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

CJPJ 10-04-2017 09:05 PM

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

Originally Posted by mikeme (Post 592768)

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.

Simple to test: thump the inlet tube. A proper installed / true to form inlet tube will thump like a ripe melon. Just putting your hands on the tube can indicate if both its ends are firmly attached or not.

Motoheadz 10-04-2017 09:16 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I had a fuel leak within 5K Kim's of purchase, had it fixed under warranty. A few days later I heard "air blow-off" sound, drove it a few Kms home. At low speed. Towed to dealer again. Said they left a clamp loose. Fixed it. I never questioned it. Now I inspect at 90k and see the turbos shot. So I guess I've driven possibly slightly under power for 90k kms, faced with the same turbo problem as you. Can't help but to think they didn't clamp it right back in 2011 And never owned up to it. Likely would have been on the dealers dime as MB wouldn't reimburse them if they determined it was an improperly installed seal.

mikeme 10-06-2017 12:22 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
one other item which may impact the seal failure. I had finished a DPF regen a bit before the failure. I monitor an exhaust temp with a scangauge (EGT2). normal temp around 300f, 400 under heavy load. 600f plus during DPF regen. (I see these every 500miles or so) noted one on the drive, completed and temp back to normal, stopped for ten minutes or so, and the failure happened a mile or so into the following drive. (i noticed the noise coming to a traffic light. thought it was another vehicle at first.)

my thought is that the turbo (and seal) could have been a little hotter than normal during the stop. not a primary cause, but straw that....

TooMuchHair 10-06-2017 02:54 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Hi, Mike, Are you sure that the temps you're watching aren't Centigrade?
I totally think that heat is possibly the big problem with this seal. With a couple of variables to consider, when the engine is running, the intake (cold) side of the turbo where the seal is located is kept well below block temp by the flow of cool/clean intake air, all is good. However, when you shut the engine off some of the heat stored in the hot (exhaust) side of the turbo inherently passes to the cold side. (Thermal equilibrium) This is where the variables get interesting.

Long trips with engine shut off @ turbo temps under 400F that seal will likely be fine until you change it again the next time you change your fuel filter. Lets go straight to worst case for making the point.

Short, frequent trips with no concern of turbo temp at shut down, easily could unknowingly be @700F maybe more. Add to that unawareness of most drivers the good chance of shutting down during a re-gen with turbo temp of possibly over 1300F, in either of these scenarios we can see temps increasing on the cold (seal) side climbing way beyond the limits of this seal and happening many more times due to the use of the vehicle. Of course adding a little engine oil from the crankcase vent in to the area only makes it tougher on the seal.

Off topic of the seal, but also important is the damage being done to the small amount of stagnate oil residing in the turbo during hot shutdown seeing temps beyond design limits. (fried!) And again it stands to reason the impact is increased by the frequency.

Further justification to the wisdom of monitoring our exhaust temps and especially taking note of the re-gen cycles.

mikeme 10-06-2017 07:48 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Right you are. degrees C. (just took a look and parked the temp is 30, and there is no danger of frost today)

I corrected two posts back.

Neil2 11-19-2017 04:26 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
True that. A firm that actually had good owner service (www) would get my loyalty. Was just trying to view/price a MOPAR EGR tube and it was exasperating on their site.

Pneumo 05-01-2018 03:18 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I found a 1 inch tear around my seal and have had no luck finding a mopar part number. I'm on the road and not so near any mercedes dealerships and the dodge shop hasn't been able to find the part either. Is this a mercedes only part, or am I just failing to find it? I don't have an address I can ship to here aside from general delivery, and I've already been in this area with car trouble for over a week. Is it safe to drive with this seal, given that I replace it asap?

Cheyenne 05-01-2018 04:24 PM

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

Originally Posted by Pneumo (Post 649276)
I

Is it safe to drive with this seal, given that I replace it asap?

From what I've read on here, NO!

Reason: In case it gets sucked into the turbo and results in further, costly, damage.

Keith.

bcislander 05-01-2018 06:14 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
2 Attachment(s)
Quote:

Originally Posted by Pneumo (Post 649276)
I found a 1 inch tear around my seal and have had no luck finding a mopar part number. I'm on the road and not so near any mercedes dealerships and the dodge shop hasn't been able to find the part either. Is this a mercedes only part, or am I just failing to find it? I don't have an address I can ship to here aside from general delivery, and I've already been in this area with car trouble for over a week. Is it safe to drive with this seal, given that I replace it asap?

The Mercedes part # for the seal for my 2007 is A 017 997 04 45. IIRC, the same seals were used in both 2007 & 2008.

Pneumo 05-01-2018 08:08 PM

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

Originally Posted by bcislander (Post 649327)
The Mercedes part # for the seal for my 2007 is A 017 997 04 45. IIRC, the same seals were used in both 2007 & 2008.

You are corret, both utilize the same seal. I was just hoping that Mopar had a part # for this part which would enable me to purchase it locally instead of having to overnight to this small town. All my research points to that not beinf the case however, unfortunately. Idparts overnight air is $38, not including the seal price which is a hard pill to swallow. Ah well, better to replace it than nuke my turbo I suppose.

Thanks all.

smiller 05-01-2018 08:14 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
FWIW the Mopar p/n for the turbo inlet seal on my 2007 V6 is 5175743AA

mikeme 05-12-2018 10:35 AM

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

Originally Posted by TooMuchHair (Post 591970)
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!

"the seal needs to be worked into place into the female plastic part"

This, I think was the source of my problem.

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.

Flagster 06-14-2018 05:05 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
My dealer did this at our 40K B service. Said it was now part of their normal maintenance procedure with disruption of the seal. 40.00 charged...

DSpencer 08-06-2018 07:18 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
4 Attachment(s)
Quote:

Originally Posted by smiller (Post 591773)
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.

I stumbled on this thread and my reaction is the same as this persons, none of this "problem" makes any sense to me. I have had that orange seal off and on multiple times. I have attempted to upload four JPEGs of photos I took of the relevant parts. The inlet tube to the turbocharger has a lip on the end that fits into the none-ribbed region on the inside of the orange seal. Clearly you have to put the seal first on the inlet pipe and then install the air hose over it because doing it the other way will very likely damage (or tear up) the silicone seal as it scapes over that inlet pipe lip as it is forced onto the turbo inlet. That lip is like all similar features on such pipes, namely to provide a safety to prevent the seal (and hose) slipping off because the band clamp, properly tightened, shouldn't permit that. The orange seal does slightly fold over the end of the turbo inlet tube when the connection is properly clamped together. My fourth photo (of the end of the air hose that goes over the seal on the turbo inlet; focus not good, sorry) shows the shelf inside the air hose that presses against that foldover on the orange seal, forcing it against the end of the turbo inlet pipe when the parts are properly assembled. The orange seal is a tiny bit wider/deeper than the air hose can accommodate so when the air hose and seal are installed properly on the turbo inlet, and the ring clamp tightened, a very tiny part of the orange seal can still be seen next to the turbo housing. I also cannot see how, at least with the setup on my OM642, you could tighten the band clamp so far that you would cut the orange seal inside. The air hose pipe is a fairly rigid plastic and not very compressible.
With the whole setup put together as I think it is clear it has to be done just how can some or all of that orange seal be sucked into the turbo? The physics doesn't add up. The only force that could pull the seal into the inner turbo inlet is vacuum and there is virtually no vacuum at the turbo inlet, unless I suppose your air filter is really blocked up. It is not possible to actually measure the vacuum right at the turbo inlet but I did measure just downstream of the air filter element by removing the small air pressure sensor on the air filter housing and connecting a vacuum gauge there. Now you could argue that the turbo inlet could have a little higher vacuum than where I measured, the problem is there was no measurable vacuum at the port I used (and although that was at idle it would only be about 5 or 6 times that at engine red-line, so at best slightly above zero). You also have to consider how much exposed surface area there is of the orange seal on the turbo inlet (with the air hose clamped over the seal), obviously at the turbo housing end. That area is where any vacuum inside the turbo inlet would be exerting force to pull the seal in, and the necessary vacuum to have any effect would have to be really high. Now obviously any shards of the orange seal that were created during improper assembly would be drawn by air flow into the turbo blades and cause a mess but nothing else makes any sense. Normally the orange seal is more or less dry but the crankcase ventilation hose joins the air hose just before the turbo inlet and you will find a drop or two of oil in the CCV hose but in my experience it doesn't seem to get up to the orange seal so that shouldn't be a factor. I admit that I have at times been tempted to put a light coating of the old classic black Permatex Form-A-Gasket #2 (non-drying) on the orange seal but decided that was unnecessary and would introduce a factor that I didn't need to contend with; my '08 Sprinter is enough of an ongoing project and I certainly don't need any extra aggravation.

TooMuchHair 08-06-2018 01:11 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
DSpencer, thanks for the photos of your orange seal. The newer style black seal has an added external square boss located in the same area where your orange seal folds over the turbo inlet slightly. This square boss on the outside of the black seal heads into the plastic air supply tube first, and must be worked into its corresponding groove first. It gets somewhat locked in position in the plastic tube once the boss and groove are engaged, but it would be pretty unlikely, maybe impossible to properly engage if the black seal was installed onto the turbo inlet tube first. It needs to be able to slightly flex inward for the larger OD of the square boss to make it "home" without damage.

Given the way these seals tend to get a little stuck to the aluminum turbo inlet I suspect the earlier orange seal's design is more tolerant to the plastic air pipe being turned to the side or removed without damaging the seal.

But the newer black sealing being "locked" into the plastic pipe you could see where turning the pipe could damage the seal. Or if someone that had worked with the orange seals pulled the plastic pipe off leaving the black seal stuck to the turbo inlet might not be aware of the new external boss needing to go into the plastic first.

Pretty simple stuff but at the same time plenty of room for confusion, even by MB technicians. There have been at least a dozen cases of turbo destruction that I have personally read about.

smiller 08-06-2018 01:27 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
FWIW the current orange seal is now solid with no ribbing at all, pretty much a thick hunk of silicone. Seems just about impossible for it to split unless heavily abused.

PermaHeretic 08-20-2018 09:03 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Does anyone know if this seal is likely to give rise to a P2263 error code?

mikeme 10-03-2018 07:27 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
https://sprinter-source.com/forum/pi...pictureid=5156

https://sprinter-source.com/forum/pi...pictureid=5157

https://sprinter-source.com/forum/pi...pictureid=5158

https://sprinter-source.com/forum/pi...pictureid=5160


I took these when changing my fuel filter last month.

the inlet tube as shown was installed by the dealer tech as part of my turbo replacement. (The inlet tube comes with a seal installed)

the seal came off the turbo and remained inside the tube when I pulled it off.

I wish I had taken some photos the first time I did this, would have saved me some, and perhaps others. my memory tells me that the seal stuck to the turbo inlet, and did not look like these photos. it had more of a grey color, and a surface that looked like some kind of folded plastic or fabric was against it. I lacked the knowledge to look inside the inlet tube, which was left close to avoid disconnecting additional tubing.

the seal shown is the old one, wiped off with a towel for these photos. It probably is fine, but I replaced it out of respect for my previous repair bill.

whambulance 10-04-2018 10:49 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
2 Attachment(s)
Don't overtighten the clamp, they said. Change the seal every time, they said....
This is what happened to me. I heard some unusual air leak/vacum noises and decided to investigate.

It's pretty self explanatory.... The pipe cost me $368 AU,
However, it did come with a new orange seal.

Aqua Puttana 10-10-2018 04:27 PM

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

Originally Posted by whambulance (Post 696113)
...

It's pretty self explanatory.... The pipe cost me $368 AU,
However, it did come with a new orange seal.

That seems like a dear price for a bit of plastic hose. :bash:

Was what I assume is a hardened area of the failure localized to the one end? Any hint as to what caused the material failure? Heat? Oil leak, solvents on the outside? Just age/miles?

vic

Bobnoxious 10-10-2018 05:42 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
https://m.youtube.com/watch?v=wYz92CZP7so

TooMuchHair 10-10-2018 06:49 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Nice video Bobnoxious, thanks!
But that sure looked like a new "radial" style seal that I thought would be black not orange. Can anybody comment and clear this up. If MB just showed this in orange, that seems like it will add to the confusion.

Bobnoxious 10-10-2018 07:05 PM

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

Originally Posted by TooMuchHair (Post 698085)
Nice video Bobnoxious, thanks!
But that sure looked like a new "radial" style seal that I thought would be black not orange. Can anybody comment and clear this up. If MB just showed this in orange, that seems like it will add to the confusion.

I do not know the date of video. As a result, the seal may have been superceded from orange to black.:idunno: I am kinda partial to the color orange. :smirk: Although, the black seal may be designed better

CJPJ 10-10-2018 07:44 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Bob thanks for that video, it explained the Nobemercedes idiot proofing; warning to change turbo inlet seal every time. I'm still using the original and couldn't understand why replace it. 2008 the orange silicone seal is impervious to the turbo heat but would easily tear with that maneuver.

whambulance 10-11-2018 10:54 PM

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

Originally Posted by Aqua Puttana (Post 698010)
That seems like a dear price for a bit of plastic hose. :bash:

Was what I assume is a hardened area of the failure localized to the one end? Any hint as to what caused the material failure? Heat? Oil leak, solvents on the outside? Just age/miles?

vic


Yep that did hurt a bit. They felt sorry for me, so they gave me "trade price", I wonder what the standard retail would be!!??

It is 10 years old... No other damage to the pipe, maybe it just got brittle? Plenty of oil from the crankcase vent, and the seal definitely looked worn compared to the new (orange) one I was given. I have a feeling that the workshop may have over tightened it when I was getting the dodgy injector sorted... My thinking is if the seal was worn, the correct ftlb of torque would no longer apply due to decreased radius of the seal, leading to the collapse of the plastic.... It's a strange tear though, definitely looks directional, like someone yoinked on it while it was fastened.

Fuel economy, response and power are considerably improved now that its not sucking air directly from the atmosphere ha!

Gpaw68 10-15-2018 08:21 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
So does any of this apply to the 4cyl engine? Just read this entire post and did not see any mention of it. I may have missed it though.

Bobnoxious 10-15-2018 09:37 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I would say it could be a potential failure point to be aware. Especially, while removing the air filter box. Pay strict attention to the hose clamp torque and use only genuine Mercedes Benz clamps and air filters. The devil is in the details with these Mercedes machines.

pfflyer 10-15-2018 09:55 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
The last service on my 2016 3500 I noticed there were not parts listed on the invoice break down for these parts after a fuel filter change. Other fuel filter changes they were listed. Service advisor checked with the tech and said that the notice has been changed to "inspect and change if necessary". I would be interested to find out if this is true or not.

Bobnoxious 10-15-2018 10:07 PM

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

Originally Posted by pfflyer (Post 699673)
The last service on my 2016 3500 I noticed there were not parts listed on the invoice break down for these parts after a fuel filter change. Other fuel filter changes they were listed. Service advisor checked with the tech and said that the notice has been changed to "inspect and change if necessary". I would be interested to find out if this is true or not.

It very well could've been amended. I would humbly request, in the interest of "good faith" customer service excellence, and a demonstration of their integrity, and commitment to customer satisfaction, provide a print-out of said bulletin.

mikeme 10-16-2018 11:28 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I had an interesting phone discussion yesterday with a person after some facebook exchange.

he had the original factory-installed turbo inlet seal, and when he removed the turbo inlet tube to allow access for the first fuel filter change on his 2015 3500 V6 sprinter, the seal stuck to the turbo inlet.


this makes at least three times (as reported here) these have stuck to the turbo inlet.

Ravenhill 11-06-2018 09:56 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I have a 2016 3500 V6. When I did the first fuel filter change at around 18,000 miles on the vehicle, I had been educated by you guys about the turbo inlet seal and proper air filter box handling, and had a replacement turbo seal on hand. However, when I tried to remove the old seal, it appeared to be well affixed as if it was glued in place. It looked like I would have to do some prying with sharp objects to get it out. It was not damaged or brittle or cracked, so I left it in place. It was still pliable on the edges, so it didn't feel like it had been cooked into place. Now it's time to change the fuel filter again. Could Mercedes be gluing the part in place to help keep it from getting sucked into the turbo? Has anybody had difficulty removing the old turbo seal? Do I need to up my vitamin intake?

Aqua Puttana 11-06-2018 10:04 PM

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

Originally Posted by Ravenhill (Post 707379)
... Could Mercedes be gluing the part in place to help keep it from getting sucked into the turbo? Has anybody had difficulty removing the old turbo seal? Do I need to up my vitamin intake?

The "glued into place" comment has come up a few times lately. The method may have changed. (Which makes sense to me.)

Quote:

Originally Posted by Ravenhill (Post 707379)
... However, when I tried to remove the old seal, it appeared to be well affixed as if it was glued in place. It looked like I would have to do some prying with sharp objects to get it out. It was not damaged or brittle or cracked, so I left it in place. It was still pliable on the edges, so it didn't feel like it had been cooked into place. ...

It sounds like you have the capability to assess the condition(s). In your situation, assuming all seems as before, I would likely do what you did the first go around. I have no data.
Listen to Mikeme. :thumbup:

I doubt you need vitamins, but my memory is that Wheaties cereal may help you a bit.
Added:
Apparently you may need the Wheaties.
:cheers: vic

mikeme 11-06-2018 10:14 PM

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

Originally Posted by Ravenhill (Post 707379)
I have a 2016 3500 V6. When I did the first fuel filter change at around 18,000 miles on the vehicle, I had been educated by you guys about the turbo inlet seal and proper air filter box handling, and had a replacement turbo seal on hand. However, when I tried to remove the old seal, it appeared to be well affixed as if it was glued in place. It looked like I would have to do some prying with sharp objects to get it out. It was not damaged or brittle or cracked, so I left it in place. It was still pliable on the edges, so it didn't feel like it had been cooked into place. Now it's time to change the fuel filter again. Could Mercedes be gluing the part in place to help keep it from getting sucked into the turbo? Has anybody had difficulty removing the old turbo seal? Do I need to up my vitamin intake?

consider yourself lucky

is your seal stuck to the turbo, or inside the tube?

mine was well-stuck to the turbo, and I left it in, cost me $5k almost 9,000 miles later.


several other folks have had luck with a little heat applied to the seal.

and my seal left for the turbo on a very hot day, after it had completed a DPF regen and sat for a few minutes (like 15 or 20)

Ravenhill 11-07-2018 12:45 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
Thanks guys.

Mikeme, it was stuck in the tube, not on the turbo. I'll report back when I take it apart again. I saw your posts about your issues - ugh. Sorry to hear that. Thanks for telling me about applying heat to the seal. I had not seen that nor did I think of that.

Aqua / Vic, thank you too. Wheaties it is.:D:

HappyFamilyVan 01-02-2019 08:11 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
3 Attachment(s)
Came back to this thread and re-read after I noticed cracks in my inlet hose during an oil change. As you can see by the close up shot I have an orange seal. Note: about 1 year ago I had some work done and the tech told me that they replaced the seal. So I was a bit surprised to see the Orange as my understanding was that Black was the new Orange and the newer seal was black. So I ordered a new inlet hose and seal from MB and decided to do myself. This way I knew I would have the correct seal.

Attachment 105800

Attachment 105801

To my surprise, an orange seal was already installed in the inlet hose. See pic 3. So now I have two seals, one that came in the hose and one that I ordered separately. Both orange. I have read on this site how you should install the seal in the inlet hose first before installing on the turbo, so I though cool, MB was saving me a step. But I still had an orange seal, but I was under the impression that the newer seals were black. I was confused.

Attachment 105802


So I decided to go talk with the tech. When I started to ask my questions, a big smile came across his face and he chuckled. He shared with me the Orange/Black dilemma. Yes there was a newer seal design and yes it was black and yes you installed into the inlet hose first. However, there was a catch. ONLY and ONLY if your sprinter was born with a black seal would you use the new seal. There were multiple service notices that came out on this issue and they were contradictory. When the original service notice came out, the tech said they trashed all the orange seals and only used the black new ones. Then another service notice came out and said only use the orange ones, so the tech said they trashed all the black seals. Then another service notice came out and said, it depends on the age of the Sprinter (NCV3) as to which seal to use. The tech told me these service notices all came in about a 3 month period.

So the final result on what/how to change:

If your Sprinter was born with orange seal (earlier models, my is an '08) you use orange. When you order an inlet hose, the seal will come installed in the inlet hose only to show you the direction of the fit. These are directional seals.

Step 1 Note the direction of the seal, then remove the seal from the inlet hose.
Step 2 Place the seal on the turbo in the correct direction.
Step 3 Attach the breather (wired sensor thing near the end of the hose. He said it sometime takes a bit of twisting to connect hence the reason to install BEFORE connecting inlet hose over the turbo which has the seal already on it.
Step 4 Line up the arrow on the inlet hose to the one on the turbo and slide inlet hose over the seal which is already on the turbo.
Step 5 Tighten clamp

If your Sprinter was born with black, then
Step 1 Then you should install seal in the inlet hose first.
Then follow Steps 3-5 above.

The reason for the different colored seals? Two different inlet hose designs. Very slight difference but there is a difference. The tech also recommended replacing the inlet hose every 5 years or so as the plastic gets brittle and can crack. As you saw in my pics above. New hose only costs about $150. Pretty cheap insurance considering the cost of a turbo. Also replace seal, if it needs it or not every 2-3 years. At under $25 really cheap insurance.

Just because the inlet hose is not disturbed, by replacing every 2-3 years you have the opportunity to inspect turbo and ensure seal is in good shape. By removing the inlet hose, it also makes it easier to pull the engine cover on the left side and inspect the pistons for leaks (so called black death). Catching early makes rectifying leaking pistons less of a mess.

Sorry for the long post, but thought I would share what I found out.

Happy Sprintering,
HappyFamilyVan

Bobnoxious 03-18-2019 11:45 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
1 Attachment(s)
Please note: Some model years, the clean air tube must be replaced to match the profile of the new seal. Refer to EPC for details.

levedr 03-25-2019 06:30 PM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
1 Attachment(s)
Quote:

Originally Posted by Aqua Puttana (Post 470134)
Thanks goes to Noblemercedes. :thumbup::thumbup:

Official Information from Mercedes.

NCV3 OM642 V6 Engine



The original thread is here.

Turbo inlet seal bulletin

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

Attachment 77752



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

What, if, is the significance of the three pointers?
Two on the hose, one on the turbo

PrinterUser 03-29-2019 02:12 AM

Re: Noblemercedes warning: Change Turbo Inlet Seal every time disturbed
 
I was work with that seals a hundreds times and it should be replace every time??
Of course I pay attention to condition when work on it. But replace it every time it stupid idea.
It’s Benz style... every time every where New bolts, nuts, connectors... I know couple important things like injectors bolts and washers and completely agree with this, but it’s not about simple rubber gasket on inlet duct even orange color... only one thing have sense there it’s correct tightening torque moment.

levedr 04-01-2019 05:17 PM

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

Originally Posted by HappyFamilyVan (Post 726898)

Attachment 105800



https://sprinter-source.com/forum/at...1&d=1553538512

Step 4 Line up the arrow on the inlet hose to the one on the turbo and slide inlet hose over the seal which is already on the turbo.

Which arrow on the turbo? The metal pointer tab pointing straight down or the embossed "arrowhead' on the metal tube?

Looking at the second picture here would the trained eye say that the turbo inlet seal was changed out 20 miles/ three hours ago?

Thank you

beez 10-28-2019 11:12 PM

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

Originally Posted by TooMuchHair (Post 698085)
Nice video Bobnoxious, thanks!
But that sure looked like a new "radial" style seal that I thought would be black not orange. Can anybody comment and clear this up. If MB just showed this in orange, that seems like it will add to the confusion.

Orange is the new black? :tongue:
I'll see myself out.


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