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Home >> Mercedes Benz >> 2003 >> G500 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Testing & Repair -- G-Class (463) >> Testing & Repair >> Correct oil level in air conditioning system when replacing AC compressor - AR83.55-P-5250GM

Correct oil level in air conditioning system when replacing AC compressor - AR83.55-P-5250GM

ENGINE 112 in MODEL 463.244 /245 /250 

ENGINE 113 in MODEL 463.243 /246 /247 /248 /249 /254 /270 /271 

ENGINE 273 in MODEL 463.202 /222 /236 /237 

ENGINE 612 in MODEL 461.302 /331 /332 /342 /345, 463.322 /323 

ENGINE 628 in MODEL 463.309 /332 /333 

ENGINE 642 in MODEL 461.304 /305 /333 /334 /340 /343 /344 /346, 463.303 /306 /336 /340 /341 /346 

  Correct oil level     
DANGER Risk of explosion  caused by welding or soldering work on closed air conditioning system. Risk of poisoning  caused by inhaling overheated refrigerant vapors. Risk of injury  to skin and eyes caused by contact with liquid refrigerant. Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained. AS83.00-Z-0001-01A
NOTES Procedure for a damaged or leaky air conditioning system   AH83.30-N-0004-01A
NOTES Protect air conditioning circuit and components from moisture when carrying out repair work All models with air conditioning AH83.30-N-0005-01A
IMPORTANT Notes on handling R134a refrigerant Air conditioning with refrigerant R134a AH83.30-N-0003-01A
    IMPORTANT Perform work rapidly, since compressor oil is hygroscopic.  
IMPORTANT Repair work for defective refrigerant circuit   AH83.30-P-1782-01A
1 Drain new refrigerant compressor IMPORTANT Drain compressor oil through the openings for low pressure and high-pressure lines.  
2 Drain removed refrigerant compressor IMPORTANT Use suitable measuring cup.  
INSPECT Checking     
3 Check condition of compressor oil IMPORTANT Check compressor oil for signs of contamination (color dark gray - black).  
MEASURING Measure     
4 Measure quantity of compressor oil drained from removed refrigerant compressor    
  Fill     
5 Fill new AC compressor IMPORTANT Pour the quantity of oil drained from the removed refrigerant compressor plus an additional 20 cm 3 into the new refrigerant compressor. Always use new compressor oil.