11 53 740 Removing and Installing or Replacing Water Pipe (N54)
WARNING:
Danger of scalding!
Only perform these tasks on an engine that has cooled down.
Recycling:
Catch and dispose of drained coolant.
Observe country-specific waste-disposal regulations.
Necessary preliminary tasks:
- Remove front splash guard.
- Drain coolant from radiator.
- Remove both primary catalytic converters.
Unfasten hose clip (1).
Detach water pipe in direction of arrow from water pump (2).
Release screws (1 and 2).
Tightening torque, see 11 53 2AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO
Remove water pipe in direction of arrow.
Installation:
Seal (1) must not show any traces of damage; check and if necessary replace.
Release screws (1).
Tightening torque, see 11 53 3AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO
Disconnect water pipe (2).
Installation:
Replace all seals.
Assemble engine.
Vent cooling system and check for leaks.