Remove/install refrigerant line between refrigerant compressor and front connecting point

AR83.30-S-7820EA

Remove/install refrigerant line between refrigerant compressor and front connecting point

22.08.2019

Model

447 with engine 654

with code HH4 (THERMOTRONIC automatic climate control)

Model

447 with engine 654

with code HH9 (Air conditioner, automatic heater control)

Shown on model 447.8 with code HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear)

1

Refrigerant line

5

Screw

1.1

Refrigerant line

6

Refrigerant line

2

Expansion rivet

7

Screw

3

Electrical connector

8

Screw

4

Brake fluid reservoir

9

Refrigerant line

 Danger

Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures

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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0007-01A

 Warning

Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts

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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0006-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

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 R1234yf

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Discharge air conditioning system.

Model 447 except code HX1 (R-1234yf refrigerant)

AR83.30-S-1760E

Model 447 with code HX1 (R-1234yf refrigerant)

AR83.30-S-1760EF

2

Detach expansion rivet (2).

3

Disconnect electrical connector (3).

4

Detach brake fluid reservoir (4) and place to one side.

 Do not detach the feed hoses to the master brake cylinder.

5

Remove screw (5).


Counterhold refrigerant lines (1, 6) at connecting point using a suitable tool.
Otherwise, damage may occur to the refrigerant lines (1, 6).

 Threaded connection, refrigerant line to refrigerant line

*BA83.30-N-1017-01A

6

Detach refrigerant line (1) from connecting point and seal openings with suitable stop plugs.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing ring and coat with compressor oil.

 Record plug

*129589009100

7

Remove lower engine compartment paneling.

AR61.20-S-1105E

8

Remove screw (7).

 Bolt, refrigerant line on refrigerant compressor

*BA83.30-N-1012-01A

9

Detach refrigerant line (1) from refrigerant compressor and seal openings with suitable stop plugs.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing ring and coat with compressor oil.

 Record plug

*129589009100

10

Remove screw (8).

MODEL 447 with CODE HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear)


Counterhold refrigerant lines (1.1, 9) at connecting point using a suitable tool.
Otherwise, damage may occur to the refrigerant lines (1.1, 9).

 Threaded connection, refrigerant line to refrigerant line

*BA83.30-N-1017-01A

11

Detach refrigerant line (1.1) from connecting point and seal openings with suitable stop plugs.

MODEL 447 with CODE HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing ring and coat with compressor oil.

 Record plug

*129589009100

12.1

Remove refrigerant line (1) downwards.

Model 447 except code HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear)


Handle refrigerant line (1) carefully.
Otherwise, the refrigerant line (1) or the adjacent components could be damaged.

12.2

Remove refrigerant lines (1, 1.1) downwards.

MODEL 447 with CODE HZ7 (Semi-automatically controlled air conditioning, TEMPMATIC in rear)


Handle refrigerant lines (1, 1.1) carefully.
Otherwise, the refrigerant lines (1, 1.1) or the adjacent components could be damaged.

13

Install in the reverse order.

 Air conditioning

Number

Designation

Model 447 with engine 654

BA83.30-N-1012-01A

Bolt, refrigerant line on refrigerant compressor

Nm

20

 Air conditioning

Number

Designation

Model 447 with engine 654

BA83.30-N-1017-01A

Threaded connection, refrigerant line to refrigerant line

Nm

20