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CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
6-cylinder direct-injection engine (3.6 l engine, 4V) - Edition 06.2019
– Remove camshafts
Calculate the max. permissible reworking dimension as follows:
– Insert valve and press firmly against seat.
Note
If the valve is to be renewed as part of a repair, use a new valve
for the calculation.
– Measure distance -a- between end of valve stem and upper
edge of cylinder head.
– Calculate maximum permissible reworking dimension from
measured distance -a- and minimum dimension
Minimum dimension:
Short inlet valve
Long inlet valve
Short exhaust valve
Long exhaust valve
Measured distance minus minimum dimension = max. permissi‐
ble reworking dimension.
Example:
Measured distance
-
Minimum dimension
=
Max. permissible reworking dimension
Reworking inlet valve seat:
a
= 32.8 mm diameter
b
= max. permissible reworking dimension
1)
c
= 0.9 to 1.5 mm
d
= max. ∅ 38.0 mm
r 2
= radius 2.0 mm
Z
= bottom surface of cylinder head
α
= 45° valve seat angle
β
= 30° upper correction angle
γ
= 60° lower correction angle
1) Calculating max. permissible reworking dimension
120
Rep. gr.15 - Cylinder head, valve gear
⇒ page 101
.
mm
mm
mm
mm
⇒ page 119
31.8
10.2
31.8
10.2
.
10.6 mm
10.2 mm
0.4 mm
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