64 11 273 Replacing water valve for heater (N54, N55)
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WARNING:
Risk of burning!
Repair work on the cooling system may only be carried out when it has cooled down.
Repair work on the cooling system may only be carried out when it has cooled down.
NOTE:
Disconnect coolant hoses on water valve.
Recycling
Coolant emerges when coolant lines are detached. Have a suitable collecting vessel ready.
Catch and dispose of escaping coolant.
Observe country-specific waste disposal regulations.
Necessary preliminary tasks
- Remove REAR LEFT CHARGE-AIR DUCT
NOTE:
Picture shows engine removed for purposes of clarity
Release hose clamps (1) and detach coolant hoses.
Disconnect plug connection (2).
Pull water valve (3) upwards out of holders.
Installation note:
Do not mix up connections of coolant hoses.
Replace damaged coolant hoses!
Installation note:
Make sure rubber mount (1) and guide lug (2) are securely seated in holders (3) on wheel arch body.
After installation
- Fill and vent cooling system . See 17 00 005 DRAINING AND ADDING COOLANT (N55) or 17 00 009 CHECKING COOLING SYSTEM FOR WATERTIGHTNESS (N55, N63, N47 D20 O/T 1, N57 D30 U/O/T/S 0/1) and check for leaks.