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-   -   Noblemercedes warning: Change Turbo Inlet Seal every time disturbed (https://sprinter-source.com/forum/showthread.php?t=48673)

Aqua Puttana 07-05-2016 02:56 PM

Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
1 Attachment(s)
Thanks goes to Noblemercedes. :thumbup::thumbup:

Official Information from Mercedes.

NCV3 OM642 V6 Engine

Quote:

Originally Posted by Mercedes Document
NOTE: The clean air line seal to the turbocharger must be replaced each time the connection is
released. Deformed or damaged boots must also be replaced.

The original thread is here.

Turbo inlet seal bulletin

http://sprinter-source.com/forum/showthread.php?t=48553

Attachment 77752

vic

A MB tip for proper installation. Thanks goes to Mikeme.

Quote:

Originally Posted by mikeme (Post 652641)
"the seal needs to be worked into place into the female plastic part"

This, I think was the source of my problem. [Seal dislodged and damaged turbo.]

I got my hands on some (probably bootleg) MB tech data, and there is a note:

The sealing ring must be inserted into the air intake hose first, to ensure that the sealing ring is not crushed. Parts of the crushed sealing ring may otherwise be sucked into the compressor wheel of the turbocharger severely damaged.

The raw text from the PDF above.

"Date: April 6, 2013
Order No.: V-B-09.00/01
Supersedes:
Group: 09
SUBJECT: MY-All, Model 906 with Engine 642
Operations in Clean Air Line Area
When working around or in the clean air line area, or when replacing it, the seals and boots for the
clean air line must be checked for damage or incorrect mounting.
Damaged mounting can lead to:
• Engine diagnosis warning lamp lights up
• Engine has low output, switches to limp-home, emits blue smoke
• Damage to turbocharger
• Engine damage

NOTE: The clean air line seal to the turbocharger must be replaced each time the connection is
released. Deformed or damaged boots must also be replaced.
Incorrect mounting will result in complaints about engine running characteristics.
Under certain circumstances, damaged or deformed seals on the clean air line can allow dirt and
foreign matter in and damage the engine.
The specified torque of 3Nm for mounting the clean air line to the compressor section of the
turbocharger must be followed. In the event of a complaint, check the seals and boots of the clean
air line for correct seating and signs of damage. Always document these instances with pictures.
Warranty and goodwill claims for engine damage that has been caused by incorrect mounting of
the clean air line, will be rejected.
When working on a vehicle where the clean air line/air filter box needs to be moved, do not rotate
the clean air assembly while affixed to the turbocharge. This will damage the seal on the
turbocharger. Ensure that the clean air assembly is removed completely."
This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data Control, and
MBUSA-SLP S424HH001, Control of Quality Records

Jchirchirillo 07-08-2016 04:01 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Really sad when you get this important info here rather then from the source..

Tooth Fairy 07-08-2016 08:25 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Jchirchirillo (Post 470663)
Really sad when you get this important info here rather then from the source..

Yes and no, at least you get it, not like the olden days before the internet...... :cheers:

Boxster1971 07-08-2016 04:49 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Tooth Fairy (Post 470693)
Yes and no, at least you get it, not like the olden days before the internet...... :cheers:

But the vehicles "before the Internet" where also less complex.

Tooth Fairy 07-08-2016 10:23 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Boxster1971 (Post 470739)
But the vehicles "before the Internet" where also less complex.

True.

CaptainKraemer 07-13-2016 06:03 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Cheers to Noble Mercedes!! :)

cevans 11-11-2016 08:35 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Great information.

For reference the part numbers for this seal are:
0179970445 for 2007-2010
0000940051 for 2010+

Easiest way to tell is that early models had a red seal late models have a black one.

auburnbuilder 11-11-2016 10:25 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Be careful to use the correct seal, see below:

This seal is orange in color and was used from 2007 to approximately 7/30/2010 It is designed to be used in the plastic intake hoses labeled 906 528 02 24 and 906 528 15 24. The black seal shown below is for 7/31/2010 and ONLY fits later hoses which are labeled 906 528 22 24.

BobLLL 11-12-2016 05:10 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
The 7/2010 change date published by MB is not entirely accurate. My 2011 model was built in 10/2010 and has the 906 528 15 24 hose and the orange seal. I tried one of the newer black seals, and sure enough, it did not fit well in the intake hose. So, the safest thing is to match the seal to the intake hose number, at least if you have a 2010 or 2011.

Also, I bought a small bicycle-style torque wrench so I could apply exactly the specified torque of 3Nm to the hose clamp on the turbo seal. That turned out to be a lot tighter than I expected it to be.

I am being especially careful about this turbo seal thing, because the intake hose came loose from the turbo about 3,000 miles after the first time the fuel filter was changed, by a MB dealer, at my first 10k service. Fortunately there was no damage to turbo. The seal looked fine, too. The van just suddenly lost power.

That tech was the only person to have touched anything under the hood before this happened (other than me checking the oil), so he must not have installed or tightened the seal correctly after the filter change. So, if a tech didn't get it right, it seems like we all need to be careful.

Aqua Puttana 11-21-2016 07:42 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
This comment led us away from the Sticky Topic.
Quote:

Originally Posted by BobLLL (Post 502182)
...

That tech was the only person to have touched anything under the hood before this happened (other than me checking the oil), so he must not have installed or tightened the seal correctly after the filter change. So, if a tech didn't get it right, it seems like we all need to be careful.


Go here for the comments.
http://www.sprinter-source.com/forum...d.php?p=504488

Back to topic.

vic

BobLLL 11-21-2016 10:45 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Aqua Puttana (Post 504490)
This comment led us away from the Sticky Topic.

Not my intention.

Aqua Puttana 11-22-2016 01:00 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by BobLLL (Post 504541)
Not my intention.

No problem at all. The board just took it and began to run with it. Kinda like hooking a Tarpon in the Keys. You toss out the line and it goes where it will.

A bit of meandering is fine, but it looked to me like it could veer off for too long and this is an important sticky.

Keep involved. Your reply was fine. :thumbup:

:cheers: vic

CJPJ 11-22-2016 06:10 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Eight plus years on the original OEM Orange silicone turbo inlet seal. I'll occasionally test its seal by putting my hand on the U-shaped inlet tube; it feels firm and thumps like a ripe melon.

In my case the Nobemercedes warning is not applied
:2cents:

smiller 11-22-2016 06:13 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I personally would consider it acceptable to inspect the seal and re-use it if it is in perfect condition. I think the 'always replace' advice may be more appropriate for a commercial environment where at under 20 bucks it's easier/quicker to replace than mess with inspection, plus the customer pays for it anyway so why accept even minimal liability.

Jbernielh 11-26-2016 04:18 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I tried everything, and could not get the main air inlet pipe (black plastic material) to stay attached to the orange silicon adapter at the turbo.. clean it, dry it, and clamp it.. look under the hood a couple hundred miles later and the black inlet tube had slipped off and the turbo was sucking unfiltered air..
finally used a PRC aircraft product we use on fuel and oil applications and glued the damn orange sleeve into the black tube and problem solved.. 5K miles later and still attached..

Bernie

mikeme 06-11-2017 07:35 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Has anyone put together a good, complete, diy for the fuel filter change which would include the 2015 Sprinter V6, including replacement of this seal?

HappyFamilyVan 06-13-2017 01:30 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
OK, call me dense but I may be missing something. I have been changing my fuel filter myself every 10K miles for the last 150k.
The way I learned how to change the filter was on this site. Step 1 was always to disconnect the hose going to the air filter box first, then remove the box, then remove the cover over the fuel filter and other things. The intake hose is never really moved, so how does it deform the seal going to the turbo? And should I be replacing the seal with each fuel filter change?

Thanks,
Happy

smiller 06-13-2017 02:53 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by HappyFamilyVan (Post 563228)
OK, call me dense but I may be missing something. I have been changing my fuel filter myself every 10K miles for the last 150k.
The way I learned how to change the filter was on this site. Step 1 was always to disconnect the hose going to the air filter box first, then remove the box, then remove the cover over the fuel filter and other things. The intake hose is never really moved, so how does it deform the seal going to the turbo? And should I be replacing the seal with each fuel filter change?

There is no need to remove the turbo intake hose to replace the fuel filter, and thus no need to replace the seal.

CJPJ 06-13-2017 03:55 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
^Yes
Quote:

Originally Posted by HappyFamilyVan (Post 563228)
The intake hose is never really moved, so how does it deform the seal going to the turbo? And should I be replacing the seal with each fuel filter change?

Just to refresh: the warning states; Change Turbo Seal Every Time Inlet Seal Is Disturbed

mikeme 06-13-2017 11:40 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I am pretty new, and mostly just want to do right by my 2015 3500 3.0 liter engine. just coming up on 20k and the first fuel filter change.

it seems like there may be a couple different MB design changes over the years which change where the fuel filter is located (relative to the air intake to the turbo)

the one on mine looks very close to that intake hose.

I have been ordering parts for a couple weeks. first the fuel filter, then some specialized pliers for the oem fuel hose clamps, and now an intake hose seal.

when I have all the parts, and a little time, will report if, indeed, I need to disturb the intake hose to turbo connection to replace the fuel filter.

(further advice welcome)

HappyFamilyVan 06-14-2017 12:07 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Thanks for the replies.

mikeme 06-15-2017 06:53 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
https://sprinter-source.com/forum/pi...pictureid=3791

apologies for further moving away from the main topic, but I am trying to see if I can replace the fuel filter without disturbing the turbo inlet seal.

the input turbo hose is at the top of this photo, and the mounting screw is just visible between the hose and fuel filter.

Got this far into it, and think I need to buy more tools. a flex drive and or ball end 5mm hex bit might let me loosen up the radial mounting without taking the hose off.

any suggestions?

jfreeth 06-18-2017 06:51 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I just experienced a loose 'orange' seal on my 2008, NCV3. It makes a distinctive low frequency (WOOO) sound, like a small exhaust leak, mainly when accelerating. There is a subtle loss of turbo boost and acceleration but does not go into LHM. Then ECL P0101 pops up, one of the Mass Air Flow faults. Open hood and wiggle the inlet tube... problem diagnosed.
Reading up on all the dire reports of turbo's ingesting the seal and self destructing I feel lucky, but sceptical that you need to replace the gasket unless it is damaged, degraded or the wrong type. I have simply reconnected the inlet tube dozens of times when doing standard maintenance, fuel filter replacement, glow-plug replacement, etc. over the last 8 years with no problems.

Amusingly I was dropping the vehicle off for air bag replacement under warranty at my local Dodge dealer, and they missed it, although they did recommend flushing the power steering and brakes for a princely sum, but that's another story.

mikeme 07-08-2017 02:17 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by mikeme (Post 563878)
https://sprinter-source.com/forum/pi...pictureid=3791

apologies for further moving away from the main topic, but I am trying to see if I can replace the fuel filter without disturbing the turbo inlet seal.

the input turbo hose is at the top of this photo, and the mounting screw is just visible between the hose and fuel filter.

Got this far into it, and think I need to buy more tools. a flex drive and or ball end 5mm hex bit might let me loosen up the radial mounting without taking the hose off.

any suggestions?

on my 2015, I ended up pulling the hose between the turbo and air filter. no realistic way to get this fuel filter out without doing so.

I ordered a replacement seal, but decided, after close inspection, that the seal looked to be in good shape. I gave the outside of the seal a wipe with a towel wetted with some of the dieselfuel from the old filter, and put it all together. (with 3NM torque on the screws that snug the clamps on that hose.)

Aqua Puttana 07-08-2017 03:26 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by jfreeth (Post 564637)
...
Reading up on all the dire reports of turbo's ingesting the seal and self destructing I feel lucky, but skeptical that you need to replace the gasket unless it is damaged, degraded or the wrong type. I have simply reconnected the inlet tube dozens of times when doing standard maintenance, fuel filter replacement, glow-plug replacement, etc. over the last 8 years with no problems.

...

I understand inspection and re-use DIY. It would seem that improper re-assembly is the biggest factor. Part replacement each time is the conservative approach.

I would suggest that having a new seal on hand would be worth the investment. Without a new seal on hand the temptation to re-use a questionable seal would be great. Given 8 years service perhaps install the new seal and keep the still good one as a spare.

:2cents: vic

Ldfeat 09-02-2017 07:16 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
"3Nm" Wow! That's only 26.5 inch pounds! Not very much...

smiller 09-02-2017 07:22 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Aqua Puttana (Post 569744)
I understand inspection and re-use DIY. It would seem that improper re-assembly is the biggest factor. Part replacement each time is the conservative approach.

I would suggest that having a new seal on hand would be worth the investment. Without a new seal on hand the temptation to re-use a questionable seal would be great. Given 8 years service perhaps install the new seal and keep the still good one as a spare.

This is the procedure I use. Replacement every time the seal is disturbed seems more designed to protect against damage from commercial service work where the mechanic may not be very careful about inspecting the seal, so it's easier to just replace it every time even if not necessary (on your nickel of course.) Otherwise it's not necessary to replace a seal in perfect condition, but I would have an extra on hand so (as Vic pointed out) you're not temped to put a questionable one back in service.

And I would not take the 3 nm torque spec too literately, that is essentially code to an experienced mechanic saying 'not too tight dumbass!' The proper procedure is to tighten so that there is a positive seal but not so much that the gasket is damaged. This does require some experience/feel but that's just part of the skill set anyone should have before attempting mechanical work.

.

mikeme 09-27-2017 06:15 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
seems the seal I left in place did not stay there.

the estimate is $6300 for new turbo, intercooler and oil change.

I probably made it worse by applying engine oil to the seal. (even though there is some oil inside the air pipe)

probably should have used the new seal, and made sure all mating surfaces were clean and dry, then torque to spec.

Aqua Puttana 09-27-2017 07:01 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by mikeme (Post 590956)
seems the seal I left in place did not stay there.
...

Bummer.

Quote:

Originally Posted by mikeme (Post 569723)
...

I ordered a replacement seal, but decided, after close inspection, that the seal looked to be in good shape. I gave the outside of the seal a wipe with a towel wetted with some of the dieselfuel from the old filter, and put it all together. (with 3NM torque on the screws that snug the clamps on that hose.)

Maybe diesel fuel wasn't a good choice.

Quote:

Originally Posted by mikeme (Post 590956)
... probably should have used the new seal, and made sure all mating surfaces were clean and dry, then torque to spec.

I think you may be on to something with "clean and dry". Even if there is oil within the hoses/system, when the seal remains tight the oil never makes it to the seal faces.

Sorry. I'm not trying to pile on. My intention is discussion for others who might be in the same situation as you were.

It sure seems like a poor design as compared to what was used on the T1N.

Any chance the turbo can be rebuilt by Garrett?

vic

Redpillar 09-27-2017 09:04 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Wow that is a drag, sorry to hear it.

mikeme 09-27-2017 09:28 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I have a request for quote from an independent shop.

unless it is way cheaper, I likely will let the dealer do the work. He did say he should be able to knock some off what the bill comes to. and the towing was free for me.

with under 30k on the rest of the van, I probably will go with a new turbo in any case IDparts has them for around $1300.\

indy estimate $4500. but by the time they came up with this, the dealer had the parts almost all installed

kind of an expensive lesson, but that is the way life goes sometimes.

my brother did a brake job on his chevy and spent $20k on back surgery as a result.

I now have greater apreciation for the original post. linked service note clearly says replace every time, 3 NM torque.

wondering what would be good to clean the mating surfaces with on the turbo inlet and inside of the tube.

suggestions on this welcome.

Aqua Puttana 09-30-2017 08:41 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by mikeme (Post 591012)
...

wondering what would be good to clean the mating surfaces with on the turbo inlet and inside of the tube.

suggestions on this welcome.

Carburetor cleaner doesn't leave any residue. I wouldn't spray it on. Dampen a rag and give it a wipe. Based only upon your experience, whatever is used to clean the area should not leave a residue and should be allowed to completely dry before installing the seal.

Such a sh*t design. It's amazing that they haven't included some sort of frame or skeleton molded within the seal rubber to stop this very expensive failure from happening. Seems to me that it wouldn't take much support to keep it from being sucked in. It must begin collapsing in one small area and then the distortion avalanches in for a complete failure. :hmmm:

vic

smiller 09-30-2017 11:22 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I'm really confused about how this happens. When properly installed the seal is on the outside if the turbo intake, in between it and the plastic pipe. If the seal is in place and clamped properly I don't see how it is possible for it to migrate in such a way that it gets sucked into the intake. The only thing I can envision is two possible scenarios... one is that upon installation the gasket somehow gets shoved out of position and into the turbo intake, but this doesn't seem very easy to do. The other is that due to excessive tightening of the clamp the gasket gets cut in half, allowing the now-separated trailing portion (with the lip) to get sucked in. I think this is what happened with the early design because that had a thin portion that was easy to damage, but updated replacement that has been out for many years is much thicker and not really prone to this. All in all a mystery to me.

BobLLL 10-01-2017 08:36 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Maybe sometimes the problem is the clamp is not tight enough, rather than too tight. I wondered exactly how tight the specified 3 Nm torque really is, so I got a small torque wrench of the type used on bicycles, with a range of 2 to 10 Nm. It turns out that 3 Nm is quite a bit tighter than what I would normally do when tightening a hose clamp by hand. I also found that if the clamp on the turbo hose isn't real tight, that the hose can be worked loose fairly easily by moving the hose back and forth. This could happen when people change the fuel or air filter, or remove the air box for other reasons, and put too much sideways stress on the hose. Eventually the hose could come off, and then the turbo seal can be inhaled by the turbo.

My turbo hose did come off once. Fortunately, the seal was not inhaled, but clearly it could have been. It wasn't my fault - no one had touched it since I bought the van until the first service at a dealer, but apparently the MB tech did not install or tighten the hose well enough after changing the fuel filter. Now, it is part of my regular under-the-hood inspections to check that hose is completely on the turbo and nice and tight.

TooMuchHair 10-02-2017 01:36 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by mikeme (Post 591012)
I have a request for quote from an independent shop.

unless it is way cheaper, I likely will let the dealer do the work. He did say he should be able to knock some off what the bill comes to. and the towing was free for me.

with under 30k on the rest of the van, I probably will go with a new turbo in any case IDparts has them for around $1300.\

indy estimate $4500. but by the time they came up with this, the dealer had the parts almost all installed

kind of an expensive lesson, but that is the way life goes sometimes.

my brother did a brake job on his chevy and spent $20k on back surgery as a result.


I now have greater apreciation for the original post. linked service note clearly says replace every time, 3 NM torque.

wondering what would be good to clean the mating surfaces with on the turbo inlet and inside of the tube.

suggestions on this welcome.

Mike, first I want to say I am so sorry this happened to your van, next I want to thank you for your original comments about changing your fuel filter. I did my 2015 today and your posts were very helpful, especially the pics of the omega shaped clamp.

So here are a few things for the future, when I saw that your seal stuck on the turbo (remembered others saying the same thing) I ran my heat gun on the turbo inlet for a few minutes and even though it would not budge before it it now slid off easily and left the turbo neck completely clean and stayed in the plastic clean air hose.
I too considered re-using the seal, but decided to use the new one I had ordered thinking "why carry it around?"
The next time you take this apart and look at how the seal needs to be worked into place into the female plastic part you will be able to see that just pushing it back onto the seal while still stuck on the turbo probably did not fully engage the step on the OD of the seal.
:cheers: I literally just came in and saw this, so thanks again and know that I am bummed for you.

And a huge thanks to all that Noblemercedes adds to this (and other) groups!

Aqua Puttana 10-02-2017 02:24 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by BobLLL (Post 591910)
... Eventually the hose could come off, and then the turbo seal can be inhaled by the turbo.

...

Around boats and airplanes that sounds like something which would be safety wired.

As parrot Poly - Thread Finder and owning T1N's, I'm not at all familiar with the NCV3's. Is this hose assembly something that could be safety wired to assure that the hose never leaves the proper position?

After a quick scan back through the thread it occurred to me that there isn't one picture of the hose/seal assembly. If someone adds some decent pictures I can copy/move them to my original post.

vic

BobLLL 10-02-2017 04:06 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Aqua Puttana (Post 591975)
Is this hose assembly something that could be safety wired to assure that the hose never leaves the proper position?

It doesn't seem like wiring it could easily be done, at least not by me.

Since I have become aware of the importance of making sure the seal and hose are correctly assembled on the turbo, and the clamp correctly torqued, I haven't found any tendency for it to come apart during normal use. But I check it regularly because the penalty for being wrong is so high. Not as bad as the penalty for not getting the o-rings right in the oil filter right, for example, but a similar "gotcha."

Also maybe worth mentioning again in this thread that there are two different seals, orange and black, and they are not interchangeable. The orange seal goes with an earlier version of the hose, and the black with a later version of the hose. Hose and seal have to match. Also, there is a different orange seal used in some of the passenger car versions of this engine. Looks similar, but didn't fit as tight in my hose. So you can't just go in and ask for an "orange turbo seal." Get the right stock numbers. Or else it's gotcha, gotcha, gotcha.

mikeme 10-03-2017 09:53 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I will get some photos of the outside of the assembled joint. will probably be a while until I take this apart again.

Thanks for the nice words and kind thoughts.

(it does seem short sighted that the design is so touchy overall. the fact there had to be tech guidance published is an indication of the failings of the design and material selection)

Motoheadz 10-04-2017 09:04 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Mike, how did you discover the seal had been sucked In?
I found my turbo had been chewed, only upon my curious inspection of the turbo intake while changing fuel filter for the first time. All other service done my MB dealer to date. Seal is black and still in place. Doesn't look compromised in any way.

I'm with others on this. If installed correctly, how on earth does that seal manage its way off the turbo inlet, and slip into the turbo, without the inlet pipe coming out of plac, and the now loose clamp flopping around?

mikeme 10-04-2017 09:45 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Quote:

Originally Posted by Motoheadz (Post 592748)
Mike, how did you discover the seal had been sucked In?
I found my turbo had been chewed, only upon my curious inspection of the turbo intake while changing fuel filter for the first time. All other service done my MB dealer to date. Seal is black and still in place. Doesn't look compromised in any way.

I'm with others on this. If installed correctly, how on earth does that seal manage its way off the turbo inlet, and slip into the turbo, without the inlet pipe coming out of plac, and the now loose clamp flopping around?

I heard the turbo whine, it refused to accelerate, and after I found a place to park, and had it towed to the dealer, a phone call with bad news.

I gave it a look in between, and did not see anything obvious.

remember the other end of the turbo inlet tube is clamped to the air filter housing.

I did not go down and look/photo the damage. (have to work sometime, especially with a big bill to pay)


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