Audi 1.8 T 20V Lubrication system – exploded view of components

Lubrication system – exploded view of components – click image to enlarge –

1 – Oil pump

  • With pressure relief valve (12 bar)
  • Before installing, check that the two dowel sleeves → Item for centring oil pump/cylinder block are fitted.
  • Renew if running surfaces and gears are scored
  • Tightening torque for oil pump cover to oil pump housing: 10 Nm

2 – Chain sprocket for oil pump

  • Sprocket can only be fitted on oil pump shaft in one position.

3 – 22 Nm

4 – Drive chain for oil pump

  • Mark direction of rotation before removing
  • Check for wear

5 – Sealing flange

  • Apply sealant prior to installing
  • Renewing crankshaft oil seal on pulley end

6 – 15 Nm

7 – Chain tensioner

  • Tighten to 16 Nm
  • Do not dismantle
  • Renew only as complete unit
  • Note installation position
  • When installing, pre-tension spring and engage

8 – Drive chain sprocket for oil pump

  • Removing and installing

9 – Dowel sleeves

  • 2 x

10 – 15 Nm

11 – Intake pipe

  • Clean strainer if dirty

12 – O-ring

  • Renew

13 – Baffle plate

14 – 16 Nm

15 – 15 Nm

16 – Sump

  • Removing and installing
  • Install using sealant; sealant → Parts catalogue

17 – Seal

  • Renew

18 – Oil drain plug, 30 Nm

Oil spray jet and pressure relief valve

1 – Oil spray jet (for cooling of pistons)

2 – Bolt with pressure relief valve, 27 Nm

Opening pressure: 2.5 … 3.2 bar.