Remove/install roof air conditioner refrigerant line from filter drier to air conditioner housing connecting point

AR83.50-D-6512CA

Remove/install roof air conditioner refrigerant line from filter drier to air conditioner housing connecting point

21.07.2017

Model

900

with code HK4 (Rear air conditioning, reinforced)

1

AC housing

4

Passage

7

Bracket

2

Condenser

5

Fluid reservoir

8

Separation point

3

Union nut

6

Screw

Q

Refrigerant line (pressure side)

1

AC housing

5

Fluid reservoir

Q

Refrigerant line (pressure side)

3

Union nut

9

Sealing ring

4

Passage

10

Sealing ring

 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

Topical note

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

AH83.30-N-0005-01A

Topical note

Procedure for a damaged or leaky air conditioning system

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)
except code HH9 (Air conditioner, automatic heater control)

AR83.30-D-1760WE

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

2

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.

3

Remove condenser fan of roof air conditioning

AR83.50-D-5060CH

4

Unscrew union nut (3)

5

Unscrew bolt (6) and remove bracket (7)

6

Remove duct (4) from air conditioner housing (1)

 Installation: Coat duct (4) with lubricant.
Check that duct (4) is seated correctly.

Grease, silicone-based, 100 g

*BR00.45-Z-1008-06A

7

Remove refrigerant line (Q) and guide out of air conditioner housing (1)



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

 Installation: Mount refrigerant line (Q) with new sealing rings (9 and 10). Replace sealing ring of refrigerant line at connecting point (8).
Coat sealing rings with compressor oil.

8

Close off openings of refrigerant line (Q), fluid reservoir (5) and connecting point (8) using stop plugs

 Record plug

*129589009100

9

Replace fluid reservoir

AR83.50-D-5080CH

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

10

Install in the reverse order

Repair materials

Number

Designation

Order number

BR00.45-Z-1008-06A

Grease, silicone-based, 100 g

A 001 989 28 51