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Renewing valve stem oil seals with cylinder head installed > < Removing and installing camshafts

A5

Checking hydraulic valve compensation elements
Checking hydraulic valve compensation elements
  Note
t  The hydraulic compensation elements cannot be serviced.
t  Irregular valve noises when starting engine are normal.
Special tools and workshop equipment required
   
t  Feeler gauge
t  Adapter -T40058- for vehicles with dual clutch gearbox 0B5
Procedure
–  Start engine and run until radiator fan has started up once.
–  Increase engine speed to approx. 2500 rpm for 2 minutes (perform road test if necessary).
–  If the compensation elements are still noisy, locate the defective compensation element as follows:
–  Remove cylinder head cover: left-side → Chapter; right-side → Chapter.
–  Turn crankshaft until cam of hydraulic compensation element to be tested is at top:
Vehicles with manual gearbox:
–  Push vehicle forwards with 4th gear engaged and ignition switched off.
  W00-10109
Vehicles with dual clutch gearbox 0B5:
–  Remove front noise insulation -1- → Rep. gr.66.
  A10-11071
–  Insert guide pin of adapter -T40058- as follows:
l  The larger-diameter section -arrow 1- faces towards the engine.
l  The smaller-diameter section -arrow 2- faces the adapter.
  A13-10026
–  Use adapter -T40058- and angled ring spanner to turn crankshaft in direction of engine rotation -arrow-.
  A13-10651
All vehicles (continued):
–  Press roller rocker finger down -arrow- to determine clearance between cam and roller rocker finger.
–  If it is possible to insert a feeler gauge of 0.20 mm between cam and roller rocker finger, renew hydraulic compensation element → Chapter „Removing and installing camshafts“.
Additional steps required
–  Install front noise insulation → Rep. gr.66.
–  Install cylinder head cover: left-side → Chapter; right-side → Chapter.
  A15-0926

Renewing valve stem oil seals with cylinder head installed > < Removing and installing camshafts