Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

AR83.30-P-1760FR

Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

27.06.2019

Model

257, 290

Shown on model 257

1

Plugs

3

Filling connection

2

Filling connection

 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

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

Draining

1

Unscrew plugs (1).

2

Connect filler connections (2, 3) of air conditioning service unit to the corresponding service connections.



000 588 04 82 00 Air conditioning service unit R134a

WS83.00-P-0031B



000 588 10 82 00 R1234yf air conditioning service unit

WS83.00-P-0034B

 When operating the air conditioning service unit, proceed in accordance with the operator's manual from the manufacturer.

3

Extract refrigerant.

4

Note down quantity of extracted refrigerant as well as compressor oil.

5

Check receiver drier for re-usability.

If there is a problem,



replace receiver drier.

Model 257, 290 with engine 256

AR83.30-P-6521MSA

Model 257 with engine 264

AR83.30-P-6521MSB

Model 257 with engine 654, 656

AR83.30-P-6521OIB

Model 290 with engine 177

AR83.30-P-6521FRX

Evacuate

6

Clean refrigerant and evacuate refrigerant circuit.

7

Conduct vacuum test using air conditioning service unit.

Filling

8

Add new compressor oil to the refrigerant circuit according to the oil filling capacity noted during extraction.



Compressor oils (specification 362.1)

BB00.40-P-0362-01A


Only use the approved compressor oil.
If it is proven that a different compressor oil has been used, we will refuse to reimburse costs within the warranty and goodwill period. Daimler AG reserves the right to perform reexaminations.


Correct oil filling quantity in refrigerant circuit.
An incorrectly measured oil filling capacity leads to damage to the refrigerant compressor.

 Depending on the repair case, the oil filling quantity may need to be adjusted accordingly.

 Model 257 with engine 256, 264, 654, 656Additional quantity of oil to be added when system suddenly looses fluid (e.g. line ruptured)

*BF83.55-P-1002-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of condenser

*BF83.55-P-1003-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of evaporator

*BF83.55-P-1004-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of suction line

*BF83.55-P-1005-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of pressure line

*BF83.55-P-1006-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of refrigerant compressor

*BF83.55-P-1007-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity with detectable leakage

*BF83.55-P-1008-02D

 Model 257 with engine 256, 264, 654, 656Additional oil filling quantity after replacement of desiccant cartridge

*BF83.55-P-1009-02D

 Model 290 with engine 177, 256Additional filling quantity after replacement of refrigerant compressor

*BF83.55-P-1002-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of evaporator

*BF83.55-P-1003-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of evaporator of rear air conditioning system

*BF83.55-P-1004-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of condenser

*BF83.55-P-1005-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of drier

*BF83.55-P-1006-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of inner heat exchanger (IWT)

*BF83.55-P-1007-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of low-pressure line

*BF83.55-P-1008-02E

 Model 290 with engine 177, 256Additional filling quantity after replacement of high-pressure line

*BF83.55-P-1009-02E

9

Fill air conditioning.

 Model 257
except code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code 2U8 (Alternative refrigerant)
with code M256 (Inline 6-cylinder spark-ignition engine, M256)
Model 257
with code M256 (Inline 6-cylinder spark-ignition engine, M256)
except code 2U8 (Alternative refrigerant)Air conditioning/automatic air conditioning

*BF83.00-P-1001-01O

 Model 290Air conditioning/automatic air conditioning

*BF83.00-P-1001-01Q



Check

10

Conduct pressure test using air conditioning service unit.

If there is a pressure drop during the pressure test.



Check air conditioning system for leaks.

AR83.30-P-1761FR

11

Remove filler connections (2, 3).

12

Screw on plugs (1).

 Air conditioning/automatic air conditioning

Number

Designation

Model 257
with code 2U8 (Alternative refrigerant)
with code M256 (Inline 6-cylinder spark-ignition engine, M256)

Model 257
with code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)

BF83.00-P-1001-01O

Air conditioning/automatic air conditioning

Filling capacity for refrigerant

g

590

630

Sheet R134a

-

-

Sheet R1234yf

BB00.40-P-0361-01A

BB00.40-P-0361-01A

 Air conditioning/automatic air conditioning

Number

Designation

Model 257
except code 2U8 (Alternative refrigerant)
except code M256 (Inline 6-cylinder spark-ignition engine, M256)

Model 257
with code M256 (Inline 6-cylinder spark-ignition engine, M256)
except code 2U8 (Alternative refrigerant)

BF83.00-P-1001-01O

Air conditioning/automatic air conditioning

Filling capacity for refrigerant

g

630

590

Sheet R134a

BB00.40-P-0361-00A

BB00.40-P-0361-00A

Sheet R1234yf

-

-

 Air conditioning/automatic air conditioning

Number

Designation

Model 290

BF83.00-P-1001-01Q

Air conditioning/automatic air conditioning

Filling capacity for refrigerant

g

630

Sheet R134a

BB00.40-P-0361-00A

Sheet R1234yf

-

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1002-02D

Additional quantity of oil to be added when system suddenly looses fluid (e.g. line ruptured)

Compressor oil

cm3

40

40

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1002-02E

Additional filling quantity after replacement of refrigerant compressor

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1003-02D

Additional oil filling quantity after replacement of condenser

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1003-02E

Additional filling quantity after replacement of evaporator

Compressor oil

cm3

10

10

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1004-02D

Additional oil filling quantity after replacement of evaporator

Compressor oil

cm3

40

40

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1004-02E

Additional filling quantity after replacement of evaporator of rear air conditioning system

Compressor oil

cm3

10

10

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1005-02D

Additional oil filling quantity after replacement of suction line

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1005-02E

Additional filling quantity after replacement of condenser

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1006-02D

Additional oil filling quantity after replacement of pressure line

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1006-02E

Additional filling quantity after replacement of drier

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1007-02D

Additional oil filling quantity after replacement of refrigerant compressor

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1007-02E

Additional filling quantity after replacement of inner heat exchanger (IWT)

Compressor oil

cm3

10

10

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1008-02D

Additional oil filling quantity with detectable leakage

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1008-02E

Additional filling quantity after replacement of low-pressure line

Compressor oil

cm3

10

10

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 257 with engine 264, 654, 656

Model 257 with engine 256

BF83.55-P-1009-02D

Additional oil filling quantity after replacement of desiccant cartridge

Compressor oil

cm3

20

20

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A

 Refrigerant compressor

Number

Designation

Model 290 with engine 177

Model 290 with engine 256

BF83.55-P-1009-02E

Additional filling quantity after replacement of high-pressure line

Compressor oil

cm3

10

10

Sheet

BB00.40-P-0362-01A

BB00.40-P-0362-01A