Audi A8 2003 Workshop Manual page 181

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– Screw sealing pin -VAS 5161/10- into guide plate.
– Screw adapter -VAS 5161/11- hand-tight into the glow plug
thread of the relevant cylinder.
– Screw snap-in device -VAS 5161/6- with engaging fork -
VAS 5161/5- into guide plate.
– Slide knurled spacer ring -VAS 5161/24-1- onto assembly car‐
tridge -VAS 5161/8- .
– Connect adapter to compressed air line using a commercially
available connection piece, and apply constant air pressure.
• Minimum pressure: 6 bar
– Hook pressure fork -VAS 5161/2- into snap-in device and
press assembly cartridge downwards.
– At the same time, turn knurled screw of assembly cartridge
clockwise until tips engage in valve cotters.
– Move knurled screw back and forth slightly; the valve cotters
are thus forced apart and taken up by the assembly cartridge.
– Release pressure fork.
– Take out assembly cartridge with knurled spacer ring, valve
spring plate and valve spring.
– Remove valve stem oil seals using the valve stem seal puller
- 3364- .
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Note
A plastic sleeve -A- is included with the new valve stem oil seals.
– Fit plastic sleeve -A- onto the valve stem to prevent damage
to the new valve stem oil seal -B-.
– Lightly lubricate sealing lip of valve stem oil seal.
– Slip valve stem oil seal over plastic sleeve.
– Carefully press valve stem oil seal onto valve guide using
valve stem seal fitting tool - 3365- .
– Remove plastic sleeve.
Audi A8 2003 ➤
175
3. Servicing valve gear