64 51 591 Removing and installing/replacing evaporator

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove 64 11 206 Removing and installing/replacing heater .

Carefully pull rubber grommet (1) and foam seal (2) over pipes (3) and (4).

NOTE: If necessary, replace rubber grommet (1) and/or foam seal (2).

Release screws (5).

Fig 1: Identifying Evaporator Pipes, Retaining Screws, Rubber Grommet And Foam Seal

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Carefully remove seal (2) and all remnants.

Installation:

Replace seal (2).

Turn temperature sensor for cold-air distributor (3) in direction of arrow and detach in upwards direction. Expose connecting cable (4) of temperature sensor for cold-air distributor (3) towards rear of heater/air conditioner (5).

Fig 2: Identifying Temperature Sensor, Cable, Seal, Plug Connection And Heater/Air Conditioner

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove upper housing (2) of heater/air conditioner in direction of arrow.

Installation:

Make sure upper housing (2) is correctly seated on heater/air conditioner.

Fig 3: Identifying Evaporator Upper Housing And Retaining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Pull evaporator (1) in direction of arrow out of lower housing (2) of heater/air conditioner.

Clean housing components with suitable cleaning agent.

Installation:

Make sure evaporator (1) is correctly seated in lower housing (2) of heater/air conditioner.

Fig 4: Identifying Evaporator And Heater/Air Conditioner Housing

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not bend radiator fins.

If necessary, clean or straighten radiator fins with slat comb.