64 12 160 Removing And Installing/Replacing Complete Independent Heater With Bracket
Special tools required:
- 13 3 010
Work on independent heating may only be carried out when it has cooled down.
Recycling
Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.
Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.
Necessary preliminary tasks:
- Remove left underbody panelling . See 51 47 ... REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT UNDERBODY PANELLING .
Disconnect plug connection (1).
Release hose clamp (2) and detach fuel line.
Release screw (3).
Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .
Disconnect coolant hoses (1) with special tool 13 3 010 .
Release hose clamps (2) and detach coolant hoses (1).
Release nuts (4) and unclip associated hoses from holder (5).
Remove heater (3) and set down on a suitable surface.
Release hose clamp (1) and remove complete heater (2) with bracket.
Replacement:
Modify muffler . See 64 12 089 REMOVING AND INSTALLING OR REPLACING MUFFLER/SILENCER .
Release hose clamp (1) and detach coolant hose.
Release bolt (2).
Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .
Disconnect plug connection (3) and remove auxiliary water pump (4).
Installation:
Check coolant hoses for damage and replace if necessary.
Release screws (1) and remove heater from bracket (2).
Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .
After installation:
- Vent cooling system . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N52K) .