Remove/install refrigerant compressor

AR83.55-P-5300PR

Remove/install refrigerant compressor

06.06.2019

Engine

111 in model 203

with code 580 (Air-conditioning system)

Engine

111 in model 203

with code 581 (Automatic air conditioning)

Shown on model 203.0

4

Charge air duct

5

Air cleaner housing

6

Poly-V-belt

7

Stud bolt

8

Tensioner pulley

9

Drift

B2/5

Hot film mass air flow sensor

Shown on model 203.0

1

Bolts

3

Connector

11

Suction pressure line

2

Screw

10

High pressure pipe

A9

Refrigerant compressor

2a

Bolts

 

Remove/install

 Danger

Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.

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 areas. Carry out repair work on the air conditioning system circuit only after the system has been drained.

AS83.00-Z-0001-01A

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 R134a

AH83.30-N-0003-01A

1

Remove receiver drier

AR83.30-P-6521P

 Installation: The receiver drier must be replaced every time the refrigerant circuit is opened, in order to guarantee correct operation of the air conditioning system.

2

Remove air filter housing (5)

Engine 111.951

AR09.10-P-1150PR

Engine 111.955

AR09.10-P-1150PK

3

Remove charge air duct (4)

Engine 111.955

AR09.50-P-8680PK

4.1

Remove poly-V-belt (6)

Engine 111.951

AR13.22-P-1202PR

4.2

Detach poly-V-belt from basic drive (6) and fasten to engine

Engine 111.955

 Swivel stud bolt (7) on tensioner pulley (8) in counterclockwise direction (arrow).

 Installation: Lock tensioner pulley (8) using pin or drift (9). Check poly-V-belt (6) and replace if necessary:



Remove poly-V-belt (6)

AR13.22-P-1202PK

5

Disconnect connector coupling (3)

6

Remove bolt (1)

 Screw/bolt, suction line to refrigerant compressor

*BA83.30-P-1003-01D

 Screw/bolt, pressure line to A/C compressor

*BA83.30-P-1004-01D

7

Remove suction pressure line (11) and high-pressure line (10) and place to one side

 Seal openings in order to prevent foreign objects entering.

 Installation: Install new sealing rings. Moisten thread and sealing rings with compressor oil.

 Record plug

*129589009100

8

Remove screw/bolt (2)

 Engine 111.951 in model 203
with code 580 (Air-conditioning system)
with code 581 (Automatic air conditioning)
Engine 111.955 in model 203
with code 580 (Air-conditioning system)
with code 581 (Automatic air conditioning)Bolt, refrigerant compressor to bracket

*BA83.55-P-1001-01F

9

Remove lower engine compartment paneling

AR61.20-P-1105P

 Front engine compartment lining.

10

Remove bolt (2a)

 Engine 111.951 in model 203
with code 580 (Air-conditioning system)
with code 581 (Automatic air conditioning)
Engine 111.955 in model 203
with code 580 (Air-conditioning system)
with code 581 (Automatic air conditioning)Bolt, refrigerant compressor to bracket

*BA83.55-P-1001-01F

11

Remove refrigerant compressor (A9)

 Remove refrigerant compressor (A9) upwards, between engine and electric fan.

 Installation: To prevent injuries, when replacing the refrigerant compressor, slowly release the pressure in the new refrigerant compressor.

12

Install in the reverse order

13

Correct oil level in refrigerant compressor (A9)

AR83.55-P-5250P

Replace

14

Replace suction pressure line (11) and high-pressure line (10) with sealing rings

 Only if the refrigerant compressor (A9) is replaced as a result of internal damage.

15

Replace expansion valve

MODEL 203

AR83.30-P-5520P

 Only if the refrigerant compressor (A9) is replaced as a result of internal damage.

 Air conditioning

Number

Designation

Model 203, 209

BA83.30-P-1003-01D

Screw/bolt, suction line to refrigerant compressor

Nm

20

 Air conditioning

Number

Designation

Model 203, 209

BA83.30-P-1004-01D

Screw/bolt, pressure line to A/C compressor

Nm

20

 Refrigerant compressor

Number

Designation

Engine 111.951

ENGINE 111.955

BA83.55-P-1001-01F

Bolt, refrigerant compressor to bracket

Nm

20

20