Remove/install heater housing

AR83.25-W-1000NA

Remove/install heater housing

6.11.13

MODEL

967

1

Cap

2

Coolant hose

3

Screw

4

Coolant hose

5

Clip

6

Air duct at top left

7

Air duct at top right

8

Air duct at center

9

Strut

10

Cable tie

11

Heater housing

12

Electrical connector

13

Fresh air vent

14

Driver footwell air duct

14

Driver footwell air duct

17

Front passenger footwell air duct

15

Clip

18

Retaining bracket

11

Heater housing

19

Drain hose

 Danger !

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from 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

 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.

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



Notes on coolant

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

AH83.30-N-0005-01A



Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Switch off ignition

2

Drain air conditioning system

Only for vehicles with code D6F (Air conditioning).

AR83.30-W-1760NA

3

Remove refrigerant lines at expansion valve

Only for vehicles with code D6F (Air conditioning).

AR83.30-W-5520NA

4

Open cap (1) on coolant expansion reservoir and relieve pressure in coolant circuit

5

Clamp off coolant hose (2) using a clamp

 Clamp

*000589543700

6

Remove screw/bolt (3) at retaining plate

 Bolt, retaining plate of coolant hoses to heat exchanger

*BA83.30-N-1004-01NA

7

Disconnect coolant hoses (2, 4) with retaining plate and place to one side

 Installation: Install new seals.

8

Remove dashboard

Vehicles with code D4A (Standard cockpit)

AR68.10-W-1000K

9

Open clamps (5)

10

Remove air duct at top left (6) and top right (7)

 Installation: Check seals for damage, replace if necessary.

11

Remove air duct at center (8)

 Installation: Check seal for damage and replace, if necessary.

12

Remove struts (9)

13

Remove cable tie (10) at heater housing (11)

14

Disconnect electrical connection (12)

15

Remove air vent (13) in driver footwell

 Installation: Air vent (13) must engage in driver footwell air duct (14).

16

Open clamps (15)

17

Remove driver footwell air duct (14)

 Installation: Check seals for damage, replace if necessary.

18

Remove front passenger footwell air duct (17)

 Installation: Front passenger footwell air duct (17) must engage in front passenger footwell air vent. Check seals for damage, replace if necessary.

19

Fold away retaining bracket (18) of wires and unhook wires at heater housing (11)

20

Remove screws/bolts at attachment points at heater housing (11)

21

Lift heater housing (11) and detach drain hose (19)

22

Remove heater housing (11)

 Oil filling capacity of refrigerant circuit must be topped up when heater housing (11) is replaced.

 Additional oil filling quantity after replacing evaporator

*BF83.55-N-1004-02NA

23

Install in the reverse order

24

Check heater for proper function and leakage

 Air conditioning

Number

Designation

MODEL 967

BA83.30-N-1004-01NA

Bolt, retaining plate of coolant hoses to heat exchanger

Nm

7

 Refrigerant compressor

Number

Designation

Model 967

BF83.55-N-1004-02NA

Additional oil filling quantity after replacing evaporator

Compressor oil

cm3

35

Sheet

BB00.40-P-0362-00A