Remove/install refrigerant line between condenser and interior expansion valve

AR83.30-S-7825E

Remove/install refrigerant line between condenser and interior expansion valve

12.04.2019

Model

447 with engine 651

with code HH4 (THERMOTRONIC automatic climate control)

Model

447 with engine 651

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

1

Air duct segment

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

4

Nut

8

Retaining clamps

2.2

Refrigerant line section

5

Nut

9

Refrigerant line

2.3

Refrigerant line section

6

Nut

10

Condenser

3

Screw

7

Retaining clamp

11

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

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

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

2

Remove air-water duct

AR83.25-S-1410E

3

Remove air filter housing

AR09.10-S-1150E

4

Release radiator grille in upper area far enough until the air duct segment (1) is exposed

AR88.00-S-2115E

5

Remove air duct segment (1)

6

Unscrew bolt (3)

 Threaded connection, refrigerant line to refrigerant line

*BA83.30-N-1017-01A

7

Remove refrigerant line section (2.1) from refrigerant line (9)



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

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

8

Seal refrigerant line section (2.1) and refrigerant line (9) using stop plugs

 Record plug

*129589009100

9

Unscrew nut (4)

 Nut, refrigerant line to refrigerant condenser

*BA83.30-N-1019-01A

10

Remove refrigerant line section (2.2) from condenser (10)



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.

11

Seal refrigerant line section (2.2) and connection fittings on condenser (10) using stop plugs

 Record plug

*129589009100

12

Unscrew nut (5)

 Nut, refrigerant line to expansion valve

*BA83.30-N-1001-01A

13

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.

14

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

 Record plug

*129589009100

15

Remove lower engine compartment paneling

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

AR61.20-S-1105E

16

Unscrew nut of lower retaining clamp (7)

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

17

Unscrew nut(6)

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
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

18

Remove refrigerant line section (2.3) from refrigerant line (11)

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
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.

19

Seal refrigerant line section (2.3) and refrigerant line (11) using stop plugs

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

 Record plug

*129589009100

20

Lower vehicle

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

21

Remove screw from upper retaining clamp (7)

Model 447 with engine 651
with code HH4 (THERMOTRONIC automatic climate control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
Model 447 with engine 651
with code HH9 (Air conditioner, automatic heater control)
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

22

Unscrew nuts from retaining clamps (8)

23

Remove refrigerant line (2) upwards

24

Install in the reverse order

 Air conditioning

Number

Designation

Model 447 with engine 274, 651
Model 448 with engine 274

BA83.30-N-1001-01A

Nut, refrigerant line to expansion valve

Nm

8

 Air conditioning

Number

Designation

Model 447 with engine 274, 651
Model 448 with engine 274

BA83.30-N-1017-01A

Threaded connection, refrigerant line to refrigerant line

Nm

8

 Air conditioning

Number

Designation

Model 447 with engine 274, 651
Model 448 with engine 274

BA83.30-N-1019-01A

Nut, refrigerant line to refrigerant condenser

Nm

12