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Checking oil pressure and oil pressure switch > < Removing and installing sump (top section)

A4 Mk2

Renewing oil retention valves
Renewing oil retention valves
  Note
In the event of irregular valve noise which disappears after a lengthy drive but repeatedly re-occurs when travelling short distances, the oil retention valves must be renewed.
Removing
–  Remove intake manifold → Chapter.
   
–  Unscrew cover beneath intake manifold.
1 - O-ring; renew
2 - O-ring; renew
3 - Oil retention valve for cylinder head (left-side), 20 Nm
4 - Banjo bolt, 15 Nm
5 - Spray nozzle valve for piston cooling spray nozzles, 25 Nm
6 - Oil pipe
7 - O-ring; renew
8 - Oil retention valve for cylinder head (right-side), 20 Nm
9 - O-ring; renew
Installing
Installation is carried out in the reverse order; note the following:
  Note
Renew gaskets and seals.
–  Install intake manifold → Chapter.
Tightening torque
  A17-0121
ComponentNm
Cover to cylinder block10

   

Checking oil pressure and oil pressure switch > < Removing and installing sump (top section)