Search for OT marking on the flywheel

After searching the Passat forum and this forum for a solution for about an hour, I have to create a new topic because I couldn't find a clear answer.

Today, I replaced the timing belt on my Audi A4 Passat. However, unfortunately, I'm not entirely sure which marking on the flywheel is the correct one.

Here, you'll find a '0' and then an 'I', which is just a line.
During disassembly, I used a mandrel and a Northwest Lineal to set the motor to Top Dead Center (TDC) while disconnecting it. In this case, the '0' marking was simply located in the center of the opening on the clutch bell.

Where should it be placed, or what is the purpose of the line?

Thank you for now.

[Translating...]

http://www.vogel-buchverlag.de/media/products/0744698001147181616.pdf?vogelsid=7ff02197619cbf0e626a6e5af6af...#search=%22ot%20afn%22

Thank you for the response.
Now, I need to mention that I have the 'Selbstmachbuch' (Etzhold) book.
Unfortunately, only the digit '0' is shown there, and there is no corresponding marking on the edge.

So far, I've only replaced timing belts on gasoline engines twice (about 15 years ago). In those cases, I was 'lucky' and had clear timing marks to guide me. That's why I was a little confused that the '0' doesn't have a corresponding element or that there's an extra line next to it.

Following the instructions and testimonials described here, and after reading the book, I eventually felt confident enough to try it.

It starts up immediately and, 'subjectively,' provides the same amount of power as before. I will have it adjusted at some point.

Merci

P.S. The service position for the Passat is a joke. If the pulley doesn't come off (because it's rusted solid), then you have to remove everything anyway. Then you also have to disconnect the coolant hoses. And just these two issues (I also received the wrong tensioner from the dealer ), caused this to take up 8 hours yesterday.

dieselmartin wrote:

In the picture, you can't see anything.
The "0" must be covered by half of the transmission bell housing!
[img][/img]

[img][/img]http://www.vogel-buchverlag.de/media/products/0744698001147181616.pdf?vogelsid=7ff02197619cbf0e626a6e5af6af...#search=%22ot%20afn%22{MARKER}http://www.franken-online.de/Steffarn/Audi%20Ordner/afn%20OT%201.png{MARKER}http://www.franken-online.de/Steffarn/Audi%20Ordner/AFN%20OT%202.png{MARKER}

Then, it's already off by at least 90,000 km because, during disassembly, the '0' on the housing was misaligned. Or lengthening of the belt?

Do you perhaps remember what that line is used for?

It's a shame that the '0' in my book isn't as clearly defined as it is in the image you showed.
I guess I have to take it apart again...

[img][/img]http://img153.

/img153/5001/otmarkercw4.th.jpg{MARKER}{MARKER}

Hi.

The AFN doesn't have a "0," or so "This is how it's done" volume 80 claims.

dieselmartin wrote:

Hi The AFN doesn't have a "0", at least that's what "so wird's gemacht" Bd 80

says.

This notch is there because I only know of engines that are installed horizontally. Like the Audi A3.

In the A4 and A6 Passat models, there's a line and a zero. I'm not entirely sure what the line is for. Perhaps if you turn the engine over and then the line appears, you'll immediately see that the 0 is also displayed .

If your "0" mark is slightly ahead of the timing mark, the ignition timing is advanced. Maybe he will do a little better in the upper body.

First of all, thank you very much for the tips.

Unfortunately, Steffarn is right. There's an 'arbitrary' '0' on the swing arm. Arbitrarily, when you don't know what to do with it.

I just managed to get him (the Passat) across the railway tracks. Autobahn A70/A9, AD BT/KU. On the straight, he struggles to reach just under 210 km/h (*edit: according to the speedometer! edit*). That's probably not far off. Would you still adjust the settings now? Because I don't think he'll go much faster. Before, even when he was new, he barely went any faster. Odometer reading: 265,000 km. 1. Turbo.
Here's the worst part of the old timing belt. Damage has been under observation since approximately 15,000 km.
[img][/img]
This side was facing the engine. The outer surface shows no resolution.

[img][/img]http://img247.

/img247/1231/zahnriemenveschleiev9.th.jpg{MARKER}{MARKER}http://img143.

/img143/416/kaumveschleizahnriemenni5.th.jpg{MARKER}{MARKER}

He looks quite healthy, though. I once had a T4 where the timing chain was 1mm thinner (worn down). It was running along the edge of the pulley, because the ESP (Electronic Stability Program) apparently wasn't properly (misaligned) mounted.