Remove/install refrigerant line between condenser and interior expansion valve

AR83.30-S-7825EF

Remove/install refrigerant line between condenser and interior expansion valve

22.08.2019

Model

447 with engine 622

with code HH4 (THERMOTRONIC automatic climate control)

Model

447 with engine 622

with code HH9 (Air conditioner, automatic heater control)

Shown on model 447 with code HH4 (THERMOTRONIC automatic climate control) and with code HZ7 (Semi-automatically controlled air conditioning system, TEMPMATIC in rear)

2

Refrigerant line

2.1

Refrigerant line section

2.2

Refrigerant line section

2.3

Refrigerant line section

Shown on model 447 with code HH4 (THERMOTRONIC automatic climate control) and with code HZ7 (Semi-automatically controlled air conditioning system, TEMPMATIC in rear)

2.1

Refrigerant line section

5

Screw

11

Retaining clamp

2.2

Refrigerant line section

7

Retaining clamps

12

Refrigerant line

2.3

Refrigerant line section

8

Condenser

13

Refrigerant line

3

Nut

9

Screw

14

Bracket

4

Nut

10

Retaining clamp

2.2

Refrigerant line section

6

Electrical connector

7

Retaining clamps

N30/4

Electronic Stability Program (ESP) control unit

 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

Topical note

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

AH83.30-N-0005-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Remove front bumper

AR88.20-S-2000E

2

Drain 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

3

Remove air-water duct

AR83.25-S-1410E

4

Place brake fluid reservoir out of working area


Make sure that no brake fluid escapes from the brake fluid reservoir.
Otherwise, escaping brake fluid may cause paint damage.

5

Unscrew nut (3)

 Nut, refrigerant line to expansion valve

*BA83.30-N-1001-01A

6

Remove refrigerant line sections (2.1, 2.2) from expansion valve



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings and moisten with compressor fluid.

7

Seal refrigerant line sections (2.1, 2.2) and the connections on the expansion valve using stop plugs

 Record plug

*129589009100

8

Remove bolt (5)

 Threaded connection, refrigerant line to refrigerant line

*BA83.30-N-1017-01A

9

Remove refrigerant line section (2.1) from refrigerant line (12)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

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

10

Seal refrigerant line section (2.1) and refrigerant line (12) using stop plugs

 Record plug

*129589009100

11

Disconnect electrical connector (6) from Electronic Stability Program (ESP) control unit (N30/4)

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

12

Unscrew nuts from retaining clamps (7)

13

Remove screw/bolt (9)

 Bolt, refrigerant line to refrigerant condenser

*BA83.30-N-1020-01A

14

Remove refrigerant line section (2.2) from condenser (8)



Condenser with connection lines modified

BT83.30-S-0003-01E



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

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

15

Seal refrigerant line section (2.2) and connection fittings on condenser (8) using stop plugs

 Record plug

*129589009100

16

Raise vehicle

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

AR00.60-S-1000E

17

Unscrew nut from retaining clamp (10)

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

18

Unscrew nut (4)

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

 Threaded connection, refrigerant line to refrigerant line

*BA83.30-N-1017-01A

19

Remove refrigerant line section (2.3) from refrigerant line (13)

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

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

20

Seal refrigerant line section (2.3) and refrigerant line (13) using stop plugs

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

 Record plug

*129589009100

21

Lower vehicle

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

22

Remove screw from retaining clamp (11)

Model 447 with engine 622
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 622
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

23

Undo nuts on bracket (14)

24

Remove refrigerant line (2) upwards

25

Install in the reverse order

 Air conditioning

Number

Designation

Model 447 with engine 622

BA83.30-N-1001-01A

Nut, refrigerant line to expansion valve

Nm

8

 Air conditioning

Number

Designation

Model 447 with engine 622

BA83.30-N-1017-01A

Threaded connection, refrigerant line to refrigerant line

Nm

20

 Air conditioning

Number

Designation

Model 447 with engine 622

BA83.30-N-1020-01A

Bolt, refrigerant line to refrigerant condenser

Nm

12