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Home >> Mercedes Benz >> 2018 >> GLS450 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 166 Chassis 2 Of 3 >> Testing & Repair >> Remove/Install Desiccant Cartridge - AR83.30-P-6521GQ

Remove/Install Desiccant Cartridge - AR83.30-P-6521GQ

Model 166, 292 

MODIFICATION NOTES

06.10.2016 Safety note added AS83.00-Z-0006-01A  
12.09.2016 General note added AH83.30-P-0003-02A  
12.09.2016 Safety note added AS83.00-Z-0007-01A  
Fig 1: Desiccant Cartridge Components Location - Model 166
G14238205WARNINGDANGERWARNINGREMOVINGINSTALLINGTORQUE SPECIFICATIONTORQUE SPECIFICATIONREFER TO CAPACITIES & SPECIFICATIONSINSTALLATION IMPORTANTNOTESSPECIAL TOOLINSPECTCourtesy of MERCEDES-BENZ USA
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 rep Air work on the Air conditioning system circuit only after the system has been evacuated. Model 166, 292 except code 2U8 (Alternative refrigerant) AS83.00-Z-0006-01A 
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 rep Air work on the Air conditioning system circuit only after the system has been evacuated. Model 166, 292 with code 2U8 (Alternative refrigerant) AS83.00-Z-0007-01A 
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
Protect Air conditioning circuit and components from moisture when carrying out rep Air work   AH83.30-N-0005-01A
Procedure for a damaged or leaky Air conditioning system   AH83.30-N-0004-01A
  Notes on handling refrigerant R1234yf Model 166, 292 with code 2U8 (Alternative refrigerant) AH83.30-P-0003-02A
  Notes on handling refrigerant R134a Model 166, 292 except code 2U8 (Alternative refrigerant) AH83.30-N-0003-01A
REMOVINGINSTALLING Remove/install     
1 Drain Air conditioning system   AR83.30-P-1760CW 
2 Remove Front bumper Model 292 AR88.20-P-2000GQC
    Model 166 AR88.20-P-2000GQ
3 Remove Screw (1) TORQUE SPECIFICATION Bolt, fluid reservoir to condenser *BA83.30-P-1002-01J 
4 Remove Screw (2) TORQUE SPECIFICATION Nut/bolt, high-pressure line to fluid reservoir *BA83.30-P-1001-01J 
5 Pull out pressure lines (3)    
REFER TO CAPACITIES & SPECIFICATIONS Compressor oils (specification 362.1)   BB00.40-P-0362-01A
    INSTALLATION IMPORTANT The seals on the pressure lines (3) must be replaced and moistened with compressor oil.  
6 Remove desiccant cartridge (4)    
7 Seal opening at connection fitting using a suitable stop plug Only if desiccant cartridge (4) is not immediately installed.
NOTES The opening at the connection fitting must be plugged.
Otherwise penetrating dirt and moisture will damage the components that are connected to the refrigerant circuit.
 
    SPECIAL TOOL Record plug Fig 2
8 Install in the reverse order    
INSPECT Check     
9 Evacuate Air conditioning system, refill it, and then check the system to make sure that it functions correctly and does not leak   AR83.30-P-1760CW 
AIR CONDITIONING

Number Designation Model 166 Model 292
BA83.30-P-1001-01J Nut/bolt, high-pressure line to fluid reservoir Nm 7 7
AIR CONDITIONING

Number Designation Model 166 Model 292
BA83.30-P-1002-01J Bolt, fluid reservoir to condenser Nm 7 7
Fig 2: Identifying Set Of Sealing Plugs (129 589 00 91 00)
G14238206Courtesy of MERCEDES-BENZ USA