1.2 TDI CR engine (EA189) · Lubrication · Oil circuit

Removing and installing oil supply line and oil return (turbocharger support)

4.1.1 Assembly overview - oil supply line and oil return (turbocharger support)

  • 1 Oil return line
  • 2 Seal
    • Renew
  • 3 Bolt
    • 20 Nm
  • 4 O-ring
    • Renew
  • 5 Bolt
    • 20 Nm
  • 6 Oil return (turbocharger support)
  • 7 Bolt
    • 10 Nm
  • 8 O-ring
    • Various diameters.
    • Renew together with banjo bolt.
  • 9 Banjo bolt
    • 60 Nm
    • Renew together with O- rings.
  • 10 Oil seals
    • Renew together with banjo bolt.
  • 11 Banjo bolt
    • 30 Nm
    • Renew together with seals.
  • 12 Seal
    • Renew
  • 13 Connection pipe to exhaust gas recirculation cooler
    • With flexible joint; do not bend flexible joint - risk of cracking
    • Renew seals or gaskets.
  • 14 Nuts
    • 22 Nm
    • Renew
  • 15 Bolts
    • 9 Nm
  • 16 Seal
    • Renew
  • 17 Union nut for oil supply line
    • 22 Nm

4.1.2 Removing and installing oil supply line and oil return (turbocharger support)

Special tools and workshop equipment required

  • Torque wrench - V.A.G 1331-.
  • Tool set - T10395-
  • Used oil collection and extraction unit - V.A.G 1782-

»Carry out the following work sequence«

Removing

  • Remove noise insulation ⇒ Rep. gr. 50.
  • Remove drive shaft shield.
  • Remove connection pipe -2- leading to cooler for exhaust gas recirculation.

Collect escaping oil using used oil collection and extraction unit - V.A.G 1782-.

  • Undo union nut -1- with open box end wrench, width across flats 17 mm -A-.
  • Loosen banjo bolts -6 + 7-.
  • Unscrew bolts -1, 4 + 5-.

Remove turbocharger support and oil supply line.

Installing

Specified torques ⇒ 4 Oil circuit.

  • First bolt oil return line and oil return (turbocharger support) to crankcase and turbocharger by hand.
  • Position oil supply line on crankcase and turbocharger.
  • Then tighten oil return line and oil return (turbocharger support) in several steps up to the specified torque, alternating between the crankcase and turbocharger.
  • Then tighten the banjo bolt for oil supply line on crankcase and union nut on turbocharger in several steps up to the specified torque, alternating between the crankcase and turbocharger.
  • Finally tighten bolt on oil supply line/turbocharger support clamp to specified torque.
  • Further assembly in reverse order of removal.