DRBC43AMG

Hi peeps,
I finally threw out my Twingo from the workshop so that I can look around closely and work on T-Rex. The grinding-whirling sound has now become a low rumble which is getting louder as the days go by.
Opened the hood and took a general look in the engine bay. Hum, my special enlarged air-box (thanks George) looks like it is leaning to the left (when facing the engine). So off came the air-box to open up the overall view. The manifold which can be clearly seen without the box doesn't seem to be flat at all. Took a spirit measure and it certainly is leaning to the left.
I suspect the right engine mount is shot. What do you fellow brothers think?
I haven't investigated further as the view from the top is very limited to say the least and the vehicle is not yet on axle stands, which would enable me to look from down under and up.
Also what replacement mounts should I put in? From the CLK55 or E55 or another type?

DRBC43AMG

My ride is hard just like something else but not harsh, so I'm used to stiff rides

DRBC43AMG

So after having checked in the EPC and if I'm correct, the E55AMG comes with ID 211076 in sedan shape. There is a 211276 but that's a wagon.

Looking at the engine mounts I found:
A 220 240 27 17 front left and right
I would also need the lower fixing bolt in M8x21 # A 202 990 22 01. The one used in the 43 is shorter M8x17
The top fixing bolt in both the E55 and C43 are the same M10x60 # N 304017 010051, so nothing needed.
Heat shields are different on the E55 with # A 203 241 06 34 on both sides, so those will also be needed

Didn't find any info for the E55K model or at least it doesn't come as a separate ID

Anything else??

cm60k

Daniel,

EPC is kinda wrong with this, the bottom bolt #: "202 990 22 01", is (M8X21),

MB replaced the info. with their (EPC) version "7J/F19C",,

"55K's" mounts are really way better, and they're "plug & play" for sure..

-;ZAYED;-

DRBC43AMG

Zayed,

You've got me confused

Where do you find info for the E55K? I didn't find any difference in the EPC from the regular E55. Are the mounts for the E55 and E55K the same? If so this would explain that nothing different appears in the EPC between the two models.
Regarding the lower fixing bolt (M8x21), I was saying that I needed this specific # to replace the one from the C43 which is too short (M8x17).

Thanks bro
D.

cm60k

No need to be confused mate,

lower bolt is (M8x21), not (M8x17), EPC wrong typo..!, don't worry about it,,

55K mounts are more stronger & stiffer than N/A "55",,

A) N/A 55;-

*old#: "202 240 44 17"

*new #:"202 240 49 17"

B) 55K;-

*old#: "220 240 20 17"

*new #:"211 240 19 17"

-;ZAYED;-

DRBC43AMG

Zayed,

Now things get even more interesting....

When I plug in the new E55K # 211 240 19 17 you indicated in the EPC, guess what come out? A 211028 or E400CDI OK that can be understandable as the diesel is probably way heavier
When I plug in the old E55K # 220 240 20 17 in the EPC, nothing comes up. Weird as it should say replaced by #xyz

What is going on?

DRBC43AMG

Lifted the front on axle stands so I can take a look at the engine mounts from under.

The left support (second photo) has some brownish stains above the mount. From what I recall in other threads, this is a sign of a leak but I thought they were solid rubber.

The right support is perfectly dry, even if both mounts look compressed.

I lifted gently the oil pan on the right side and the engine came up a good bit (2-3cm), but I didn't go higher. There was a clunk at a moment as if something became free

cm60k

Sure Daniel, some of the part #s will not show up, depend to the (EPC/ECI) version,,

"220 240 20 17", replaced by "220 240 25 17", replaced by "220 240 27 17", replaced by "211 240 19 17"..

-;ZAYED;-

DRBC43AMG

I'm trying to get paying access to WIS for a short period, so that I can pull out the info on how to change engine mounts. Unfortunately I am unable to get into the system so have written to Daimler for help. Awaiting a reply.

Until I get a reply from Daimler, does anybody have an idea how to remove the top bolt from the mount without removing the exhaust manifolds? Is it even possible without the manifold removal as space up there is very limited

DRBC43AMG

I've checked and my software version is 2.5.4.3 with data status DW 08/2018 (4.8.0.0) whatever all that means...

cm60k

Don't bother yourself with EPC versions mate, they're multiple firmware's, depend to the countries software spec.,

if you need normal not that stiff, go with any "M112's/M113's",,

but if you need more stronger/stiffer, just get "55K's" mounts..

-;ZAYED;-

DRBC43AMG

I certainly will go down that route Zayed

I may just need to convince my friend the parts specialist at the local MB dealer that these are plug and play parts if he finds something to say about this

cm60k

Ah, i seeeee,,

just let us know what he will up to..

-''ZAYED''-

vinceC

The mounts aren't that hard to change. Access to the upper bolt os difficult but doable. I use the closed end of a combination wrench on the uppers. The closed end should be angled. You might have to place the wrench on the bolt, then use a bar to pry against the wrench to break the bolt loose, but after that it is fairly easy. Oddly, removing the driver's side mount from the car is easier on the C43 than it is on a C280. The mount can be removed by going forward past the A/C Compressor. Jack up one side of the engine at a time. Be careful, only raise it enough to slide the mount out. Be careful with reassembly. The heat shields have a "key" that needs to be located properly. It helps to have a good mirror.

DRBC43AMG

Thanks for the tip

DRBC43AMG

Disaster has struck

Looking closer at the right hand engine mount, I've now seen that the engine block support is broken. Is this going to be an engine out operation to replace as the top bolt is totally hidden behind the rubber mount.

Could this have been caused when I lifted gently the engine 1-2cm yesterday and heard a clunk? Just checked the photo taken yesterday (see above post) and you can see the cracked part and that was before I tried lifting the engine on the right side. So this is certainly 99% sure the noise comes from. Thankfully I never did any WOT accelerations since first hearing the noise, as the damage could be worse

Now perhaps if I remove the engine mount I will certainly have access to the top bolt

vinceC

I seriously doubt that you broke it - more likely it was broken and you were hearing the broken parts rub against each other. Or maybe it was cracked and this was the final straw.

t would try to jack the engine to get the load off. Then I would remove the motor mount. I think you will be able to change the broken support then. Make sure you have plenty of clearance under the car - it makes the job much easier.

I've done these on my son's C43 and all of my many M-B over the years. The C43 was one of the easier ones.

DRBC43AMG

All in it took me 10 minutes to remove. Unscrewed the 3 screws holding the broken engine support bracket first. Easy.

Found however that the fourth screw at the top with the most difficult access was sheared off. Unfortunately the broken thread part inside will need some extraction work. Hope I can get a short drill piece inside to make a smallish hole and then screw a reverse extractor. That's work for Sunday as I'm busy tomorrow. Fingers crossed.

The rubber engine mount just came out easy after unscrewing the bottom holding bolt.

Also found the heat shield also had a AMG stamp with # A 202 241 0734

Thinking about this problem, I now recall that a couple of weeks ago, driving on a badly surfaced mountain road (they now all seem to be like that around here due to reduced budgets), I misjudged the height of a trench laying across the road which had been made worse by water run-off. I remember having hit it rather hard. That probably cracked and weakened the support and over time it broke completely.

cm60k

Waaaaaa, sorry to hear that Daniel, this mount bracket is kinda tough..,,

i remember; Right bracket always sharing with "M112" families, while Left one comes with "M113", isn't..?!!!?

DRBC43AMG

I have no idea. I'll check later in the EPC using the part #

DRBC43AMG

Copied the # A112 223 1504. So it looks like a V6 part 😉

cm60k

Yes, correct, "112 223 15 04" is old #, it's replaced with "112 223 37 04"..

-;ZAYED;-

DRBC43AMG

Ok thanks 😎

DRBC43AMG

So I've changed the broken alloy engine holding bracket and both engine mounts with W211 E55K ones https://mbworld.org/forums/c36-amg-c...r-upgrade.html
The front end feels definitely more planted, but unfortunately the rumble is still there, but only when I let off the accelerator. Accelerating gently or hard = no noise.

Could it be the U joints, or rear diff, or transmission related? I get the impression that the sound is coming from the passenger footwell. I've checked heat shields, exhaust brackets, etc and found nothing wrong.