64 53 761 Intake pipe from connecting piece to automatic rear air-conditioning system (F02 only): Notes

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WARNING: Risk of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant oil.

Read and comply with SAFETY INFORMATION .

IMPORTANT: Observe SAFETY INSTRUCTIONS for raising the vehicle

Risk of damage!

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

Follow notes for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .

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

Replace desiccant insert for A/C 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 work:

DRAW OFF/EVACUATE the air conditioning system
Remove ENTIRE EXHAUST SYSTEM
Remove heat shield at rear.
Remove UNDERBODY PANELLING

Slacken nut (1).

Take off holder (2).

Fig 1: Identifying Slacken Nut

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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 2: Identifying Right Compression Strut And Slacken 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 Slacken 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 note:

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 note:

Replace sealing rings.

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

Fig 7: Identifying Corresponding Screw On Expansion Valve

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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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