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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control System - 222 Chassis (2 Of 4) >> Testing & Repair >> Remove/Install Electric Refrigerant Compressor >> (Remove/Install Electric Refrigerant Compressor - AR83.55-P-5300LFH)

(Remove/Install Electric Refrigerant Compressor - AR83.55-P-5300LFH)

Model 222 With Engine 276.9 

G15400278Courtesy of MERCEDES-BENZ USA
DANGER Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
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
Notice  General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment   AH00.00-Z-0300-01A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Perform disable for the high-voltage on-board electrical system   AR54.10-P-1150LF
2 Switch off ignition    
3 Remove front engine cover    
4 Disconnect high-voltage connector (7) from electrical refrigerant compressor (A9/5) and place electric line (8) to one side    
5 Drain air conditioning system    
REFER TO CAPACITIES & SPECIFICATIONS Compressor oils (specification 362.0)   BB00.40-P-0362-00A
    NOTES
Only one compressor oil (specification 362.0) may be used.
In order to prevent the air conditioning system from malfunctioning.
INSTALLATION IMPORTANT Installation: Evacuate air conditioning system, refill it, and check it for proper operation and leak tightness.
AR83.30-P-1760LF 
6 Remove screws/bolts (2, 5) and remove refrigerant lines (3, 4) from electrical refrigerant compressor (A9/5) IMPORTANT Seal connections.
INSTALLATION IMPORTANT Installation: Replace sealing rings.
TORQUE SPECIFICATION Bolt, refrigerant line to refrigerant compressor
*BA83.55-P-1003-01M 
    SPECIAL TOOL Set of protective covers Fig 1
7 Disconnect electrical connection (1)    
8 Remove bolts (6) TORQUE SPECIFICATION Screw/bolt, refrigerant compressor to timing case/crankcase/engine support *BA83.55-P-1001-01M 
9 Remove electrical refrigerant compressor (A9/5) in an upward direction    
10 Install in the reverse order.    
REFRIGERANT COMPRESSOR

Number Designation Engine 276
BA83.55-P-1001-01M Screw/bolt, refrigerant compressor to timing case/crankcase/engine support Nm 20
REFRIGERANT COMPRESSOR

Number Designation Engine 276
BA83.55-P-1003-01M Bolt, refrigerant line to refrigerant compressor M8 Nm 20
Fig 1: Identifying Set Of Protective Covers (001 589 06 91 00)
G15400279Courtesy of MERCEDES-BENZ USA