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Home >> Mercedes Benz >> 2022 >> CLS450 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 257 Chassis 1 Of 2 >> Testing & Repair >> Drain, Evacuate And Recharge Air Conditioning, Check For Proper Operation And Check For Leaks - AR83.30-P-1760FR

Drain, Evacuate And Recharge Air Conditioning, Check For Proper Operation And Check For Leaks - AR83.30-P-1760FR

Model 257, 290 

G14549666Courtesy of MERCEDES-BENZ USA

Shown on model 257 

DANGER Risk of fire  due to ignition of R1234yf refrigerant on hot components. Risk of poisoning  caused by inhaling overheated refrigerant vapors. Risk of injury  to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion  due to formation of ignitable refrigerant/air mixtures 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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. AS83.00-Z-0007-01A 
WARNING Risk of poisoning  caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury  to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts 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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. AS83.00-Z-0006-01A 
Notice  Protect air conditioning circuit and components from moisture when carrying out repair work   AH83.30-P-0005-01KOA 
Notice  Procedure for a damaged or leaky air conditioning system   AH83.30-P-0004-01KOA 
  Notes on handling refrigerant R1234yf   AH83.30-P-0003-02A 
  Notes on handling refrigerant R134a   AH83.30-P-0003-01KOA 
  Draining     
1 Unscrew plugs (1).    
2 Connect filler connections (2, 3) of air conditioning service unit to the corresponding service connections.    
REFER TO SPECIAL TOOLS 000 588 04 82 00 Air conditioning service unit R134a   WS83.00-P-0031B
REFER TO SPECIAL TOOLS 000 588 10 82 00 R1234yf air conditioning service unit IMPORTANT When operating the air conditioning service unit, proceed in accordance with the operator's manual from the manufacturer. WS83.00-P-0034B
3 Extract refrigerant.    
4 Note down quantity of extracted refrigerant as well as compressor oil.    
5 Check receiver drier for re-usability. If there is a problem,

replace receiver drier.
 
    Model 257, 290 with engine 256 AR83.30-P-6521MSA
    Model 257 with engine 264 AR83.30-P-6521MSB
    Model 257 with engine 654, 656 AR83.30-P-6521OIB
    Model 290 with engine 177 AR83.30-P-6521FRX
  Evacuate     
6 Clean refrigerant and evacuate refrigerant circuit.    
7 Conduct vacuum test using air conditioning service unit.    
  Filling     
8 Add new compressor oil to the refrigerant circuit according to the oil filling capacity noted during extraction.    
REFER TO CAPACITIES & SPECIFICATIONS Compressor oils (specification 362.1) NOTES
Only use the approved compressor oil. If it is proven that a different compressor oil has been used, we will refuse to reimburse costs within the warranty and goodwill period. Daimler AG reserves the right to perform reexaminations.
NOTES
Correct oil filling quantity in refrigerant circuit. An incorrectly measured oil filling capacity leads to damage to the refrigerant compressor.
IMPORTANT Depending on the repair case, the oil filling quantity may need to be adjusted accordingly.
BB00.40-P-0362-01A
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional quantity of oil to be added when system suddenly looses fluid (e.g. line ruptured) *BF83.55-P-1002-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of condenser *BF83.55-P-1003-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of evaporator *BF83.55-P-1004-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of suction line *BF83.55-P-1005-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of pressure line *BF83.55-P-1006-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of refrigerant compressor *BF83.55-P-1007-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity with detectable leakage *BF83.55-P-1008-02D 
    FLUID SPECIFICATION Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of desiccant cartridge *BF83.55-P-1009-02D 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of refrigerant compressor *BF83.55-P-1002-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of evaporator *BF83.55-P-1003-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of evaporator of rear air conditioning system *BF83.55-P-1004-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of condenser *BF83.55-P-1005-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of drier *BF83.55-P-1006-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of inner heat exchanger (IWT) *BF83.55-P-1007-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of low-pressure line *BF83.55-P-1008-02E 
    FLUID SPECIFICATION Model 290 with engine 177, 256Additional filling quantity after replacement of high-pressure line *BF83.55-P-1009-02E 
9 Fill air conditioning. FLUID SPECIFICATION Model 257
except code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code 2U8 (Alternative refrigerant)
with code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code M256 (Inline 6-cylinder spark-ignition engine, M256)
except code 2U8 (Alternative refrigerant) Air conditioning/automatic air conditioning
*BF83.00-P-1001-01O 
    FLUID SPECIFICATION Model 290Air conditioning/automatic air conditioning *BF83.00-P-1001-01Q 
INSPECT Check     
10 Conduct pressure test using air conditioning service unit. If there is a pressure drop during the pressure test.

Check air conditioning system for leaks.
AR83.30-P-1761FR 
11 Remove filler connections (2, 3).    
12 Screw on plugs (1).    
AIR CONDITIONING/AUTOMATIC AIR CONDITIONING

Number Designation Model 257 with code 2U8 (Alternative refrigerant) with code M256 (Inline 6-cylinder spark-ignition engine, M256) Model 257 with code 2U8 (Alternative refrigerant) except code M256 (Inline 6-cylinder spark-ignition engine, M256)
BF83.00-P-1001-01O Air conditioning/automatic air conditioning Filling capacity for refrigerant g 590 630
Specification R134a - -
Specification R1234yf BB00.40-P-0361-01A BB00.40-P-0361-01A
AIR CONDITIONING/AUTOMATIC AIR CONDITIONING

Number Designation Model 257 except code 2U8 (Alternative refrigerant) except code M256 (Inline 6-cylinder spark-ignition engine, M256) Model 257 with code M256 (Inline 6-cylinder spark-ignition engine, M256) except code 2U8 (Alternative refrigerant)
BF83.00-P-1001-01O Air conditioning/automatic air conditioning Filling capacity for refrigerant g 630 590
Specification R134a BB00.40-P-0361-00A BB00.40-P-0361-00A
Specification R1234yf - -
AIR CONDITIONING/AUTOMATIC AIR CONDITIONING

Number Designation Model 290
BF83.00-P-1001-01Q Air conditioning/automatic air conditioning Filling capacity for refrigerant g 630
Specification R134a BB00.40-P-0361-00A
Specification R1234yf -
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1002-02D Additional quantity of oil to be added when system suddenly looses fluid (e.g. line ruptured) Compressor oil cm3 40 40
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1002-02E Additional filling quantity after replacement of refrigerant compressor Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1003-02D Additional oil filling quantity after replacement of condenser Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1003-02E Additional filling quantity after replacement of evaporator Compressor oil cm3 10 10
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1004-02D Additional oil filling quantity after replacement of evaporator Compressor oil cm3 40 40
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1004-02E Additional filling quantity after replacement of evaporator of rear air conditioning system Compressor oil cm3 10 10
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1005-02D Additional oil filling quantity after replacement of suction line Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1005-02E Additional filling quantity after replacement of condenser Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1006-02D Additional oil filling quantity after replacement of pressure line Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1006-02E Additional filling quantity after replacement of drier Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1007-02D Additional oil filling quantity after replacement of refrigerant compressor Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1007-02E Additional filling quantity after replacement of inner heat exchanger (IWT) Compressor oil cm3 10 10
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1008-02D Additional oil filling quantity with detectable leakage Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1008-02E Additional filling quantity after replacement of low-pressure line Compressor oil cm3 10 10
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 257 with engine 264, 654, 656 Model 257 with engine 256
BF83.55-P-1009-02D Additional oil filling quantity after replacement of desiccant cartridge Compressor oil cm3 20 20
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A
REFRIGERANT COMPRESSOR

Number Designation Model 290 with engine 177 Model 290 with engine 256
BF83.55-P-1009-02E Additional filling quantity after replacement of high-pressure line Compressor oil cm3 10 10
Specification BB00.40-P-0362-01A BB00.40-P-0362-01A