64 51 590 Removing and installing/replacing evaporator

NOTE:

Necessary Preliminary Tasks:

Unfasten plug connection (1) and disconnect.

Remove wiring harness (2) from air intake duct.

Fig 1: Identifying Wiring Harness From Air Intake Duct

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IHKA Only:

Release screws (1).

Release clip (2).

Remove air intake duct (3).

Fig 2: Locating Air Intake Duct

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Unfasten plug connection (1) and disconnect.

Disconnect plug (2) for heater wiring harness from housing.

Fig 3: Identifying Plug Connection For Heater Wiring Harness

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Disengage air distribution actuating rod (1) from flap control (3).

Disengage air distribution actuating rod (2) from flap control (3).

Fig 4: View Of Air Distribution Actuating Rod

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IHKA Only:

Detach plug connection (1) from servomotor/air distribution.

Detach wiring harness (2) from clip.

Release screws (3).

Fig 5: Identifying Servomotor/Air Distribution

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Release screws (1).

Fig 6: Locating Retaining Screws

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Release screws (1).

Fig 7: View Of Retaining Screws

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NOTE:

For purposes of clarity, illustration shows heat exchanger removed.

Raise upper half of housing to expose connecting rod/air flap (1).

Disengage connecting rod from air flap (2).

Fig 8: Locating Connecting Rod/Air Flap

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Remove evaporator (1) from lower half of housing (2).

Replacement:

Fig 9: Removing Expansion Valve From Evaporator

Courtesy of BMW OF NORTH AMERICA, INC.