Valve adjustments

You should adjust your valves every 15,000 miles. To do the adjustment you neet Hazet tool 2574. Be careful as there are several variations on this tool. The one you want is pictured. Some variations are too small to fit the camshaft and are meant for gas VW motors while others are not as ergonomic.

You will also need a supply of VW diesel valve shims. It is also helpful to have a micrometer to verify shim thickness if the numbers have worn off.

To remove the shims use either the VW tool or a shot of compressed air in the notch on the valve depressor.

Do yourself a favor and draw a diagram before you start showing the 12 valves and which are exhaust and which are intake valves.

Your valve clearances will most likely be SMALLER than spec so you will have to put in thinner shims.