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Flush Air Conditioning - AR83.30-P-1785MFG

Model 118 118.353/354/653/654, 177.053/054, 247.753/754 

MODIFICATION NOTES

05.09.2023 Work procedure adapted.    
G00659496Courtesy of MERCEDES-BENZ USA

Schematic diagram of refrigerant circuit 

G00659497Courtesy of MERCEDES-BENZ USA

Front circuit flushing process 

G00659498Courtesy of MERCEDES-BENZ USA

Evaporator flushing process in wheel arch 

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  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
  Notes on handling refrigerant R1234yf   AH83.30-P-0003-02A 
  Notes on handling refrigerant R134a   AH83.30-P-0003-01KOA 
REMOVING Remove     
1 Remove dryer cartridge (6). AR83.30-P-6521MFG 
2 Remove refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7). AR83.55-P-5310MFG 
3 Remove front expansion valve (4).   AR83.30-P-5520MFA 
INSTALLING Install     
4 Install flushing adapter (7) in place of removed front expansion valve (4). TORQUE SPECIFICATION Bolt, expansion valve to retaining plate *BA83.30-P-1009-01T 
    SPECIAL TOOL Adapter
If the screw threads do not grip,
↓
pull the threaded plate out using an extraction hook, hold and screw in the screws alternately.		 Fig 2
    SPECIAL TOOL Extraction hook Fig 3
5 Position and tighten refrigerant lines on flushing adapter (7). TORQUE SPECIFICATION Nut, refrigerant line to expansion valve *BA83.30-P-1001-01T 
    SPECIAL TOOL Adapter Fig 2
6 Attach outlet line adapter (8) and inlet line adapter (9) to refrigerant lines of removed refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7) according to line diameters. TORQUE SPECIFICATION Bolt, refrigerant line to refrigerant compressor *BA83.55-P-1002-01BA 
    SPECIAL TOOL Adapter kit Fig 5
7 Install flushing adapter (13) in place of dryer cartridge (6). TORQUE SPECIFICATION Bolt, refrigerant line to desiccant cartridge *BA83.30-P-1010-01T 
    SPECIAL TOOL Adapter Fig 1
8 Connect air conditioning service unit with flushing tank and service hoses to outlet line adapter (8) and to inlet line adapter (9).    
REFER TO SPECIAL TOOLS 000 588 15 82 00 Air conditioning service unit R134a   WS83.00-P-0064B 
REFER TO SPECIAL TOOLS 000 588 18 82 00 R1234yf air conditioning service unit   WS83.00-P-0066B 
    IMPORTANT In principle, any air conditioning service unit can be used, regardless of the brand or design; it only has to have a flushing function.
IMPORTANT The flushing direction (arrows) is the opposite direction to the flow direction of the refrigerant circuit.
IMPORTANT Connect inlet service hose to inlet line adapter (9) and outlet service hose to outlet line adapter (8).		  
  Flushing     
9 Start flushing procedure at air conditioning service unit and follow instructions.    
REMOVING Remove     
10 Disconnect air conditioning service unit.    
REFER TO SPECIAL TOOLS 000 588 18 82 00 R1234yf air conditioning service unit   WS83.00-P-0066B 
REFER TO SPECIAL TOOLS 000 588 15 82 00 Air conditioning service unit R134a   WS83.00-P-0064B 
11 Detach refrigerant lines from flushing adapter (7). SPECIAL TOOL Adapter Fig 2
12 Remove flushing adapter (7) and seal openings of refrigerant lines with suitable stop plugs. SPECIAL TOOL Record plug Fig 4
    SPECIAL TOOL Adapter Fig 2
INSTALLING Install     
13 Install new front expansion valve (4).   AR83.30-P-5520MFA 
REMOVING Remove     
14 Remove front evaporator shutoff valve (10).   AR83.30-P-5510MFG 
INSTALLING Install     
15 Install the flushing adapter (12) in place of the front evaporator shutoff valve (10). Screw, electric expansion valve to evaporator in left front wheel arch *BA83.30-P-1016-01T 
    Adapter Fig 2
16 Position and tighten refrigerant lines on flushing adapter (12). Nut, refrigerant line to front evaporator shutoff valve *BA83.30-P-1020-01T 
    Adapter Fig 2
17 Connect air conditioning service unit with flushing tank and service hoses to outlet line adapter (8) and to inlet line adapter (9).    
REFER TO SPECIAL TOOLS 000 588 15 82 00 Air conditioning service unit R134a   WS83.00-P-0064B 
REFER TO SPECIAL TOOLS 000 588 18 82 00 R1234yf air conditioning service unit   WS83.00-P-0066B 
    IMPORTANT In principle, any air conditioning service unit can be used, regardless of the brand or design; it only has to have a flushing function.
IMPORTANT The flushing direction (arrows) is the opposite direction to the flow direction of the refrigerant circuit.
IMPORTANT Connect inlet service hose to inlet line adapter (9) and outlet service hose to outlet line adapter (8).		  
  Flushing     
18 Start second flushing procedure at air conditioning service unit and follow instructions.    
REMOVING Remove     
19 Disconnect air conditioning service unit.    
REFER TO SPECIAL TOOLS 000 588 18 82 00 R1234yf air conditioning service unit   WS83.00-P-0066B 
REFER TO SPECIAL TOOLS 000 588 15 82 00 Air conditioning service unit R134a   WS83.00-P-0064B 
20 Detach refrigerant lines from flushing adapter (12). Adapter Fig 2
21 Remove flushing adapter (12) and seal openings of refrigerant lines using suitable stop plugs. Adapter Fig 2
    Record plug Fig 4
INSTALLING Install     
22 Install new front evaporator shutoff valve (10).   AR83.30-P-5510MFG 
    Replace front evaporator shutoff valve (10) after the second flushing process.
REMOVING Remove     
23 Remove outlet line adapter (8), inlet line adapter (9) from refrigerant lines of removed refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7) and seal openings with suitable stop plugs. SPECIAL TOOL Adapter kit *Fig 5
    SPECIAL TOOL Record plug Fig 4
24 Remove flushing adapter (13) of dryer cartridge (6). SPECIAL TOOL Adapter Fig 1
INSTALLING Install     
25 Install new refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7).   AR83.55-P-5310MFG 
26 Install new dryer cartridge (6).   AR83.30-P-6521MFG 
27 Fill air conditioning system and inspect for leak tightness and proper operation.   AR83.30-P-1760MFA 
AIR CONDITIONING

Number Designation Model 118 Model 177
BA83.30-P-1001-01T Nut, refrigerant line to expansion valve M6 Nm 12 12
AIR CONDITIONING

Number Designation Model 247
BA83.30-P-1001-01T Nut, refrigerant line to expansion valve M6 Nm 12
AIR CONDITIONING

Number Designation Model 118 Model 177
BA83.30-P-1009-01T Bolt, expansion valve to retaining plate Nm 7 7
AIR CONDITIONING

Number Designation Model 247
BA83.30-P-1009-01T Bolt, expansion valve to retaining plate Nm  
AIR CONDITIONING

Number Designation Model 118 Model 177
BA83.30-P-1010-01T Bolt, refrigerant line to desiccant cartridge Nm 10 10
AIR CONDITIONING

Number Designation Model 247
BA83.30-P-1010-01T Bolt, refrigerant line to desiccant cartridge Nm 10
AIR CONDITIONING

Number Designation Model 118 Model 177
BA83.30-P-1016-01T Screw, electric expansion valve to evaporator in left front wheel arch Nm 6 6
AIR CONDITIONING

Number Designation Model 247
BA83.30-P-1016-01T Screw, electric expansion valve to evaporator in left front wheel arch Nm 6
AIR CONDITIONING

Number Designation Model 118 Model 177
BA83.30-P-1020-01T Nut, refrigerant line to front evaporator shutoff valve M6 Nm 12 12
AIR CONDITIONING

Number Designation Model 247
BA83.30-P-1020-01T Nut, refrigerant line to front evaporator shutoff valve M6 Nm 12
REFRIGERANT COMPRESSOR

Number Designation Engine 139
BA83.55-P-1002-01BA Screw/bolt, refrigerant lines to A/C compressor Nm 20
Fig 1: Identifying Adapter (177 589 01 91 00)
G16065292Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Adapter (213 589 01 63 00)
G16152284Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Extraction Hook (140 589 02 33 00)
G16152285Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Record Plug (129 589 00 91 00)
G16152286Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Adapter Kit (222 589 01 91 00)
G16152287Courtesy of MERCEDES-BENZ USA
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