Flush air conditioning

AR83.30-P-1785MFA

Flush air conditioning

05.08.2020

Model

118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75)

Schematic diagram of refrigerant circuit

4

Expansion valve

8

Desiccant cartridge

7

Refrigerant compressor

Flushing procedure

8

Desiccant cartridge

11

Outlet line adapter

9

Flushing adapter

12

Inlet line adapter

 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.Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75)
except code 2U8 (Alternative refrigerant)

AS83.00-Z-0006-01A

 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.Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75)
with code 2U8 (Alternative refrigerant)

AS83.00-Z-0007-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

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

AH83.30-N-0005-01A

Notes on handling refrigerant R134a

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75)
except code 2U8 (Alternative refrigerant)

AH83.30-N-0003-01A

Notes on handling refrigerant R1234yf

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75)
with code 2U8 (Alternative refrigerant)

AH83.30-P-0003-02A



Remove

1

Remove receiver drier (8).

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.30-P-6521MFG

Model 118, 177, 247 with engine 608, 654
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
with code 2U8 (Alternative refrigerant)
Model 118, 177, 247 with engine 282
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFA

2

Remove refrigerant compressor (7).

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.55-P-5310MFG

Model 118, 177, 247 with engine 654

AR83.55-P-5310MFF

Model 118, 177, 247 with engine 608

AR83.55-P-5310MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
Model 118, 177, 247 with engine 282
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AR83.55-P-5310MFD

Model 118, 177, 247 with engine 282
with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AR83.55-P-5311MFH

3

Remove expansion valve (4).

AR83.30-P-5520MFA



Install

4

Install flushing adapter (9) in place of removed front expansion valve (4).

 Bolt, expansion valve to retaining plate

*BA83.30-P-1009-01T

 Adapter

*213589016300

5

Position and tighten refrigerant lines on flushing adapter (9).

 Nut, refrigerant line to expansion valve

*BA83.30-P-1001-01T

6

Attach outlet line adapter (11) and inlet line adapter (12) to refrigerant lines of removed refrigerant compressor (7) according to line diameters.

 Model 118, 177, 247 with engine 654Bolt, refrigerant line to refrigerant compressor

*BA83.55-P-1002-02B

 Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260Bolt, refrigerant line to refrigerant compressor

*BA83.55-P-1002-02F

 Model 118, 177, 247 with engine 282Bolt, refrigerant line to refrigerant compressor

*BA83.55-P-1002-02G

 Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139Screw/bolt, refrigerant lines to A/C compressor

BA83.55-P-1002-01BA

 Model 118, 177, 247 with engine 608Bolt, refrigerant line to refrigerant compressor

*BA83.55-P-1002-02H

 Adapter kit

*222589019100

7

Reinstall all component parts of receiver drier (8) except filter pack.

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
with code 2U8 (Alternative refrigerant)
Model 118, 177, 247 with engine 282
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFA

Model 118, 177, 247 with engine 608, 654
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.30-P-6521MFG

8

Connect air conditioning service unit with flushing tank and service hoses to outlet line adapter (11) and to inlet line adapter (12).



000 588 10 82 00 R1234yf air conditioning service unit

WS83.00-P-0034B



000 588 04 82 00 Air conditioning service unit R134a

WS83.00-P-0031B

 In principle, any air conditioning service unit can be used, regardless of the brand or design; it only has to have a flushing function.

 The flushing direction (arrows) is the opposite direction to the flow direction of the refrigerant circuit.

 Connect inlet service hose to inlet line adapter (12) and outlet service hose to outlet line adapter (11).

Flushing

9

Start flushing procedure at air conditioning service unit and follow instructions.



Remove

10

Disconnect air conditioning service unit.

11

Detach refrigerant lines from flushing adapter (9).

12

Remove flushing adapter (9) and seal openings of refrigerant lines with suitable stop plugs.

 Adapter

*213589016300

 Record plug

*129589009100



Install

13

Install new expansion valve (4).

AR83.30-P-5520MFA



Remove

14

Detach outlet line adapter (11) and inlet line adapter (12) from refrigerant lines of removed refrigerant compressor (7) and seal openings of refrigerant lines with suitable stop plugs.

 Adapter kit

*222589019100

 Record plug

*129589009100

15

Remove all installed component parts of receiver drier (8) again.

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.30-P-6521MFG

Model 118, 177, 247 with engine 608, 654
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
with code 2U8 (Alternative refrigerant)
Model 118, 177, 247 with engine 282
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFA



Install

16

Install new refrigerant compressor (7).

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.55-P-5310MFG

Model 118, 177, 247 with engine 654

AR83.55-P-5310MFF

Model 118, 177, 247 with engine 608

AR83.55-P-5310MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
Model 118, 177, 247 with engine 282
except code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AR83.55-P-5310MFD

Model 118, 177, 247 with engine 282
with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AR83.55-P-5311MFH

17

Install receiver drier (8) with new filter pack.

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 139

AR83.30-P-6521MFG

Model 118, 177, 247 with engine 608, 654
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFE

Model 118 (except 118.35/65), 177 (except 177.05/151/951), 247 (except 247.651/75) with engine 260
with code 2U8 (Alternative refrigerant)
Model 118, 177, 247 with engine 282
with code 2U8 (Alternative refrigerant)

AR83.30-P-6521MFA



Check

18

Fill air conditioning system and inspect for leak tightness and proper operation.

AR83.30-P-1760MFA

 Air conditioning

Number

Designation

Model 118

Model 177

BA83.30-P-1001-01T

Nut, refrigerant line to expansion valve

M6

Nm

12

12

 Air conditioning

Number

Designation

Model 247

BA83.30-P-1001-01T

Nut, refrigerant line to expansion valve

M6

Nm

12

 Air conditioning

Number

Designation

Model 118

Model 177

BA83.30-P-1009-01T

Bolt, expansion valve to retaining plate

Nm

7

7

 Air conditioning

Number

Designation

Model 247

BA83.30-P-1009-01T

Bolt, expansion valve to retaining plate

Nm

7

 Refrigerant compressor

Number

Designation

Engine 654.8

Engine 654.9

BA83.55-P-1002-02B

Bolt, refrigerant line to refrigerant compressor

M8

Nm

20

20

M6

Nm

-

12

 Refrigerant compressor

Number

Designation

Engine 260

BA83.55-P-1002-02F

Bolt, refrigerant line to refrigerant compressor

Nm

20

 Refrigerant compressor

Number

Designation

Engine 282

BA83.55-P-1002-02G

Bolt, refrigerant line to refrigerant compressor

Nm

20

 Refrigerant compressor

Number

Designation

Engine 608

BA83.55-P-1002-02H

Bolt, refrigerant line to refrigerant compressor

Nm

20