Remove/install second refrigerant compressor

AR83.55-D-5312TSR

Remove/install second refrigerant compressor

04.12.2019

Engine

642 in model 907.6/7

with code HK4 (Rear air conditioning, reinforced)

Engine

651 in model 907.6/7

with code HK4 (Rear air conditioning, reinforced)

Engine

654.9 in model 907.6

with code HK4 (Rear air conditioning, reinforced)

Shown on engine 642

1

Poly-V-belt

2

Bolts

3

Refrigerant line

4

Refrigerant line

5

Electrical connector

6

Refrigerant compressor

Shown on ENGINE 651

1

Poly-V-belt

2

Screw

3

Refrigerant line

4

Refrigerant line

5

Electrical connector

6

Refrigerant compressor

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

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 roof A/C system.

AR83.50-D-0002TSR

 Installation:
If the refrigerant compressor (6) is replaced, additional compressor oil must not be added.
Otherwise, the roof-mounted air conditioning system may malfunction or be damaged.

2

Remove poly-V-belt (1).

Engine 654.9

AR13.21-D-0161TSM

Engine 651

AR13.21-D-0161TSR

Engine 642

AR13.21-D-0161TSV

3

Disconnect electrical connector (5).

4

Remove refrigerant lines (3, 4).



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Seal connections.

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

 Bolt, refrigerant line to refrigerant compressor

*BA83.30-N-1002-01TS

 Record plug

*129589009100

5

Remove refrigerant compressor (6).

 To do this, remove screws (2).

 Bolt, A/C compressor to major assembly carrier

*BA83.55-N-1001-02TS

6

Install in the reverse order.

 Air conditioning

Number

Designation

Model 907 with engine 654.9

Model 907 with engine 274, 642, 651
Model 910 with engine 651

BA83.30-N-1002-01TS

Bolt, refrigerant line to refrigerant compressor

Nm

20

20

 Refrigerant compressor

Number

Designation

Model 907 with engine 654.9

Model 907 with engine 651

BA83.55-N-1001-02TS

Bolt, A/C compressor to major assembly carrier

Nm

20

20

 Refrigerant compressor

Number

Designation

Model 907 with engine 642

BA83.55-N-1001-02TS

Bolt, A/C compressor to major assembly carrier

Nm

20