Remove/install expansion valve

AR83.30-S-5520E

Remove/install expansion valve

20.02.2020

Model

447

with code HH4 (THERMOTRONIC automatic climate control)

Model

447

with code HH9 (Air conditioner, automatic heater control)

Model

448

Shown on model 447 with ENGINE 651

1

Refrigerant lines

2

Nut

3

Expansion valve

4

Bolts

Shown on model 447 with engine 622

5

Bracket

6

Nuts

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.Typ 447 mit Motor 780

AS00.00-Z-0035-01A

 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

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

Typ 447 mit Motor 780

AH00.00-Z-0300-01A

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

Discharge air conditioning system.

Model 447 except code HX1 (R-1234yf refrigerant), model 448

AR83.30-S-1760E

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

AR83.30-S-1760EF

2

Remove air filter housing.

Model 447 with engine 274, 622, 651, model 448 with engine 274

Model 447 with engine 274, model 448 with engine 274

AR09.10-S-1150EG

MODEL 447 with engine 622

AR09.10-S-1150EF

Model 447 with engine 651

AR09.10-S-1150E

3

Remove the fuel injection system control unit.

Model 447 with engine 622.9

AR07.08-S-7008EF

4

Unscrew nuts (6) and remove holder (5).

Model 447 with engine 622.9

5

Remove nut (2).

Model 447 with engine 274, model 447 with engine 622, model 447 with engine 651, model 447 with engine 654, model 448

 Nut, refrigerant line to expansion valve

*BA83.30-N-1001-01A

6.1

Remove refrigerant lines (1) and place to one side.

Model 447 with engine 274, model 447 with engine 622, model 447 with engine 651, model 447 with engine 654, model 448



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Seal refrigerant lines (1).

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

 Record plug

*129589009100

6.2

Remove refrigerant lines (1).

Model 447 with engine 780.701/702
* Applies to Europe only

AR83.30-S-7835F

7

Unscrew screws (4) and remove expansion valve (3).



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Plug refrigerant lines of evaporator.

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

 Model 447 with engine 780.701/702Screw, expansion valve to clamping claw for evaporator refrigerant lines

*BA83.30-N-1016-01FA

 Model 447 with engine 274, 651, model 447 with engine 622, model 447 with engine 654, model 448 with engine 274Screw, expansion valve to clamping claw for evaporator refrigerant lines

*BA83.30-N-1002-01A

 Record plug

*129589009100

8

Install in the reverse order.

 Air conditioning

Number

Designation

Model 447 with engine 654

Model 447 with engine 622

BA83.30-N-1001-01A

Nut, refrigerant line to expansion valve

Nm

14

8

 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 654

Model 447 with engine 622

BA83.30-N-1002-01A

Screw, expansion valve to clamping claw for evaporator refrigerant lines

Nm

8

8

 Air conditioning

Number

Designation

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

BA83.30-N-1002-01A

Screw, expansion valve to clamping claw for evaporator refrigerant lines

Nm

8

 Air conditioning

Number

Designation

Model 447 with engine 780.701/702 with code HH9,
Model 447 with engine 780.702 with code HH4

BA83.30-N-1016-01FA

Screw, expansion valve to clamping claw for evaporator refrigerant lines

Nm

8