Remove/install refrigerant pressure and temperature sensor

AR83.30-S-5435EA

Remove/install refrigerant pressure and temperature sensor

01.08.2019

Model

447 with engine 654.9

with code HH4 (THERMOTRONIC automatic climate control)

Model

447 with engine 654.9

with code HH9 (Air conditioner, automatic heater control)

Shown with removed left air duct segment

1

Pressure and temperature sensor

2

Electrical connector

3

O-ring

 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

Discharge air conditioning system.

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

AR83.30-S-1760EF

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

AR83.30-S-1760E

2

Remove front bumper.

AR88.20-S-2000E

3

Disconnect electrical connection (2).

4

Remove pressure and temperature sensor (1).



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Coat O-ring (3) with compressor oil.

 Refrigerant pressure sensor to refrigerant condenser or to refrigerant line for refrigerant condenser to refrigerant reservoir

*BA83.30-N-1008-01A

5

Seal opening on refrigerant condenser using a suitable stop plug.

 Record plug

*129589009100

6

Check O-ring (3) for damage and wear.

If pressure and temperature sensor (1) is still used.

If there is a problem:



Replace pressure and temperature sensor (1).

7

Install in the reverse order.

 Air conditioning

Number

Designation

Model 447 with engine 654

BA83.30-N-1008-01A

Refrigerant pressure sensor to refrigerant condenser or to refrigerant line for refrigerant condenser to refrigerant reservoir

Nm

10