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2000 E430, 2004 C320
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Discussion Starter · #1 ·
Driving my E430 at about 70 miles an hour and every red light on the dashboard came on. Took me awhile to get it to a stop. Upon examination the front end look like a disaster. I had it towed home and then after assessing the problem I noticed that the harmonic balancer was wrapped in the serpentine belt. The camshaft Bolt was nowhere to be seen. Here's my question the car has 275000 miles on it and carries my heart, is it worthwhile to buy another Bolt an attempt to put her back together again?
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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If all it will take is a bolt and a new belt, certainly worth a try! You will know better, but maybe some other stuff was damaged at same time?
What would cause that bolt to come out? Did in unscrew completely or shear off? Knowing cause of that might be important in determining whether to repair or not.
Engine swap may be an option, but maybe buying another and keeping yours for parts another.
 

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Outstanding Contributor , SDS Guru
1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG
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How does the bolt simply fall out? It's torqued to 200nm and then 90 degree after that.

Did you or somebody turned the engine counter clockwise?
 

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Dallas, Texas
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To the best of my knowledge nobody turned anything.
Clean up the mess, remove harmonic balancer and examine its keyway. Examine key and condition of crankshaft nose.

Any work prior on balancer, front crank seal?
 
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93 SL500, 95 SL320, 96 S320, 98 S500, 2002 E320 4Matic Wagon & A little 91 5.0 FORD Mustang
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Post a picture of it here from the face to see if the inner portion did not slip from the outer portion, or go to your local junk yard to get one.



A harmonic balancer does not just fall out unless the rubber falls out, and the cold in New Hampshire along with the road salt could do that... take the whole thing off-balance....

Their is a place out west that rebuilds them if you do not find any at the local junk yards.

Martin
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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Not sure if the ones here are like the MB balancer, but learned something anyway!

 

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1996 SL500, 2000 E430
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I think when the M112 came out they had a recall for the harmonic balancer. Maybe it was for both the M113 and M112.

I think they improve the design but it always makes me wonder if mines going to come apart. It’s designed right you shouldn’t have to worry about it

IIRC The dealer inspected ours and it was fine from new for the 2000 E430.
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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I think when the M112 came out they had a recall for the harmonic balancer. Maybe it was for both the M113 and M112.

I think they improve the design but it always makes me wonder if mines going to come apart. It’s designed right you shouldn’t have to worry about it

IIRC The dealer inspected ours and it was fine from new for the 2000 E430.
You are right, there was a recall. Funnily enough, I don't recall getting a letter or getting it checked or replaced. I will have to go through my records. Perhaps the dealer checked it during a service. Looks like the notice came out in 2005: These are from Peachparts, but probably covered here too.


 

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1998 e430
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i was surprised to get a letter from my local dealer regarding that recall.

even more so when after the work was completed, an invite to a piano concert at the dealer?! apparently, steinway and mercedes go way back...
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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This is the recall notice sent to dealers. My 98 falls in range of VINs affected. I never received a letter and dealers didn't mention in this during services at about that time. Perhaps it did not apply in Canada? Any Canadians here know?

I tried to find the part number using my camera. No luck with that yet and pictures are of poor quality. I will have another try. But the pictures I got are of some concern. See the cracks, especially in lower picture. What do you think?

2690741


2690742


2690743
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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look higher....see the timing markings on top of the pulley assembly? now scan to the left, around the 10 o'clock sector on the outer perimeter of the pulley
Thanks Raymond. The picture in the recall had me confused! I should have gone and checked the stickies first :oops:

Do you or any other experts here have any comments on the cracking shown in the pictures below?

Oops - Looks like I have one of the bad HBs :( My VIN is in affected range too.(A476296)
2690855


Overview of HB doesn't look that bad...
2690856


But, closer up the cracks show
2690857

2690858

2690859


2690860


2690861
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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Q1: Have any of you done this job yourselves? I am interested in what DIYers used for the "counter holding tool".

Q2: Do the new versions need the hex head bolt? Recall instructions say existing (socket) bolt can be re-used.

My guess is that this recall may not have been offered in Canada? My car was at dealers in Canada and US several times after the recall and nothing noted about this recall or the HD. (They did for other recalls/issues). Any Canadian here who could shed light on recall?

2690819
 

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Discussion Starter · #17 ·
Negative. I have owned the car for 8 years and the crank bolt has never been touched.(that I am aware of.)
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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Negative. I have owned the car for 8 years and the crank bolt has never been touched.(that I am aware of.)
Did your crankshaft pulley (HD) separate between the outer and inner metal parts? In other words, the rubber failed? Seems that is not an uncommon failure.

Sorry to butt into your thread, but perhaps my research might help you and others.

What I have found so far, is that aftermarket replacements are inexpensive. Names like Corteco, Rein, Dorman. Some well under $100. OE Mercedes parts seem to be in the $250-$450 range. Part number seems to be A1120351300 or A1120351400. Replacement bolt is A0069907004.

Hard to find meaningful reviews of the aftermarket units. On Pelican the only 2 reviews for Corteco were poor (they were older) Yet Corteco is usually a reliable supplier.

I am interested in the experience of others on how they did the replacement and which parts they used.
 

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1998 MB E300TD, 1997 MB E36 AMG, 2001 MB E55 AMG
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I haven't replaced it myself, per se, but according to what I remember, the crank bolt should also be replaced. It is a weak spot.

Special tool needed to hold the crank pulley, if you have an Audi crank pulley toll, that might work for you.....

You'll need a massive breaker bar and cheater. It's torqued to well past 200nm (198ft lbs).

Luckily the crank bolt is not a timing tool -- in other words loosening the crank bolt does not result in timing going out of timing, so it's straightforward.
 

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'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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I haven't replaced it myself, per se, but according to what I remember, the crank bolt should also be replaced. It is a weak spot.

Special tool needed to hold the crank pulley, if you have an Audi crank pulley toll, that might work for you.....

You'll need a massive breaker bar and cheater. It's torqued to well past 200nm (198ft lbs).

Luckily the crank bolt is not a timing tool -- in other words loosening the crank bolt does not result in timing going out of timing, so it's straightforward.
200NM is 147.5 ft.lb - My marine diesel headbolts required 120ft.lb. I did that in a restricted engine space on a sailboat, but using a longer wrench than the HF click types (which wouldn't do the job). Should be possible, perhaps with an extension. But then they say apply an extra 1/4 turn. That my be harder! Is that where the 198 ft.lb came from?

Not sure how exactly this would be done. The crank holder tool would presumably need to supported while you pushed or pulled on the breaker bar or torque wrench. Maybe take lower engine cover off and support it off the floor.

I'm still not sure my HB is bad enough to have to be done. But still having the original recalled original unit makes me want to do it.
 
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