Renewing Valve Stem Oil Seals With Cylinder Head Removed - Audi A8 2003 Workshop Manual

Audi A8 2003 ➤
8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– If valve cotters had been removed from assembly cartridge
they must first be inserted in insertion device -VAS 5161/18- .
Note
Larger diameter of valve cotters faces upwards.
– Press assembly cartridge onto insertion device from above
and take up valve cotters.
– Re-insert assembly cartridge -VAS 5161/8- into guide plate.
– Push pressure fork down and pull knurled screw upwards,
while turning screw in both directions – this will insert the valve
cotters.
– Release pressure fork with knurled screw still in pulled posi‐
tion.
– Repeat procedure for each valve.
Assembling
Installation is carried out in the reverse order; note the following:
– Ensure that all roller rocker fingers make contact with the ends
of the valve stems correctly and are clipped onto their respec‐
tive hydraulic compensation elements.
– Install glow plugs ⇒ Rep. gr. 28 .
– Install camshafts ⇒ page 167
3.6

Renewing valve stem oil seals with cylinder head removed

176
Rep. gr.15 - Cylinder head, valve gear
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