Remove/Install Air Conditioner Housing - AR83.30-P-5200LW

Model 205 

Model 213 

Model 253 

Shown on model 213 with code 1U6 (Refrigerant R744) 

Courtesy of MERCEDES-BENZ USA

Shown on MODEL 205 with CODE 581 (automatic air conditioning) 

Courtesy of MERCEDES-BENZ USA

Fig 1: Air Conditioner Housing Components Location - Model 253 (Shown On Model 205)

Courtesy of MERCEDES-BENZ USA

Shown on MODEL 205 with CODE 581 (automatic air conditioning) 

Courtesy of MERCEDES-BENZ USA

Shown on model 205 with code 581 (Automatic climate control) 

	Risk of injury  when working on air conditioning systems due to R744 refrigerant escaping under pressure. Risk of suffocation from inhaling R744 refrigerant in high concentrations. Health hazard caused by inhalation of R744 refrigerant	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 evacuated. Model 213 with code 1U6 (R744 refrigerant)	AS83.00-Z-0008-01A
	Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
Notice	Notes on coolant	Model 205 with engine 177, 264, 274, 276, 626, 651, 654 Model 213 with engine 177, 256, 264, 274, 276, 642, 654, 656 Model 253 with engine 177, 264, 274, 276, 642, 651, 654, 656, 780	AH20.00-P-2080-01KOA
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Protect air conditioning circuit and components from moisture when carrying out repair work		AH83.30-P-0005-01KOA
	Notes on handling refrigerant R744	Model 213 with code 1U6 (R744 refrigerant)	AH83.30-P-0003-03A
	Remove/install
1	Discharge air conditioning system.	Model 213 with code 1U6 (R744 refrigerant)	AR83.30-P-1760LW
2	Remove windshield wiper system.	Model 213 with code 1U6 (R744 refrigerant)	AR82.30-P-6400LW
3.1	Remove low and high-pressure line from expansion valve.	Model 205, 253 Model 213 except code 1U6 (R744 refrigerant)	AR83.30-P-5520LW
3.2	Remove bolt (13).	Model 213 with code 1U6 (R744 refrigerant) @ Refrigerant line (CO2) to evaporator	*BA83.30-P-1010-01R
4	Carefully open the cap on the coolant expansion reservoir, release the pressure in the coolant system and close the cap again.
5	Clamp off coolant hoses (11) with clamping devices and remove from heat exchanger.	Collect escaping coolant. Replace clamps (12). Clamp	Fig 2
		Hose clamp pliers	Fig 3
6	Seal connections of heat exchanger with stop plugs.	Record plug	Fig 4
7	Remove instrument panel.	Model 205, 253	AR68.10-P-1000LW
		Model 213	AR68.10-P-1000LWE
8	Disconnect positive line and Ground line from PTC heater booster.	Model 205 with engine 264, 274 with code 228 (Additional warm water heating) Model 205 with engine 264, 274 with code 463 (Head-up display) Model 205, 213 with engine 264, 274 with code 824 (Add.parts for countries w. low temperatures) Model 205, 213 with engine 654 Model 205, 213, 253 with engine 264, 274 with code 401 (Climatised front seats) Model 205, 213, 253 with engine 264, 274 with code 873 (Left and right driver's seat heating) Model 213 with engine 264, 274 with code 902 (Seat heater Plus for driver and front passenger) Model 213 with engine 642, 656 Model 253 with engine 264, 274 with code 463 (Head-up display) Model 253 with engine 642, 651, 654, 656	AR83.70-P-8000LW
9	Remove crossmember under instrument panel.	Model 205, 253	AR62.30-P-1250LW
		Model 213	AR62.30-P-1250LWE
10	Disconnect electrical connectors (1, 2) from climate control control unit (N22/1).
11	Disconnect electrical connector (3) from blower regulator (A32n1).
12	Extend center air ducts (4) at air conditioner housing (A32).
13	Extend front footwell air ducts (5) at air conditioner housing (A32).
14	Carefully remove air conditioner housing (A32] and take off towards passenger side.	Ensure correct seating of seal (6) between recess (7) of air conditioner housing (A32) and condensation drain (8). Otherwise condensation may get into the vehicle interior. Helper required. Make sure that the bolts (9) are seated in the guides (10).
15	Seal openings of refrigerant lines (14, 15) and evaporator.	Model 213 with code 1U6 (R744 refrigerant) Replace sealing rings of refrigerant lines (14, 15). Record plug	Fig 4
16	Install in the reverse order
17	Fill up coolant, bleed the engine cooling system and check for leaktightness.	Model 205, 213, 253
		Model 205 with engine 264	AR20.00-P-1142MRI
		Model 213 with engine 264	AR20.00-P-1142MRH
		Model 253 with engine 177	AR20.00-P-1142MNG
		Model 213 with engine 177	AR20.00-P-1142MNE
		Model 253 with engine 642	AR20.00-P-1142OGY
		Model 213 with engine 274, 276.8, 642, 654	AR20.00-P-1142OLC
		Model 205 with engine 177, 274.9, 276.8, 626, 651 Model 253 with engine 274.9, 276.8, 651	AR20.00-P-1142LW

Fig 2: Identifying Clamp (000 589 54 37 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Hose Clamp Pliers (003 589 03 37 00)

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Fig 4: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA