Remove/install heater housing

AR83.25-D-1000B

Remove/install heater housing

13.7.99

14.10.02

Repair method optimized.

Step 18

 

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

AR83.30-D-1760A



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

AH83.30-N-0005-01A

2

Disconnect ground cable from battery

3.1

Remove cover of radio installation slot

With code ER0, radio preinstallation

 Unclip electrical leads from cover

3.2

Remove radio

With code EF5, EF6 or EF7, Radio Sound 10, 20 or 30.

AR82.60-D-7502A

4

Remove glove compartment

5.1

Remove stowage compartment below pen holder

Except for codes J19/ J28, tachograph.

5.2

Remove tachograph

With codes J19/ J28, tachograph.

AR54.30-D-0001A

6

Remove cover from instrument cluster

AR68.10-D-1550A

7

Remove instrument cluster

AR54.30-D-6015C

8.1

Remove stowage compartment above glove compartment

Except code SA6, front passenger airbag.

AR68.10-D-1515A

8.2

Remove front passenger airbag

With code SA6, front passenger's airbag.

AR91.60-D-0680B

9.1

Remove cover for air nozzle on passenger side

With code SA6, front passenger's airbag.

AR68.10-D-1090A

10

Remove speaker

AR82.62-D-7833A

11

Remove cover on center part of instrument panel

AR68.10-D-1190A

12

Remove air conditioning control and operating unit

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

AR83.25-D-1124A

Adjust air distribution cables.

AR83.10-D-1400-01A

13

Remove drawer

AR68.10-D-1195A

14

Remove instrument panel top section

AR68.10-D-1020B

15

Remove central electric unit

AR54.25-D-1382A

16

Remove air nozzles on dashboard

AR68.10-D-1110A

17

Remove instrument panel

AR68.10-D-1000A

18

Remove ventilation box and lay down on engine.

AR83.10-D-0010-03A

19

Position suitable catch reservoir for coolant below vehicle

20

Remove connections from heater at front

AR83.25-D-1000-01A



*BA83.30-N-1008-02A

21

Remove air ducts

AR83.25-D-1000-02A

22

Disconnect plug (2) from exit temperature sensor

23

Expose lead (3) and disconnect connector (4)

24

Unscrew bolts (5)

25

Disconnect connector (6) from evaporator temperature sensor

26

Remove condensation water hose (7)

27

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.

28

Install in the reverse order

29.1

Set time on instrument cluster

Except for codes J19/ J28, tachograph.

30.1

Set time on timer for auxiliary heater

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

31

If necessary, code radio

32

Read out fault memory

 If necessary, delete DTC memory.

33

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

AR83.30-D-1760A

Number

Designation

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

BA83.30-N-1008-02A

Screw for refrigerant line connector block on evaporator

Nm

5 (0,5)