11 44 000 Removing And Installing/Replacing Oil-Coolant Heat Exchanger (N54)
WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Danger of scalding!
Only perform these tasks on an engine that has cooled down.
Only perform these tasks on an engine that has cooled down.
IMPORTANT:
You must protect the alternator against contamination before carrying out any work on the oil or coolant circuit.
A residual amount of coolant emerges when the hoses are detached. A residual amount of oil emerges when the oil-coolant heat exchanger is released. Have a cleaning cloth ready.
Cover alternator with suitable apparatus.
A residual amount of coolant emerges when the hoses are detached. A residual amount of oil emerges when the oil-coolant heat exchanger is released. Have a cleaning cloth ready.
Cover alternator with suitable apparatus.
Necessary preliminary tasks:
- Drain coolant . See 17 00 005 DRAINING AND ADDING COOLANT (N54) .
- Remove fan cowl . See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N54) .
Release screw (1).
Tightening torque. See 11 42 3AZ in 11 42 OIL FILTER AND PIPES .
Do not detach oil lines from oil-coolant heat exchanger in downward direction.
Installation:
Replace O-rings .
Release bolts (1) on oil-coolant heat exchanger.
Remove oil-coolant heat exchanger towards front.
Installation:
Replace seal .
Reassemble car and set in horizontal position.
Vent cooling system and check for water leaks. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N54) .
Start engine and run at idle until oil pressure warning lamp goes out.
Stop engine.
Wait approx. 5 minutes and check engine oil level.
Top up engine oil if necessary.