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2.4.2
Camshaft identification
Identification between cam pair for cylinders 4 and 5 of respective
camshaft.
Camshaft
Identification
A - Exhaust camshaft
022
101 Index
B - Inlet camshaft
022
102 Index
Valve timing at 1 mm valve lift
Inlet valve
Exhaust valve
Opens BTDC
---
211.5°
Closes BTDC
---
6.5°
Opens ATDC
18.50°
---
Closes ATDC
223.5°
---
2.5
Checking valve guides
Special tools and workshop equipment required
♦ Universal dial gauge bracket - VW 387-
♦ Dial gauge
Test procedure
– Insert new valve into guide. The end of the valve stem must
be flush with the guide. Due to slight differences in stem di‐
ameters, use only an inlet valve in inlet guide and an exhaust
valve in exhaust guide.
– Determine rock. Wear limit: 0.8 mm
If rock tolerance is exceeded:
– Renew cylinder head.
2.6
Reworking valve seats
Special tools and workshop equipment required
♦ Depth gauge
♦ Valve seat refacing tool
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
2. Valve gear
91
