64 53 761 Intake pipe from connecting piece to automatic rear air-conditioning system: Notes

Risk of damage!

Restart engine only when air conditioning system has been correctly filled.

Follow INSTRUCTIONS  for opening and replacing parts in refrigerant circuit.

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

Replace desiccant insert for air conditioning system. See REPLACING DESICCANT INSERT  or REPLACING DESICCANT INSERT (CAPACITOR REMOVED) .

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 tasks: 

• 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 1: Identifying Nut And Holder

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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 2: Identifying Right Compression Strut And Screws

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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 3: Identifying Screws On Rear Axle Support

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Unlock and open respective clamp (1).

Fig 4: Identifying Respective Clamp

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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 5: Identifying Suction Line And Screw

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

Fig 6: Identifying Bump Stop On Suction Line

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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 7: Identifying Expansion Valve, Refrigerant Lines And Screws

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Unlock and open respective clamp (1).

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

Fig 8: Identifying Rear Axle Support And Corresponding Refrigerant Line

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