Audi Q7 2007 Workshop Manual page 136

Audi Q7 2007 !
6
6-cylinder TDI engine (3.0 ltr. 4-valve common rail), mechanics 01.2006
Procedure
–
Remove camshafts
–
Mark fitting location of roller rocker fingers for re-installa-
tion and remove.
Note
Audi Q7 models with a 3.0 ltr. TDI engine are always
equipped with steel glow plugs.
–
Remove all glow plugs using U/J extension and socket
-3220-.
–
Fit guide plate -VAS 5161/23- onto cylinder head.
–
Secure guide plate using the knurled screws -VAS 5161/
12-.
–
Insert drift -VAS 5161/3- into guide plate and knock valve
cotters loose using a plastic hammer.
–
Screw sealing pin -VAS 5161/10- into guide plate.
–
Screw adapter -VAS 5161/11- hand-tight into the glow
plug hole 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 5161/23-1- onto assembly
cartridge -VAS 5161/8-.
–
Connect adapter to compressed air line using a commer-
cially available connection piece, and apply constant air
pressure.
•
Air pressure: at least 6 bar
–
Attach pressure fork -VAS 5161/2- to snap-in device and
push assembly cartridge down.
–
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 cot-
ters are thus forced apart and taken up by the assembly
cartridge.
–
Release the pressure fork.
–
Take off assembly cartridge with knurled spacer ring.
–
Remove valve spring plate and valve spring.
130
Repair Group 15 – Cylinder head, valve gear
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