Screw adapter -T40012- into spark plug socket. Connect a source of compressed air with a pressure of at least 0.6 MPa (6 bar). Loosen the valve cotters with the drift -VAS 5161/3- and a plastic-headed hammer.
For intake side
Screw strainer -VAS 5161/6- with pressure fork -VAS 5161/5- into central threaded hole in guide plate for FSI engines -VAS 5161/19B-. Insert socket -VAS 5161/8- into support plate for FSI engine -VAS 5161/19B-. Hook pressure fork -VAS 5161/2- onto net piece -VAS 5161/6-.
On the side of the exhaust valves
Screw strainer -VAS 5161/6- with pressure fork -VAS 5161/5- into outermost threaded hole in guide plate for FSI engines -VAS 5161/19B-. Press the assembly cartridge -VAS 5161/8- downwards and at the same time turn the knurled head screw of the assembly cartridge -VAS 5161/8- to the right until the tips engage in the valve cotters. Alternately turn the knurled screw in one direction or the other - the crackers will be squeezed out of each other and fixed in the cartridge. Release pressure fork -VAS 5161/2-. Remove assembly cartridge -VAS5161/8-.
Remove oil seal using puller -3364-.
If the valve stem seal puller -3364- cannot be used due to lack of space, press out the expansion pin -arrow- using a punch and impact tool. Fit bottom part of valve stem seal extractor -3364- onto valve stem seal.
Insert the punch -1- into the hole in the lower part of the puller. Place the mounting lever on the extractor and remove the oil seal -arrow-.
Installing the oil seal
Attention! Risk of damage when installing valve stem seals. Put on the valve stem the plastic sleeve -A- supplied with the new valve stem seal -B-.
Lightly coat the sealing lip of the oil seal with oil. Put the oil scraper cap on the plastic bushing. Carefully press valve stem seal onto valve guide using drift -3365-. Remove plastic bushing. Insert valve spring with poppet. Fit the assembly and dismantling tool -VAS 5161 as shown in the figure.
Note: If the valve cotters have been removed from the mounting cartridge, they must first be inserted into the receiving device -VAS 5161/18-. Press the assembly cartridge -WS 5161/8- from above onto the socket until the valve cotters enter the cartridge.
Press on the assembly cartridge -VAS 5161/8- with the pressure fork -VAS 5161/2-, turn the knurled screw of the assembly cartridge to and fro, while pulling upwards. Unload pressure fork -VAS 5161/2- while knurled screw of assembly cartridge is still tightened. Remove removal and assembly tool -VAS 5161-.
Installation in reverse order. Install camshafts.