64 12... Replacing burner insert for independent heater

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Scalding hazard!
Carry out following tasks after engine and independent heater have cooled down.
Follow instructions for working on cooling system! See 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

IMPORTANT: The burner insert may only be replaced after the 24-month warranty period has elapsed.
The entire independent heater must be replaced during the warranty period.

Necessary preliminary tasks:

Remove complete independent/auxiliary heater .

Release screws (1) and remove bracket (2) from heater.

Tightening torque 64 12 2AZ, see AUXILIARY HEATER WITH CONTROLS

Fig 1: Identifying Screws And Heater Bracket

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Release hose clamp (1) on hose for circulating pump and disconnect hose.

Release hose clamp (2) on intake filter hose and disconnect hose.

Installation:

Check all water hoses for damage, replace if necessary.

Fig 2: Identifying Hose Clamp On Intake Filter Hose

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Carefully lift cover (1) off heater.

Fig 3: Lift Cover Off Heater

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Disconnect plug connection (1).

Fig 4: Identifying Plug Connection

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Disconnect plug connection (1).

Fig 5: Identifying Plug Connection

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Release screws (1).

Tightening torque 64 12 3AZ, see AUXILIARY HEATER WITH CONTROLS

Replace all screws.

Carefully lift out combustion air blower unit (2).

Fig 6: Identifying Combustion Air Blower Unit

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Release screws (1) and pull out burner insert (3) with grommet (2).

Replace all screws.

Tightening torque 64 12 4AZ, see AUXILIARY HEATER WITH CONTROLS

Installation:

Make sure grommet (2) is in correct installation position.

Fig 7: Identifying Screws, Burner Insert And Grommet

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Installation:

Replace seals (1, 2) and clean sealing surfaces thoroughly.
If necessary, remove soot deposits.
To prevent the fuel pipe on the burner element being damaged, coat seal (2) with spirit when fitting housing.

Fig 8: Identifying Seals
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After installation:

Fill and vent cooling system and check for leaks . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N62, N62TU) .