How to change your PS pump and all three accesory belts
 

Difficulty- 6.5

Tools needed [ul][*]Socket Wrench[*]13mm socket[*]6mm allen wrench/socket[*]22mm socket/adjustable wrench[*]Torx T25, T30, T45[*]Screwdriver[/ul] If you're going to be doing this and you have relatively high miles, it's a good idea to replace all 3 accessory belts while your in there. They're cheap even from the dealership. You also have the opportunity to switch over to an electric fan now as well, which will net you a few hp. You just need to find an electric fan around 15 inches, ebay is a good place to find them, and a new belt from autozone. The belt is part #470k5 or # 5pk1195. You simply remove the viscous clutch and pulley, mount the electric fan inside the shroud, and wire it into the auxillary fan. I will be creating a full DIY for this in the future.

First you need to remove the front bumper and radiator. Instead of going through all this, I'll refer you to two other guides that show how to do it.

Here's APR's snub mount DIY which shows how to remove the bumper- http://goapr.com/Audi/support/snub_mount.pdf
And here's a timing belt DIY that shows how to remove the bumper and radiator- http://www.audiworld.com/tech/eng35.shtml

Once you got the radiator off, you need to drain the ps fluid. After that, you can start removing the PS pump. First you gotta remove the A/C belt in order to remove the main accessory belt.

Attachment 56808

Next you gotta remove the main accessory belt. You do this by rotating the spring-loaded tensioner clockwise

Attachment 56809

Then you can remove the pulley and water pump belt

Attachment 56810


Then you gotta remove the 3 bolts in the front that are holding the PS pump in place.


Attachment 56811

Then you gotta remove one more bolt in the back and disconnect the lines

Attachment 56812

I verified that the banjo bolt is in fact 22mm

And that's it. You now have the PS pump out, so you just need to put the new one in and install everything reverse of what you just did.