Series 3 V12 AAV Orifice Size Differences

[Kirbert (Author of the Book, former owner of an '83 XJ-S H.E.)]

Auxiliary Air Valve (AAV) disassembly and rebuild guide

As promised I’m making a detailed guide for rebuilding AAV. First step is to remove thermo bulb. You can do that by pressing in the other end (air outlet). Spray decent amount of oil inside the valve to make disassembly easier. [IMG_20181121_183641] Don’t worry you will not brake anything inside. [IMG_20181121_184043] Keep pushing till the bulb falls out. [IMG_20181121_184055] [IMG_20181121_184119] When the bulb falls out, take out the piston and spring and then push the remaining …