64 11 208 Replacing heat exchanger: Notes

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks:

Remove INSTRUMENT PANEL TRIM
Remove LEFT/REAR SUSPENSION CROSS-BRACE .
Remove BULKHEAD UPPER SECTION SOUND INSULATION

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.

IMPORTANT: Connections must not be mixed up!
Mark connection sequence of coolant hoses prior to removal.

Release hose clamps (1) 17 2 050 with special tool 2 and detach water hoses.

Fig 1: Identifying Coolant Hoses And Hose Clamps

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IMPORTANT: Carefully blow out coolant ports on the heat exchanger to remove the remaining coolant.
Close openings or line to heat exchanger with special tool 32 1 270 , to avoid media leak and dirt contamination.

Release screws (1).

Installation note:

Replace screws.

Remove cable routing holder (2) from the working area.

Fig 2: Identifying Cable Routing Holder And Screws

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NOTE: For purposes of clarity, picture shows heating and air-conditioning unit removed.

Unclip deflection arm (1) from angle positioning lever (2).

Installation note:

Deflection arm (1) must snap audibly into place!

Fig 3: Identifying Deflection Arm And Lever

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Release screws (1).

Unlock and disconnect plug connections on upper distributor housing (2).

Remove upper distributor housing (2).

Installation note:

Make sure filter housing guide lugs (3) are correctly seated in associated guide tabs on upper distributor housing (2).

Fig 4: Identifying Upper Distributor Housing, Filter Housing Guide Lugs And Screws

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Unclip pipe clamps(1).

IMPORTANT: Risk of contamination!
Escaping coolant must not get into the passenger compartment.

Remove water pipes (2).

Remove heat exchanger in direction of arrow.

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Fig 5: Removing Water Pipes

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