Remove/install heater housing

AR83.25-D-1000NA

Remove/install heater housing

16.2.12

 

Remove/Install

 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 discharged.

AS83.00-Z-0001-01A

1

Discharge air conditioning system



Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

 Danger!

Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices

No fire, sparks, open flames or smoking.

Wear acid-resistant gloves and clothing and safety glasses with side guards.

Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.

Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

2

Disconnect ground cable from battery

3

Remove radio

AR82.60-D-7502A

4

Remove glove compartment

5

Remove cover from instrument cluster

AR68.10-D-1550A

6

Remove instrument cluster

AR54.30-D-6015C

7.1

Remove stowage compartment above glove compartment

Except code SA6, front passenger airbag.

AR68.10-D-1515A

7.2

Remove front passenger airbag unit

With code SA6, front passenger's airbag.

AR91.60-D-0680B

8.1

Remove cover for air nozzle on passenger side

With code SA6, front passenger's airbag.

AR68.10-D-1090A

9

Remove speaker

AR82.62-D-7833A

10

Remove center section of instrument panel

AR68.10-D-1030B

11

Remove air conditioning control and operating unit

 Installation: If control cables for air distribution have been removed:

AR83.25-D-1124NA

Adjust air distribution cables.

AR83.10-D-1400-01A

12

Remove instrument panel top section

AR68.10-D-1020NA

13

Remove central electric unit

AR54.25-D-1382A

14

Remove air nozzles on dashboard

AR68.10-D-1110A

15

Remove instrument panel

AR68.10-D-1000NA

16

Remove ventilation box and lay down on engine.

AR83.10-D-0010-03A

17

Position suitable catch reservoir for coolant below vehicle

18

Remove connections from heater at front

AR83.25-D-1000-01A



*BA83.30-N-1008-02A

19

Remove air ducts

AR83.25-D-1000-02A

20

Disconnect plug (2) from exit temperature sensor

21

Expose lead (3) and disconnect connector (4)

22

Unscrew bolts (5)

23

Disconnect connector (6) from evaporator temperature sensor

24

Remove condensation water hose (7)

25

Remove heater housing (1)

 Installation: Ensure that line (3) to ventilation box is routed properly. Check seals for the air outlet and inlet openings, replace if necessary.

26

Install in the reverse order

27.1

Set time on instrument cluster

Except code J19, tachograph.

28.1

Set time on timer for auxiliary heater

With code H12, hot-water auxiliary heater or code H86, timer for auxiliary heater.

29

Enter radio code

30

Read out fault memory

 If necessary, delete DTC memory.

31

Evacuate the air conditioning system, refill it, and then check the system to make sure that it functions correctly and does not leak.

Number

Designation

Models
901.6, 902.6, 903.6, 904.6,
905.6
with Code HH9

Model
WD1/WD2/
WD3/WD6/
WD7/XD1/
XD2/XD3/
XD4/XD5/
XD6/XD7/
YD1/YD2/
YD3/YD4/
YD5/YD6/YD7
with code HH9

BA83.30-N-1008-02A

Screw for refrigerant line connector block on evaporator

Nm

5 (0,5)

5 (0,5)