11 53 740 Removing and installing/replacing feed line (N54)
WARNING:
Danger of scalding!
Only perform this work after engine has cooled down.
Only perform this work after engine has cooled down.
Recycling:
Catch and dispose of drained coolant in a suitable container.
Observe country-specific waste-disposal regulations.
Necessary preliminary tasks:
- Drain COOLANT
- Remove both catalytic exhaust-gas converters. See REMOVING CATALYTIC CONVERTER FOR CYLINDERS 1-3 and REMOVING CATALYTIC CONVERTER FOR CYLINDERS 4-6 .
NOTE:
For purposes of clarity, the illustration does not shown the plug connection and coolant hose between the coolant pump and coolant thermostat.
Unfasten hose clip (2).
Tightening torque 11 51 4AZ .
Detach coolant hose (1) from coolant pump.
IMPORTANT:
Risk of damage!
Where necessary, to release the coolant feed lines (3 and 4), do not place pliers on the pipes.
Where necessary, to release the coolant feed lines (3 and 4), do not place pliers on the pipes.
Release screws (1 and 2).
Tightening torque 11 53 10AZ .
If necessary, release coolant feed lines (3 and 4) with suitable pliers at connection.
Installation:
Replace O-rings.
NOTE:
For purposes of clarity, the illustration shows the released coolant feed lines removed.
Release screws (1).
Tightening torque 11 53 3AZ .
Remove feed line (2).
Installation:
Replace seal.
Assemble engine.
Top up COOLANT .
VENTING INSTRUCTIONS must be observed without fail .