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Special tools and workshop equipment required
♦ Support -VW 387-
♦ Dial gauge
Check with tappets removed and with bearing caps installed.
Wear limit: max. 0.15 mm.
Seal the contact surfaces of bearing caps 1 and 4 of camshaft,
with Sealant -AMV 17400401- .
Apply Sealant -AMV 17400401- thin and evenly on surfaces -1-.
Note
♦
Ensure that no sealant enters grooves -arrows-.
♦
Bearing cap 4 is identified as bearing cap 5.
Valve dimensions
Note
Valves cannot be reworked. Only lapping-in is permitted.
Dimension
Intake valve
Escape valve
∅ a
mm
35,95
31,45
∅ b
mm
6,980
6,956
c
mm
89,95
89,95
α
∠°
45
45
Valve identification and synchronization
Identification
♦ Cam base diameter: -a- = ∅ 52.8 mm.
♦ Identification via numbers and letters on the external cam sur‐
face of the escape valve at cylinder 3:
Cylinder 3 -arrow-
1 R
Valve synchronization in the opening of 1-mm valve
Intake opens after TDC
15,8°
Intake closes after BDC
25,3°
Exhaust opens before BDC
28,2°
Exhaust closes before TDC
18,7°
2.1
Valve seats - rework
Special tools and workshop equipment required
♦ Depth gauge
♦ Valve seat recovery tool
Fox 2004 ➤
3 - Cyl. diesel engine - Edition 02.2009
2. Valve command - repair
53
