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Remove/install refrigerant compressor - AR83.55-P-5300GW

MODEL 463 as of model year 2013/model refinement package 2012 

Shown on engine 157 

Fig 1: Refrigerant Compressor Remove/Install Components - Shown On Engine 157
G10781247Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
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 refrigerants. 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 emptied. 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   AH83.30-N-0005-01A
IMPORTANT Notes on handling R134a refrigerant   AH83.30-N-0003-01A
1 Remove fluid reservoir INSTALLATION IMPORTANT The fluid reservoir must be replaced each time the refrigerant circuit is opened. Observe additional oil quantity after replacing parts: ↓ AR83.30-P-6520GW 
    Correct oil level in air conditioning system after replacing parts. AR83.30-P-5252GW 
2 Remove fan unit   AR20.40-P-5050GW
3 Remove poly-V belt   AR13.20-P-0001GW
4 Remove guide pulley (2) See Remove poly-V belt. AR13.20-P-0001GW
5 Disconnect electrical connector (4)    
6 Remove suction line (6) and pressure line (5) from refrigerant compressor (A9) IMPORTANT Seal connections immediately with stop plugs.  
    TORQUE SPECIFICATION *BA83.55-P-1003-01R 
    SPECIAL TOOL Figure
7 Remove bolt (3) TORQUE SPECIFICATION *BA83.55-P-1001-01R 
8 Attach radiator guard plate    
9 Remove A/C compressor (A9) IMPORTANT Pull out refrigerant compressor (A9) from the front and remove from above.
INSTALLATION IMPORTANT When installing a new refrigerant compressor (A9), slowly relieve pressure from new refrigerant compressor (A9).
 
10 Correct oil level in refrigerant compressor (A9) INSTALLATION IMPORTANT If the refrigerant compressor (A9) was replaced due to interior damage: Replace suction line (6) and pressure line (5) together with sealing rings. AR83.55-P-5250GW 
11 Install in the reverse order    
REFRIGERANT COMPRESSOR

Number Designation Model 463
BA83.55-P-1001-01R Screw/bolt, refrigerant compressor to timing case and left engine support Nm 20
BA83.55-P-1003-01R Screw/bolt, refrigerant lines to refrigerant compressor Nm 20
Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07742724Courtesy of MERCEDES-BENZ USA