Remove/install air conditioner housing - AR83.30-P-5200GM

MODEL 463.202 /222 /236 /237 /243 /244 /245 /246 /247 /248 /249 /250 /254 /270 /271 /303 /306 /309 /322 /323 /332 /333 /336 /340 /341 /346 

Fig 1: Identifying Air Conditioner Housing Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Air Conditioner Housing Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Air Conditioner Housing Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	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
	Notes on coolant	All engines	AH20.00-N-2080-01A
	Procedure for a damaged or leaky air conditioning system		AH83.30-N-0004-01A
	Protect air conditioning circuit and components from moisture when carrying out repair work	All models with air conditioning	AH83.30-N-0005-01A
	Notes on handling R134a refrigerant	Air conditioning with refrigerant R134a	AH83.30-N-0003-01A
1	Drain coolant	Collect escaping coolant in a suitable container.
		Replace coolant Engine 612.965 in model 463.322/323, Engine 628.962 in model 463.309/332/333, Engine 642.970 in model 463.303/340/341 Engine 642.886 in model 463.306/336/346	AP20.00-P-2080G
		Engine 112.945 in model 463.244/245/250, Engine 113.962 in model 463.247/248/249/254, Engine 113.982 in model 463.243/246, Engine 113.993 in model 463.270/271, Engine 273.969 in model 463.202/222/236/237	AP20.00-P-2080GA
2	Remove fluid reservoir	Installation:  The fluid reservoir must be replaced each time the refrigerant circuit is opened..	AR83.30-P-6520GM
3	Unscrew nut (1)		*BA83.30-P-1001-01C
4	Remove pressure lines together with retaining plate (2)	Seal off openings, otherwise moisture will enter the system. Installation:  Use new sealing rings. Moisten threads and seal rings with compressor oil, otherwise refrigerant can escape.
			Figure
5	Remove heater supply hose (4) from neck	Plug openings.
			Figure
6	Remove heater return hose (5) from neck	Plug openings.
			Figure
7	Completely move back driver and passenger seats
8	Remove dashboard		AR68.10-P-1000GM
9	Remove accelerator pedal	Except model 463.202/ 222/ 236/ 237/ 303/306/ 336/ 340/ 341/ 346	AR30.12-P-1321GR
		Model 463.202 /222 /236 /237 /303 /306 /336 /340 /341 /346	AR30.12-P-1321GY
10	Remove driver's side floor covering		AR68.20-P-2045GR
11	Remove air duct to rear compartment on driver's side
12	Disconnect electrical connector (6) at evaporator temperature sensor (B10/6)
13	Remove injection system control unit	Only for engine 628.962	AR07.08-P-7008GC
		On engine 112.945, 113.962, 113.982, 113.993	AR07.08-P-7008GM
		With engine 612.965	AR07.08-P-7008GS
14	Disconnect electrical connector (7) from the blower regulator (A32n1)
15	Disconnect electrical connector (8)
16	Remove condensate water drain hoses (9)	Pry off from air conditioner housing (10) using a suitable tool.
17	Remove air conditioner housing bracket (10) from A-pillar		AR83.30-P-5200-01GO
18	Remove air conditioner housing bracket (10) from floor panel and firewall		AR83.30-P-5200-01GM
19	Remove AC housing (10)
	Notes on removing and installing the air conditioner housing		AH83.30-P-0006-01GM
20	Install in the reverse order
21	Read out fault memory and erase	After work is complete, faults stored in the fault memory must be processed and erased. The stored faults may be caused by disconnected lines during assembly or test work as well as by a simulation.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
22	Synchronize actuator motors
23	Perform basic programming		AR00.19-P-0200P

Fig 4: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA