Valve Seats - Rework - Volkswagen Fox 2004 Workshop Manual

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
∅ a mm
∅ b mm
c mm
α ∠°
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-
Valve synchronization in the opening of 1-mm valve
Intake opens after TDC
Intake closes after BDC
Exhaust opens before BDC
Exhaust closes before TDC
2.1

Valve seats - rework

Special tools and workshop equipment required
♦ Depth gauge
♦ Valve seat recovery tool
Intake valve Escape valve
35,95
6,980
89,95
45
3 - Cyl. diesel engine - Edition 02.2009
31,45
6,956
89,95
45
1 R
15,8°
25,3°
28,2°
18,7°
Fox 2004 ➤
2. Valve command - repair
53