BMW 7 Series: Intake Pipe From Connecting Piece To Automatic Rear Air-Conditioning System

Notes

WARNING: Risk of injury! Refrigerant circuit is under high pressure! Follow safety instructions for handling R 134A refrigerant.

Avoid contact with refrigerant and refrigerant oil.

Follow safety instructions for handling REFRIGERANT OIL.

IMPORTANT: Observe SAFETY INSTRUCTIONS for raising the vehicle.

Risk of damage! Restart engine only when air conditioning system has been correctly filled.

If air conditioning system is opened for more than 24 hours:

Replace desiccant insert for A/C system.

To ensure that the refrigerant is almost completely drained from the rear heater - A/C system: In the diagnosis system under Service functions carry out the instruction for "Draining/filling refrigerant circuit".

Necessary preliminary work

• DRAWING OFF, EVACUATING AND FILLING THE AIR CONDITIONING SYSTEM are not included in the time value given for this work operation
• Remove ENTIRE EXHAUST SYSTEM
• Remove heat shield at rear.
• Remove UNDERBODY PANELLING

Slacken nut (1).

Take off holder (2).

Fig. 215: Identifying Slacken Nut

IMPORTANT: Support rear axle support with a suitable tool and secure against falling down.

Slacken screws (1) on right compression strut (2), do not unscrew fully.

Tightening torque 33 33 2AZ.

Slacken screw (3) (do not unscrew fully).

Tightening torque 33 33 1AZ.

Fig. 216: Identifying Right Compression Strut And Slacken Screws

Slacken screws (1) on rear axle support at rear right (2), do not unscrew fully.

Tightening torque 33 33 1AZ.

Gently lower rear axle at rear right to make it easier to feed out refrigerant lines later.

Fig. 217: Identifying Slacken Screws On Rear Axle Support

Unlock and open respective clamp (1).

Fig. 218: Identifying Respective Clamp

Release screw (1).

Disconnect suction line (2) from suction line (3).

Installation: Replace sealing rings.

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

Fig. 219: Identifying Suction Line And Screw

Slide bump stop (1) on suction line (2) out of holder.

Fig. 220: Identifying Bump Stop On Suction Line

Release corresponding screw (1) on expansion valve (2).

Tightening torque 64 53 5AZ.

Carefully detach respective refrigerant line (3) in downward direction.

Installation: Replace sealing rings.

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

Fig. 221: Identifying Corresponding Screw On Expansion Valve

Unlock and open respective clamp (1).

Feed out corresponding refrigerant line (2) between vehicle underbody and rear axle support (3).

Fig. 222: Identifying Rear Axle Support And Corresponding Refrigerant Line

After installation

• Evacuate and fill AIR CONDITIONING SYSTEM

OVERVIEW OF HEATER - A/C SYSTEM COMPONENTS

Fig. 223: Overview Of Heater And A/C System Components

1. Condenser for air conditioner
2. Drier insert for air conditioner
3. Independent heater and attachment parts
4. Water valve
5. Heater - A/C system and attachment parts
6. Fan and attachment parts
7. Compressor

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