Cam bridge screen

[Wolfman4584]

I currently am putting my car back together after replacing the timing chains and am at the point of installing the cam bridge. My screen looks good and I dont see any tears in it but was wondering if I should remove the screen anyways just to be safe?

[Spawne32]

It's almost a 100% certainty that at some point within the next 50k miles that screen will fail, so I highly recommend just removing it. It's attached to a brass ring that is pressed into the housing, so you should be able to just pry it up and out.

[Allowencer]

Highly recommend to remove it too. Back when I rebuilt my motor, I was able to get a replacement for it. 2 years later the intake cam adjustment module took a dump on me. I tore into the whole front of the motor just to ensure everything was ok with timing, that looked just like the day I put it together.

However, when I took the cam bridge off, no screen again. This time I couldn't find the screen. Wasnr going to tear the oil pan off to find it down there. It wont hurt anything floating lol.

Between the rebuild and cam adjuster failing was about 40k in miles. Somewhere in that timeframe the screen went bye bye [again]. I reinstalled everything and the car is running just fine.

Sent from my SM-G950U using Tapatalk

[Wolfman4584]

It's almost a 100% certainty that at some point within the next 50k miles that screen will fail, so I highly recommend just removing it. It's attached to a brass ring that is pressed into the housing, so you should be able to just pry it up and out.

So you would remove the screen and brass ring and everything then?

[mtroxel]

My screen was gone when I did my chain 30,000 miles ago. Didn't look for it very hard, and no problems.

[Theiceman]

found mine siting right at the entry to the head where the bracket mounts. I pitched it and moved on ..

[ericA6]

Is the screen replaceable or do you have to buy the whole camshaft bracket?


Sent from my iPhone using Audizine

[Allowencer]

Is the screen replaceable or do you have to buy the whole camshaft bracket?


Sent from my iPhone using Audizine

It used to have it's own part number and could be bought ala carte but it's gone now. You can only get it with a new cam bridge.

You really dont need one. It's there to protect any debris getting to the intake cam adjuster.

Sent from my SM-G950U using Tapatalk

[Theiceman]

I think you can get it off Ebay from China. I'd rather go without it though

Sent from my SM-G973W using Audizine mobile app

[Spawne32]

Is the screen replaceable or do you have to buy the whole camshaft bracket?


Sent from my iPhone using Audizine

even if you can find the screen (its been discontinued for years) its going to fail in 20k anyway.

[Theiceman]

even if you can find the screen (its been discontinued for years) its going to fail in 20k anyway.

Lol so true

Sent from my SM-G973W using Audizine mobile app

[ELaw]

Hey bringing this back from the dead... when removing the screen, do you remove *only* the screen, or also the part it attaches to, which minus the screen looks a little like a valve seal? In other words the brass ring and rubber bit that hold the screen.

[Theiceman]

Hey bringing this back from the dead... when removing the screen, do you remove *only* the screen, or also the part it attaches to, which minus the screen looks a little like a valve seal? In other words the brass ring and rubber bit that hold the screen.

I left mine.

Sent from my SM-G973W using Audizine Forum mobile app

[Chillaxin]

I removed the brass ring that is pressed into the bore. Mine had little sections of metal screen still attached that I did not want to let those migrate elsewhere in the engine. I would remove it if possible.

[ELaw]

That was my concern... that there might be bits of screen left behind. But I didn't know if that held the check valve in... it sounds like it doesn't?

[Chillaxin]

The check valve is pressed in separately. You are safe to "carefully" remove the screen ring and reinstall the bridge.

[clettngx]

I want to remove this as preventative maintenance... It should be a simple enough procedure. Remove upper timing cover. Remove cam bridge assembly with appropriate special tool( I have a timing kit), remove the screen and reinstall everything else. Have I missed anything?

Sent from my MHA-L29 using Audizine Forum mobile app

[Theiceman]

Geting it back.on can be a pain... may have to rock the cams back and forth as you do it
Exhaust cam bolt in bracket is tty and one use so replace it . I think 20n/m plus 90 but verify
Timing cover bolts are a 10mm head. Dont get distracted by tbe torx inside, get a slim ratchet and 10mm socket
Spool valve is a left hand thread 26 ft pounds i think.
N205 solenoid are 10mm bolts 9 n/m one holds the dipstick tube.


All just from memory so verify

Sent from my SM-G973W using Audizine Forum mobile app

[clettngx]

Geting it back.on can be a pain... may have to rock the cams back and forth as you do it
Exhaust cam bolt in bracket is tty and one use so replace it . I think 20n/m plus 90 but verify
Timing cover bolts are a 10mm head. Dont get distracted by tbe torx inside, get a slim ratchet and 10mm socket
Spool valve is a left hand thread 26 ft pounds i think.
N205 solenoid are 10mm bolts 9 n/m one holds the dipstick tube.


All just from memory so verify

Sent from my SM-G973W using Audizine Forum mobile app

I'll take a look at the manual. Many thanks for your input.

Sent from my MHA-L29 using Audizine Forum mobile app

[Theiceman]

Sorry n205 are torx

Sent from my SM-G973W using Audizine Forum mobile app

[Chillaxin]

Geting it back.on can be a pain... may have to rock the cams back and forth as you do it
Exhaust cam bolt in bracket is tty and one use so replace it . I think 20n/m plus 90 but verify
Timing cover bolts are a 10mm head. Dont get distracted by tbe torx inside, get a slim ratchet and 10mm socket
Spool valve is a left hand thread 26 ft pounds i think.
N205 solenoid are 10mm bolts 9 n/m one holds the dipstick tube.


All just from memory so verify

Sent from my SM-G973W using Audizine Forum mobile app

While reinstalling the bridge be careful not to force it back on. Tension from the chains is pulling the camshafts closer together. I had a friend that wedged a pry bar to pull the exhaust cam slightly towards the exhaust side of the engine and it went on easily. Make sure the surfaces have plenty of oil.



Look at 14:31

[Theiceman]

Yeah i had a budy rock the crank but the engine was out.

Sent from my SM-G973W using Audizine Forum mobile app

[Smac770]

To be complete, the correct sequence is ..., timing validated, rotate vibration damper to line up the notch with the lower timing cover, mount the bearing bracket and install the bolts hand tight, then release the lock on the cam chain tensioner, then torque the bolts, .... So there should not be tension on the chain when you're installing the bearing bridge.

[clettngx]

To be complete, the correct sequence is ..., timing validated, rotate vibration damper to line up the notch with the lower timing cover, mount the bearing bracket and install the bolts hand tight, then release the lock on the cam chain tensioner, then torque the bolts, .... So there should not be tension on the chain when you're installing the bearing bridge.

What if you just need to replace the cam bridge?

Sent from my MHA-L29 using Audizine Forum mobile app

[Smac770]

You do the process where you remove that one bolt, stick the tool down in to push the tensioner back, and lock the tensioner in place. Then do your deal. Same thing you'd do if you were resealing the cylinder head cover.

cam chain tension release rev.jpg

[clettngx]

You do the process where you remove that one bolt, stick the tool down in to push the tensioner back, and lock the tensioner in place. Then do your deal. Same thing you'd do if you were resealing the cylinder head cover.

cam chain tension release rev.jpg

Ah, I see. I saw this in my manual. Makes sense. Thank you!

Sent from my MHA-L29 using Audizine Forum mobile app

[SNice]

...shows removing the screen; brief description on part revisions, and getting the cam bridge back on...


https://youtu.be/qpBnywFLwBQ

Maybe I should also just get in there and remove the screen. Is removing the screen it’s own “job” or is it usually only done while servicing the timing chain?

About to go K04 - now I’m worried about the screen. Smh.


Sent from my iPhone using Audizine Forum

[Smac770]

Interesting video. I like his vids on the 2.0T work. Good clear shots (well, focus and lighting at least :-)
I wonder which composite part (06H 103 144) revision started using the bridge part (06H 103 166) revision H. The current composite is rev K; they put rev J on my engine when they did the rings in Feb '14.
https://www.ecstuning.com/Audi-B8_A4...ch/06H103144K/ ; only the Audi OE rev K shows the extended collar. So much for third party efforts.
As for the screen, wonder what mine is like 130k miles later. But I don't think I'd go removing the cam bridge just to check it, unless I was already going in for another reason (want to reseal that cover one day) or was hunting a related issue.

[clettngx]

Interesting video. I like his vids on the 2.0T work. Good clear shots (well, focus and lighting at least :-)
I wonder which composite part (06H 103 144) revision started using the bridge part (06H 103 166) revision H. The current composite is rev K; they put rev J on my engine when they did the rings in Feb '14.
https://www.ecstuning.com/Audi-B8_A4...ch/06H103144K/ ; only the Audi OE rev K shows the extended collar. So much for third party efforts.
As for the screen, wonder what mine is like 130k miles later. But I don't think I'd go removing the cam bridge just to check it, unless I was already going in for another reason (want to reseal that cover one day) or was hunting a related issue.

So you're telling me this isn't 'genuine'???
https://www.ebay.com/itm/133257082228
Hahaha

Sent from my MHA-L29 using Audizine Forum mobile app

[SNice]

Ha! Also wonder why they haven’t deleted the screen in the revision? Did revision “K” come out before or after that service bulletin that mentions removing the screen?

Here’s the one I bought last year from FCP. It’s revision “K” but still stamped “H”.
Attachment 201752
Attachment 201753
Attachment 201754


Sent from my iPhone using Audizine Forum

[Smac770]

"It’s revision “K” but still stamped “H”"

Keep in mind what I pointed out. 06H 103 144 is the composite part number Audi sells, which is the bridge (06H 103 166) with the check valve (06H 103 176) and screen (06H 103 081) already installed. That is on rev K. The bridge alone is on rev H. The screen seems to have always just been revision E, while the check valve rolled through several revisions in CY09. Which revisions of the three components are in each of the composite revisions? I'd be surprised if even Audi knew.

[SNice]

"It’s revision “K” but still stamped “H”"

Keep in mind what I pointed out. 06H 103 144 is the composite part number Audi sells, which is the bridge (06H 103 166) with the check valve (06H 103 176) and screen (06H 103 081) already installed. That is on rev K. The bridge alone is on rev H. The screen seems to have always just been revision E, while the check valve rolled through several revisions in CY09. Which revisions of the three components are in each of the composite revisions? I'd be surprised if even Audi knew.

Ahhhh! I see what you are saying now! 144 is the assembly. Any updates to its components would result in a new revision.


Sent from my iPhone using Audizine Forum

[clettngx]

So you're telling me this isn't 'genuine'???
https://www.ebay.com/itm/133257082228
Hahaha

Sent from my MHA-L29 using Audizine Forum mobile app

For what it's worth, the seller said this particular bridge is made by VW China. He was decent enough to send me the vw China part number 06J103144A. It clearly hasn't been revised, but I believe it's atleast made by a subsidiary of VW. Whether or not the new camshaft mount is 100% necessary, I am not sure. And if you want to take the screen out anyway, it might not be such a bad option.



Sent from my MHA-L29 using Audizine Forum mobile app

[Smac770]

I'm sure it's like the china sourced timing kits, they are just shipping the China version part numbers. How they relate to the various EU/US part numbers in physicality and quality is likely undocumented.

[clettngx]

I'm sure it's like the china sourced timing kits, they are just shipping the China version part numbers. How they relate to the various EU/US part numbers in physicality and quality is likely undocumented.

Yes. I'm uncertain about those too. As a test, I purchased a pcv valve from them.
https://www.ebay.com/itm/133511987097

I'll compare it to what I have now.

Sent from my MHA-L29 using Audizine Forum mobile app

[Smac770]

Yeah, I don't get the business bs when involving china, but Audi calls itself in china "FAW VW". So since that is its own business (joint venture, hahaha, between china FAW and VW), who knows to what standards its parts are built.

[clettngx]

I'm sure it's like the china sourced timing kits, they are just shipping the China version part numbers. How they relate to the various EU/US part numbers in physicality and quality is likely undocumented.

I think those timing chain kits might be a step too far for me... They do look Borg Warner genuine though, just produced in their china factory.
https://www.ebay.com/itm/133261257986

Is a Chinese produced VW/AUDI really a VW/AUDI? I know oem is best, but how much lower can we go from the b8 a4 platform. It's been riddled with problems, even if the car was made in Germany.

Sent from my MHA-L29 using Audizine Forum mobile app

[NitroViper]

I think those timing chain kits might be a step too far for me... They do look Borg Warner genuine though, just produced in their china factory.
https://www.ebay.com/itm/133261257986

Is a Chinese produced VW/AUDI really a VW/AUDI? I know oem is best, but how much lower can we go from the b8 a4 platform. It's been riddled with problems, even if the car was made in Germany.

Sent from my MHA-L29 using Audizine Forum mobile app

There is plants in China that produce parts for Audi Germany. It's a fact.

[clettngx]

There is plants in China that produce parts for Audi Germany. It's a fact.

Oh for sure. It's just finding a seller that legitimately sells them. If it's produced in china under VW or any other reputable brand, I'd be happy to use them. Elring, Borg Warner, VW all have parts factories there.

It's like buying a Panasonic TV because it's a Japanese company, yet the tv itself is made in china.

Sent from my MHA-L29 using Audizine Forum mobile app

[Theiceman]

China want to sell you parts saying they are audi or vw of china. They are simply replica knock offs, nothing more . if you are okay with that then its all good.

Sent from my SM-G973W using Audizine Forum mobile app