Audi Q7 2007 !
6-cylinder TDI engine (3.0 ltr. 4-valve common rail), mechanics 01.2006
2 Servicing valve gear
127
6
The retaining frame is shown without camshafts for illustra-
tion purposes.
– Turn retaining frame upside down.
– Apply the beads of sealant -arrows- onto the clean sealing
surfaces of the retaining frame as illustrated.
• The grooves -arrows- on the sealing surface must be com-
pletely filled with sealant.
• The beads of sealant must project 1.5 … 2.0 mm above
the sealing surface.
♦ The sealant beads must not be thicker than specified, oth-
erwise excess sealant could enter the camshaft bearings.
♦ The retaining frame must be installed within 5 minutes af-
ter applying sealant.
– Ensure that all roller rocker fingers contact the valve ends
and compensation elements correctly.
– Fit retaining frame together with both camshafts and
bracket -T40095- onto cylinder head.
After installing the retaining frame, wait about 30 minutes for
the sealant to dry.
– Tighten retaining frame bolts in the sequence -1 ... 18-
evenly, initially only hand-tight.
• The retaining frame should make contact with the cylinder
head over the full surface.
– Tighten retaining frame bolts to final torque in the se-
quence -1 ... 18-.
– Detach bracket -T40095- and tensioner -T40096-.
Remaining installation steps are carried out in reverse se-
quence; note the following:
♦ After installing camshafts, wait for approx. 30 minutes be-
fore starting engine. Hydraulic valve compensation ele-
ments have to settle (otherwise valves will strike pistons).
♦ After working on the valve gear, turn the engine carefully
at least 2 rotations by hand to ensure that none of the
valves make contact when the starter is operated.
– Install cylinder head cover (left and right) ⇒ page 107.
Cylinder head (left-side):
– Renew camshaft oil seal ⇒ page 120.
– Install toothed belt for high-pressure pump ⇒ page 48.
Note
Note
Note
Note
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