Refrigerant compressor, remove/install

AR83.55-P-5310MFE

Refrigerant compressor, remove/install

28.10.2019

Engine

608 in model 118, 177, 247

Modification notes

28.10.2019

Document completely revised.

1

Coolant connection

4

Screw

2

Electrical connector

A9

Refrigerant compressor

3

Bolts

A9/7

Refrigerant compressor with magnetic clutch

1

Coolant connection

5

Cable duct

11

Screw

6

Bracket

12

Coolant lines

7

Screw

13

Bracket

8

Electrical connector

14

Screw

9

Coolant connections

A9

Refrigerant compressor

10

Clip

A9/7

Refrigerant compressor with magnetic clutch

 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

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

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 avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

 

Remove/install

1

Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).

2

Discharge air conditioning system.

AR83.30-P-1760MFA

3

Remove engine air intake duct upstream of air filter housing.

4

Remove coolant pump switchover valve (Y133).

AR20.10-P-3000MFE

 Installation: Only install lower engine compartment paneling after leak test.

5

Release and disconnect coolant connections (1), seal with protective covers and set aside.

AR20.20-P-7441-01RQ

 Collect escaping coolant in suitable container.

 Set of protective caps

*001589009100

6

Remove screws (3) of refrigerant lines.

 Bolt, refrigerant line to refrigerant compressor

*BA83.55-P-1002-02H

7

Pull refrigerant lines out of refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7), and seal openings using suitable stop plugs.

 Installation: Replace seals of refrigerant lines.

 Record plug

*129589009100

8

Remove poly-V-belt.

AR13.22-P-1202MFE

9

Unscrew bolt (4).

 Bolt, A/C compressor to major assembly carrier

*BA83.55-P-1001-02H

10

Unclip cable duct (5) from holder (6).

 Installation: Ensure that the cable duct (5) is seated correctly on the holder (6).

 Clip remover

*452589016300

11

Release and disconnect electrical connectors (2, 8).

12

Release and disconnect coolant connections (9) and seal with protective covers.

AR20.20-P-7441-01RQ

 Collect escaping coolant in suitable container.

 Set of protective caps

*001589009100

13

Release clamp (10), detach coolant hose from flange and seal connections with protective covers.

 Hose clamp pliers

*454589003700

 Set of protective caps

*001589009100

14

Unscrew screw (14).

15

Remove coolant lines (12) with attached coolant hoses.

 Collect escaping coolant in suitable container.

 Hose clamp pliers

*454589003700

16

Secure refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7) to prevent it from falling down.

17

Make markings on holders (6, 13) and on refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7).

18

Unscrew screws (7, 11) and remove refrigerant compressor (A9) or refrigerant compressor with magnetic clutch (A9/7) with holders (6, 13) downwards.

 Installation: Ensure correct seating and correct installation of holders (6, 13).

 Bolt, A/C compressor to major assembly carrier

*BA83.55-P-1001-02H

19

Install in the reverse order.

20

Commission the refrigerant compressor (A9) or the refrigerant compressor with magnetic clutch (A9/7).

When replacing the refrigerant compressor (A9) or refrigerant compressor (A9/7).



AD00.00-P-2000-06MFA

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

21

Perform engine test run, check air conditioning system for proper operation and leak tightness while doing so.

22

Install lower engine compartment lining.

AR61.20-P-1105MFE

 Refrigerant compressor

Number

Designation

Engine 608

BA83.55-P-1001-02H

Bolt, A/C compressor to major assembly carrier

Nm

20

 Refrigerant compressor

Number

Designation

Engine 608

BA83.55-P-1002-02H

Bolt, refrigerant line to refrigerant compressor

Nm

20