Refrigerant compressor, remove/install

AR83.55-S-5310F

Refrigerant compressor, remove/install

10.03.2020

Model

447 with engine 780.701

Modification notes

10.03.2020

Work procedure revised

The whole document

1

Refrigerant compressor

3

High-voltage plug

2

Electrical connector

4

Screw

 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.

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

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

AH83.30-N-0005-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

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

AH00.00-Z-0300-01A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

 

Remove/install

1

Empty refrigerant circuit.

Model 447 with engine 780.701
with code HH9 (Air conditioner, automatic heater control)
except code HX1 (Refrigerant R-1234yf)

AR83.30-S-1760E

Model 447 with engine 780.701
with code HH9 (Air conditioner, automatic heater control)
with code HX1 (Refrigerant R-1234yf)

AR83.30-S-1760EF

2

Perform power disconnect of high-voltage on-board electrical system.

AR47.70-S-1000F

3

Remove refrigerant line between heat exchanger expansion valve and refrigerant compressor (1) from refrigerant compressor (1).

Model 447 with engine 780.701
with code HH9 (Air conditioner, automatic heater control)

AR83.30-S-7842FA

4

Remove refrigerant line between condenser and refrigerant compressor (1) from refrigerant compressor (1).

Model 447 with engine 780.701
with code HH9 (Air conditioner, automatic heater control)

AR83.30-S-7840F

5

Disconnect electrical connection (2).

6

Release high-voltage plug (3) on both sides and disconnect from refrigerant compressor (1).

7

Cover high-voltage connections with suitable protective covers.

 Set of protective covers

*001589019100

8

Remove screws/bolts (4).

 Bolt, electric refrigerant compressor to electric motor

*BA83.55-N-1001-02F

9

Remove refrigerant compressor (1) upward out of engine compartment.


Carefully remove and insert refrigerant compressor (1).
Otherwise, the refrigerant compressor (1) or adjacent components could be damaged.

 WIS Service Media
wsm://04_201800_32

10

Install in the reverse order.

11

Connect diagnostic system and perform break-in of refrigerant compressor (1).

If refrigerant compressor (1) was replaced.



AD00.00-S-2000-04E

12

Disconnect vehicle diagnosis system.

If refrigerant compressor (1) was replaced.

 Refrigerant compressor

Number

Designation

Model 447 with engine 780.701/702

BA83.55-N-1001-02F

Bolt, electric refrigerant compressor to electric motor

Nm

20