Touareg 2003 ➤
8-cylinder injection engine - Edition 11.2011
Valve dimensions
Note
Valves must not be reworked. Only lapping-in is permitted.
Valve dimensions
Dimension
-∅ a-
-∅ b-
-c-
Inlet valve
26.8...27.0
5.96...5.97
Exhaust valve
29.8...30.0
5.94...5.95
103.64...104.14
45
mm
mm
mm 104.84...105.34
∠° 45
-α-
Note
Worn sodium filled exhaust valves must not be disposed of with‐
lk
out first preparing the valves.
WARNING
Wear eye protection and protective clothing to avoid eye inju‐
ries and chemical burns!
– They must be cut through in the centre of the stem with a
hacksaw. When doing this they must not come in contact with
water!
– When valves have been prepared as described, throw a max‐
imum of ten valves into a bucket filled with water and step
back!
– Due to the contact with water a sudden chemical reaction will
be initiated and the sodium fill will be burnt.
– After this treatment, the valves can be scrapped as normal
scrap.
2.1
Camshafts, checking axial clearance
Special tools and workshop equipment required
♦ Universal dial gauge bracket -VW 387-
♦ Dial gauge
Test procedure
Perform measurements with support elements and roller rocker
fingers removed.
2. Repairing valve gear
53
English 