I replaced my injector pump seals last week, many thanks to redtdi966, kneebull, & Audi5000TDI. I have just a couple things to add, that might be of some value.
As mentioned in the HOW-TO for replacing the pump seals, be sure and inspect the coolant hoses below the pump. One of mine was in desparate need of replacement:
In reading some other posts, this seems to be the hose that is most frequently compromised by leaks from the injector pump. It's a 3-way hose that goes between the water pump, head, and oil cooler. If yours is damaged, the replacement hose is part # 028 121 053 Q. $20 from www.autohausaz.com
) or $90+ from the dealer
Here's a picture of the parts included in Bosch Kit 2 467 010 003-000. You can see the difference between the top cover seal (right), and the quantity adjuster seal (left). The kit should be available from your local Bosch dealer for ~$18. Be sure you're getting the correct kit - the Bosch dealer initially told me i needed kit DGK-126, but that kit only has one of the 2 seals!
Also, be aware that diesel may wash away the ink you use to mark the position of the quantity adjuster. Redtdi966 warned about this, and i used a sharp scribe to mark the pump/quantity adjuster in several places before taking it apart. I also used a black Sharpie to mark the lower left corner (as described in the HOW-TO) but the diesel washed part of that mark away. If you use a scribe to mark the pump, be sure you're looking from the same angle when you go to line up the marks again - the position can be deceiving if you're looking from the side.
One thing i should have done differently - before taking the pump apart, disconnect the fuel lines at the fuel filter, and use your MityVac to pump fuel OUT of the injector pump body. I didn't, and when i opened the pump, i ended up spilling diesel all over the coolant hose i had just replaced
I didn't have the torque specs for the cover/QA bolts, so i put them back on by "feel" - does anyone know what the torque for those bolts should be?
One week & 500+ miles later, all's well - not even the tiniest drip.