1z KW-Schraube

[Translating...]

tach,

jetzt hat es mich auch erwischt . Trotz 12.9er Schraube hat sich die Verbindung von KW und Zahnriemenscheibe bei meinem Golf 3 (1,9TDI, AHU, EZ 23.11.1994, 390000 km) so weit gelöst, dass sich "Nut und Feder" abgerieben haben (s. Foto).

Jetzt meine Fragen:

Der Kollege aus der Werkstatt meinte ohne "Nut und Feder" kann man die Position der NW und der ESP zur KW nicht richtig einstellen.
Meiner Meinung nach spielt das doch keine Rolle. Wer hat recht?

Falls nichts dagegen spricht, würde ich den Stumpf planschleifen und eine neue Zahnriemenscheibe montieren lassen.

Was kostet mich die Aktion so ungefähr (Ich würde nur das nötigste machen lassen wollen - Zahnriemen etc. sind noch fast neu)? Wahrscheinlich trennt uns der TüV im Herbst .

Kann mir jemand eine gute Werkstatt im Raum Dortmund empfehlen?


P.S.: etwas zur Vorgeschichte hier: https://community.dieselschrauber.org/en/viewtopic.php?t=16548


Danke und
bis die Tage

hello,
Your workshop buddy is right. Without a proper, secure connection between the crankshaft and the timing belt pulley, you can forget about the adjustment. And even if you manage to get it right, it will likely come loose again. As you mentioned, you need a new timing belt pulley and the crankshaft journal needs to be precision-ground flat.
Insert the new screw and tighten it to 90 Nm + 90 degrees. And VERY IMPORTANT!! THREADS AND SEALING SURFACES MUST BE FREE OF OIL AND GREASE!! Otherwise, the preload will eventually disappear, and you might end up with something like what you're experiencing now. (This is just a guess).
Best regards.

Hey Querstromkopf,

Thank you for your response.

Quote:

Without a properly aligned connection between the crankshaft and the timing pulley, you can forget about getting it right. And even if you manage to get it right, it will likely come loose again.

If I understand the forum posts correctly, the tight, force-fitting connection between the front surface of the crankshaft and the timing pulley is sufficient. Of course, this only applies when there is proper support and the screw is tightened accordingly.

The groove in the crankshaft will not reappear, even with planing. Therefore, my colleague suggested that I might need a new key word.
I don't understand that, because I should be able to adjust the NW (narrowband) and ESP (electronic stability program) settings independently of the KW (adjustable spring) position.

Thank you.
until the days.

Hi.
You can adjust the timing with the distributor, as well as the camshaft.
Sincerely, Sure, here is the translation of the text from German to English:

"Dirk"

Get the tools to resurface the crankshaft, and new screws and a new timing pulley (which costs around 25 euros). verschandeln everything thoroughly with compressed air and brake cleaner, then apply red Loctite to the new screw before installing it. It should last around 30,000 km if the wear on the timing chain is minimal.

Okay, I'll try to borrow the tool.

Thank you.
until the days.