Remove/install heater housing · ar8325d1000fb · Mercedes-Benz WIS

AR83.25-D-1000FB

Remove/install heater housing

11.06.2013

MODEL	909
	with CODE HH9 (Regulated air conditioning (Tempmatic))

1	Heater housing
2	Connector
3	Electrical line
4	Electrical connector
5	Screw
6	Connector
7	Condensation hose

D83.25-1119-06

 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
	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
 	Remove/install
1	Remove fluid reservoir		AR83.30-D-6520F
		 Installation: Replace receiver/drier.
 Danger !	Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
2	Disconnect ground line from battery
	Notes on battery		AH54.10-P-0001-01A
3	Remove cover of radio installation slot
4	Remove glove box
5	Remove stowage compartment below pen holder
6	Remove covering on instrument cluster		AR68.10-D-1550F
7	Remove instrument cluster		AR54.30-D-6015F
8	Remove stowage compartment above glove compartment		AR68.10-D-1515F
9	Remove speaker		AR82.62-D-7833F
10	Remove cover on center part of dashboard		AR68.10-D-1190F
11	Remove air conditioning pushbutton control unit		AR83.25-D-1124FA
		 Installation: If wires for air distribution were removed:

		
		Adjust air distribution control cables
			AR83.10-D-1400-01F
12	Remove drawer		AR68.10-D-1195F
13	Remove top part of dashboard		AR68.10-D-1020F
14	Remove central electric unit		AR54.25-D-1382F
15	Remove air nozzles in instrument panel		AR68.10-D-1110F
16	Remove dashboard		AR68.10-D-1000F
17	Detach ventilation box and put down on engine		AR83.10-D-0010-03F
18	Remove connectors from heater housing (1) at front		AR83.25-D-1000-01FA
		 Collect escaping coolant using suitable vessel.
		 Screw/bolt, refrigerant line connector block on evaporator	*BA83.30-N-1008-02A
		 Record plug	*129589009100
19	Remove air ducts		AR83.25-D-1000-02F
20	Disconnect connector (2) from exit temperature sensor
21	Expose electrical line (3) and disconnect electrical connector (4)
22	Remove bolts (5)
23	Disconnect connector (6) from evaporator temperature sensor
24	Remove condensed water hose (7)
25	Remove heater housing (1)	 Installation: Ensure that electrical line (3) is routed correctly to heater housing (1). Check seals of air outlet and inlet openings, replace if necessary.
26	Install in the reverse order
27	Set time on instrument cluster
28	Set time on timer for auxiliary heater	MODEL 909 with CODE H12 (Auxiliary heater (warm water)) with CODE HH9 (Regulated air conditioning (Tempmatic)) MODEL 909 with CODE H86 (Chronometer with relay for independent heating) with CODE HH9 (Regulated air conditioning (Tempmatic)) MODEL 909 with CODE HH9 (Regulated air conditioning (Tempmatic)) with CODE HZ5 (10 kW warm water auxiliary heater with timer)
29	Connect diagnostic system and perform quick test
			AD00.00-D-2000-04F
		 Delete DTC memory if necessary.

 Refrigerant lines

Number	Designation		MODEL 909 with CODE HH9 (Regulated air conditioning (Tempmatic))
BA83.30-N-1008-02A	Screw/bolt, refrigerant line connector block on evaporator	Nm	5 (0,5)

129 589 00 91 00

Record plug

Referenced documents

ad0000d200004f Connect STAR DIAGNOSIS and read out fault memory
ah5410p000101a Notes on battery
ah5410p000101a
ah8330n000301a Notes on handling refrigerant R134a
ah8330n000401a Procedure for a damaged or leaky air conditioning system
ah8330n000501a Protect air conditioning circuit and components from moisture when carrying out repair work
ar5425d1382f Removing and installing electrical center
ar5430d6015f Remove/install instrument cluster
ar6810d1000f Remove/install dashboard
ar6810d1020f Remove/install dashboard top section
ar6810d1110f Remove/install air nozzles in instrument panel
ar6810d1190f Remove/install cover on dashboard center section
ar6810d1195f Removing and installing drawer in instrument panel
ar6810d1515f Remove/install stowage compartment above glove compartment
ar6810d1550f Remove/install cover on instrument cluster
ar8262d7833f Removing and installing loudspeaker in instrument panel
ar8310d001003f Detach/attach ventilation box
ar8310d140001f Adjust air distribution control cables
ar8325d100001fa Remove and install connections from and to front of heater housing
ar8325d100002f Remove air ducts
ar8325d1124fa Remove and install air conditioning control and operating unit
ar8330d6520f Remove/install fluid reservoir
as5410z000101a Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of
as8300z000101a 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.