Remove/install roof air conditioner refrigerant line from interior compartment connecting point to expansion valves

AR83.50-D-8514CA

Remove/install roof air conditioner refrigerant line from interior compartment connecting point to expansion valves

10.10.2012

MODEL

900

with CODE HK4 (Rear air conditioning, reinforced)

1

Cross bow

E

Refrigerant line (pressure side)

2

Nut

L

Refrigerant line (intake side)

3

Screw

S

Refrigerant line (pressure side)

R

Refrigerant line (pressure side)

T

Refrigerant line (intake side)

4

Expansion valve

7

Bracket

R

Refrigerant line (pressure side)

5

Expansion valve

8

Screw

S

Refrigerant line (pressure side)

6

Screw

9

Bracket

T

Refrigerant line (intake side)

5

Expansion valve

L

Refrigerant line (intake side)

T

Refrigerant line (intake side)

10

Sealing ring

R

Refrigerant line (pressure side)

11

Sealing ring

S

Refrigerant line (pressure side)

 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

 Danger !

Risk of death caused by falling from vehicle roof. Risk of injury to other persons caused by falling objects during work in roof area.

AS65.00-Z-0002-01A



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

AH83.30-N-0005-01A



Procedure for a damaged or leaky air conditioning system

All models

AH83.30-N-0004-01A



Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Drain air conditioning system

MODEL 900
with CODE HK4 (Rear air conditioning, reinforced)

MODEL 900.633/65
with CODE HK4 (Rear air conditioning, reinforced)
without CODE HH9 (Regulated air conditioning (Tempmatic))

AR83.30-D-1760WE

 Installation: Evacuate air conditioning system, charge it and then check system for proper operation and for leaks.

2

Remove headliner

AR68.30-D-4300CH

 Installation: Mount headliner only after charging and checking air conditioning system.

3

Unscrew nut (2)

4

Remove roof air conditioning cover

AR83.30-D-1300CH

 Installation: Mount cover for roof air conditioning only after charging and checking the air conditioning system.

5

Remove bitumen insulation tape in area of connecting point for refrigerant line (T) to passenger compartment (arrows)

 Installation: Carefully wrap new bitumen insulation tape around the area surrounding the connecting point of the refrigerant line (T) to the passenger compartment (arrows).

Insulation

*BR00.45-Z-1062-01A

6

Unscrew screw/bolt (3)

7

Remove bitumen insulation tape over expansion valves (4 and 5)

 Installation: Carefully wrap new bitumen insulation tape around area surrounding expansion valves (4 and 5).

Insulation

BR00.45-Z-1062-01A

8

Unscrew screw/bolt (6) and remove bracket (7)

9

Unscrew screw/bolt (8) and remove bracket (9)

10

Remove refrigerant line (T)

 Installation: Mount refrigerant line (T) with new sealing rings (11). Replace sealing rings of refrigerant line (S) at expansion valves (4 and 5) and sealing ring (10) of refrigerant line (L).
Coat sealing rings with compressor oil.

11

Close off openings of refrigerant line (T), expansion valves (4 and 5) and refrigerant line (L) using stop plugs

 Record plug

*129589009100

12

Replace fluid reservoir

AR83.50-D-5080CH

 After completing the work at the open refrigerant circuit, the accumulator must be replaced.

13

Install in the reverse order

Repair materials

Number

Designation

Order number

BR00.45-Z-1062-01A

Insulation

A 901 831 13 96