Remove and install rear AC housing

AR83.50-P-9020M

Remove and install rear AC housing

3.12.97

 

Remove/Install

Danger!

Risk of explosion from welding or soldering work on closed air conditioning system. Risk of poisoning. Inhaling overheated refrigerant vapors may be toxic. Risk of injury from skin and eye contact with liquid refrigerant.

Do not carry out any welding work on the closed air conditioning system or in the surrounding area. No smoking or open flames. Wear eye protection 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



Procedures if air conditioning system is damaged or leaking

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

Drain air conditioning (recycle), evacuate, charge, check for leakage

 Resupply suctioned off quantity of compressor oil to refrigerant circuit when filling air conditioning system (new oil)

Danger!

Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. 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 bottles.

Wear protective gloves, protective clothing and eye protection.

AS20.00-Z-0001-01A

2

Reduce pressure in cooling system

 To do this, turn radiator cap into position "1" and reseal

3

Drain coolant, pour in

AR20.00-P-1142HA

4

Remove front seats

until 31.8.02

AR91.10-P-1000M

as of 1.9.02

AR91.10-P-1000MB

5

Remove rear AC control module (N22/4)

AR83.50-P-9070M

6

Remove center console (1)

Except models 220.074/ 174.

AR68.20-P-2000M

Only models 220.074/ 174.

AR68.20-P-2000AM

7

Spit back left and right floor covering

8

Unscrew bolt (2), close heat exchanger



*BA83.50-P-1004-01A

9

Unplug connector (3)

10

Unscrew bolt (4), detach refrigerant lines (5)

 Plug openings (parts kit)

Installation:

Replace O-rings.

Moisten thread with compressor oil.



*BA83.50-P-1003-01A

11

Unclip and detach air ducts (7)

12

Unscrew 4 bolts (6)

13

Remove rear air conditioning module (8).

14

Replace receiver/drier

AR83.30-P-6520M

15

Install in the reverse order

 After completing the operations correct engine coolant level.

Perform leakage test.

Number

Designation

Model 220

BA83.50-P-1003-01A

Separation point of refrigerant lines at rear air conditioning evaporator

NM

8

BA83.50-P-1004-01A

Separation point of coolant lines to rear air conditioning heat exchanger

NM

8