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

MODEL 451.3## (except 451.39) 2#, 451.4## (except 451.49) 2# 

with CODE I01 (Air conditioning Plus) 

Fig 1: Identifying Air Conditioner Housing Remove/Install Components (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Air Conditioner Housing Remove/Install Components (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	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.	Do not 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
	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		AH83.30-N-0005-01A
	Notes on handling refrigerant R134a		AH83.30-N-0003-01A
1	Remove front CBS		AR88.00-P-1010MCC
2	Drain air conditioning system	Evacuate air conditioning and then fill it.	AR83.30-P-1760MCC
3	Disconnect fully automatic air conditioning service station
	000 588 04 82 00 Air conditioning service unit		WS83.00-P-0031B
4	Remove front module		AR62.30-P-1575MCC
5	Drain coolant	Model 451.3## (except 451.39) 2#, 451.4## (except 451.49) 2# with engine 132.9 with code I01 (Air conditioning Plus)	AR20.00-P-1142MCC
6	Unscrew nut (2)	Nut, refrigerant lines to expansion valve	*BA83.30-P-1004-01L
7	Pull out refrigerant lines (3) at expansion valve (1) and remove seal rings of refrigerant lines (3)
	Compressor oils (specification 362.0)	Seal refrigerant lines (3) and expansion valve (1) with suitable stop plugs. Otherwise, ingressing dirt and moisture may damage the components connected to the refrigerant circuit. Replace sealing rings on refrigerant lines (3) and wet with compressor oil when inserting.	MB 362.0 compressor oil A 001 989 08 03
8	Loosen click clamps (5) on coolant hoses (4) and detach coolant hoses (4)	Collect any escaping coolant in a suitable container.
9	Remove crossmember below dashboard		AR62.30-P-1250MCE
10	Disconnect heating or A/C electrical connector (X85/10)
11	Place left front floor covering in area of air conditioner housing (6) to one side
12	Remove bolt (12) and place vertical strut (11) to one side	Bolt, vertical strut to center tunnel	*BA62.30-P-1003-02B
13	Detach condensation drain hose (13) from air conditioner housing (6)	Ensure that condensation drain hose (13) is correctly aligned and latched at the air conditioner housing (6) connection.
14	Remove electrical connection (10) from accelerator pedal sensor (B37) and release retaining clip (9)
15	Unclip retaining clips (15) of main wiring harness (14) on air conditioner housing (6)
16	Unscrew nuts (7) from air conditioner housing (6)
17	Remove air conditioner housing (6) from vehicle	Make sure that the vehicle interior is not soiled by escaping coolant. Contaminated parts must be cleaned or replaced.
18	Disconnect electrical connector from air recirculation flap actuator motor (M39)	When replacing the air conditioner housing (6).
19	Loosen air recirculation unit (19) with spacer (8) from air conditioner housing (6) by twisting and remove	When replacing the air conditioner housing (6).
20	Disconnect electrical connector, remove bolts, and remove blend air flap actuator (M16/8)	When replacing the air conditioner housing (6). Counterhold driver shaft on opposite side of air conditioner housing (6).
21	Disconnect electrical connector and pull evaporator temperature sensor (B10/6) out of air conditioner housing (6)	When replacing the air conditioner housing (6).
22	Disconnect electrical connector (16), release lock (18), then detach blower motor (M2) by turning counterclockwise and pull out of air conditioner housing (6)	When replacing the air conditioner housing (6).
23	Disconnect electrical connector (17), then release blower motor series resistor group (R14) by twisting clockwise and remove	When replacing the air conditioner housing (6).
24	Detach air conditioner housing wiring harness (20) from air conditioner housing (6) and remove	When replacing the air conditioner housing (6).
25	Remove heat exchanger	When replacing the air conditioner housing (6).	AR83.20-P-1100MCE
26	Replace activated charcoal fine particle filter	When replacing the air conditioner housing (6).	AP83.00-P-8384MCC
27	Install in the reverse order