Suitable for the 1122TST and 1622TS, the Krānzle AZ-L Pump Packing Rebuild Kit (Seal Kit) contains leak return rings and water seals on 3-plunger AZL pumps
Parts listed in stock are physical inventory and ship directly from Detail Division
Manufactured in Germany
Here is a great video from Malcolm in the UK undertaking this project:
The YouTube video on how to do this is very straightforward. The only thing I would do differently is use a plastic trim tool instead of a screwdriver to make sure you don't score anything. I've needed to do this for a long time and put it off for way longer than I should have. My oil was coming out like a milk shake. Now that I know how easy it is, I'm much more confident repairing it myself. Going to do the valves now.