64 51 522 Removing and installing or replacing expansion valve

Necessary Preliminary Tasks: 

• Draw off refrigerant from A/C system. Refer to 64 50 009 DRAWING OFF, EVACUATING AND FILLING A/C SYSTEM (R 134A) .
• Remove heater bulkhead. Refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .
• Remove trim for instrument panel, bottom left. Refer to 51 45 181 REMOVING AND INSTALLING/REPLACING TRIM FOR INSTRUMENT PANEL, BOTTOM RIGHT .
• Remove right glovebox. Refer to 51 16 360 REMOVING AND INSTALLING RIGHT GLOVE BOX .

Release screws (1). Tightening torque, refer to 64 53 2AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - X5 .

Detach lines (2).

Installation: 

Replace sealing rings.

Fig 1: View Of Lines

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Unhook holder (1).

Unclip heating duct for right footwell (2) and remove in direction of arrow.

Installation: 

Ensure heating channel for right footwell (2) is correctly seated.

Fig 2: Locating Heating Duct For Right Footwell

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Release screw (1).

If necessary, disconnect plug connection at socket. Unclip trim on center console (2) and remove.

Fig 3: Identifying Trim On Center Console

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Turn control wheel in center of fresh air grill (1) in direction of arrow to end position.

Unclip cable.

Release screws (2).

Remove cover (3).

Fig 4: Locating Cover Retaining Screws

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Remove sound insulation (1).

Fig 5: Identifying Sound Insulation

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Release screws (1) and remove plates (2).

Pull lines apart a little and remove expansion valve (3).

Installation: 

1. Replace sealing rings.
   Fig 6: Releasing Screws And Removing Plates

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