Its a W210 Mercedes E class!!
Thanks for the tip! I’ll check it out.
As I understand it, flex disks or guibos as some call them, are a European solution. More common on rear wheel drive US vehicles and most heavy duty trucks is a universal joint, or cardan joint. In your case, it could be a worn universal joint or a transmission mount. I had a truck with a similar issue, replacement of the transmission mount, which is inexpensive and fairly simple to install, fixed the issue.
A worn transmission mount or U-joint would be easy for most shops to find and fix.
Do all 4wd or RWD setups have a flex disc? If not can one be added? My truck has a similar problem when power is applied.
It’s seriously that easy? My flex disk has been awful for a while now and I haven’t replaced it because the shops say it’s fairly expensive labor. -__-
cush drive
Hello, very nice video Please make more to learn more in depth of how to fix this type of things! it would be amazing to have a vid with several common noises that a car could have..! and what they represent!
for this vid, could you feel the difference in the driving after changing this piece?
Thank youu! respect
The part on the front of the differential you marked is called a pinion shaft. The “box end” wrench you were using was actually a combination wrench and you were using the open end. I enjoy watching your videos but cringe every time you get your nomenclature absolutely wrong just thinking of the folks who don’t know better you are misinforming.
nice job. keep em coming.
The fiber reenforced flex discs usually last more than 150,000 miles. Video is well made. Thanks.
that would defeat the point of mercedes’ being well-made
You’re right, didn’t pay attention, was playing NHL 12 at the same time ) My bad.
this vid is better the many of the previous ones – slowly, you are getting better
There were no washers on the metal side, just the thriee from the rubber side. I can’t believe 7 ppl upvote this comment. Did you even watch the video?
I believe BMW call this the guibo
That would defeat the point of a flex disc.
I love these vids, entertaining, educational and meditative. Keep this up guys.
Every single car has this part…get that thru your thick heads…doesnt matter if its a benz or civic or domestic car
It would be better if they had solid driveshafts. Gotta go aftermarket for that, I would imagine.
Yeap, I completely agree. I have a lot of gripes with these cars and am not too fond of them.
Installing rubber in the drive train is nothing but bad..
Get Russ out of there. Hate that guys
How uninteresting…
No its an e-class (99-2002 or 2003) she had it in the show before to replace a front suspension spring.
Do they have polyurethane flex discs?
Napa makes a rust remover that’s $4 that will take that rust right off. It dosnt work to good on sheet metel but it fantastic on the thick stuff.
All cars have this..so you are an idiot for thinking its only for mercedes
this guy seems really feminine
The phrase is “Like a BOSS.”
Look up the part, Mercedes has it as “Flex disk”
pay attention next time…those ones didnt have washers when he tool the part off
first impact gun need servicing.
Please don’t think all Americans are idiots like this guy. I think most American technicians would have called that part a driveline damper bushing or a transfer case bushing. I don’t get the feeling from watching this video that he completely knows what he’s doing and I really doubt he is a trained technician. In fact, I half expected him to suggest that the woman have her headlight fluid changed. Just know it was painful for me to watch as well.
Why are the new bolts blue?
Just to inform you, you spelled DYI at 3:55
are the bolts blue because of pre applied locktite?