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Removing, installing |
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Danger of explosion
through welding or soldering work on the enclosed air-conditioning system. Danger of poisoning
through inhaling overheated refrigerant vapors. Danger of injury
through skin and eye contact with liquid refrigerant |
Do not conduct any welding work on enclosed air-conditioning systems nor in their immediate environment. Smoking and naked flame are prohibited. Wear protective eyewear and gloves and work only in well-ventilated areas. Repair work may be carried out on the air-conditioning circuit only after the system has been purged. |
AS83.00-Z-0001-01A |
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What to do on event of damaged or leaking air-conditioning system |
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AH83.30-N-0004-01A |
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Protect the air-conditioning system's circuit and components against dampness when conducting repair work |
All models fitted with air conditioning |
AH83.30-N-0005-01A |
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Instructions on how to handle R134a refrigerant |
All models with R134a refrigerant |
AH83.30-N-0003-01A |
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Generally, a new liquid tank (1) should be installed after the air-conditioning system malfunctions as a result of leakage, contamination or freezing, or after maintenance work or replacement of the refrigerant compressor. |
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| 1 |
Discharge (recycling) the air-conditioning system, evacuate, fill it and then check it for leaks |
Feed the purged compressor fluid back into the refrigerant circuit when filling the air-conditioning system |
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| 2 |
Remove the left front headlamp unit |
Standard headlamps |
AR82.10-P-4730A |
| 2 |
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Xenon headlamps |
AR82.10-P-4730B |
| 3 |
Remove the refrigerant pressure sensor (B12) at the liquid tank (1) |
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AR83.30-P-5430C |
| 4 |
Release the plug-type connector (5) at the refrigerant temperature sensor (B12/1) and disconnect it. |
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| 5 |
Remove the refrigerant temperature sensor (B12/1) from the liquid tank (1). |
Installation
: replace seal and wet with compressor fluid |
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*BA83.30-P-1008-01A |
| 6 |
Remove discharge lines (2,3) on the liquid tank (1). |
Installation
: when fitting the discharge lines, wet the thread with compressor fluid |
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*BA83.30-P-1003-01A |
| 7 |
Install in the reverse order |
Check the oil replenishment level when replacing the liquid tank |
*BF83.55-P-1005-01A |
| 8 |
Switch on the air-conditioning system and let the engine idle for approximately 4 minutes |
Set temperature to "Lo" and the blower to max. |
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| 9 |
Check the air-conditioning system function |
The air outlet temperature at the center nozzle must not drop below + 5°C, if necessary ↓
refer to the diagnosis manual to carry out a diagnosis check |
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| 10 |
Check the air-conditioning circuit for signs of any leakages |
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*WE58.40-Z-1002-20A |