2.0 TDI Timing Belt Replacement - High-Pressure Pump Misaligned/Twisted

Hi there,

I'm new to this forum and would like to introduce myself briefly.

Living in the Geestland region near Bremerhaven, I am 38 years old and a qualified mechanical engineer.

Passionate mechanic, mainly working on motorcycles (For street use: Aprilia Tuono 1100, For track use: Aprilia RSV Mille RP), if anyone is interested .

To get to the main point, I attempted to replace the timing belt on my Audi A4 B8 2.0 TDI.

So far, so good. The timing belt is off – the crankshaft and camshaft are secured, but unfortunately, the high-pressure pump isn't.

Unfortunately, while clumsily removing the timing belt, the hub of the high-pressure pump was rotated approximately 30 degrees further.

Now, the crucial question: How do I proceed from here?

Thank you in advance for your help!

BG.
Chris.

Hi there,
What is preventing you from repositioning the high-pressure pump and sealing it?
hg
Herbert.

Hi Herbert,

Thanks in advance for your reply!

I didn't dare to rotate it 30 degrees counterclockwise because I felt resistance when I tried to do so slightly.
I'm not sure about the translation regarding whether it should be 360° or now only 330° clockwise, due to the gear ratio of the hydraulic pump.
I was thinking about a 2:1 ratio between the crankshaft and camshaft.

Or would it work if I just rotate it one turn clockwise?

BG.
Chris.

Ideally, both options should work. The high-pressure pump runs synchronously with the crankshaft, so the 360° (or 330° in your case) timing will never be wrong.
hg
Herbert.

Great, that's the information I needed.

Tomorrow, the "timing belt" operation will continue calmly .

BG.
Chris.