Check evaporator for leaks

AR83.30-P-5550A

Check evaporator for leaks

12.7.10

Checking

 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 discharged.

AS83.00-Z-0001-01A



Procedure for a damaged or leaky air conditioning system

All models with air conditioning.

AH83.30-N-0004-01A



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

All models with air conditioning.

AH83.30-N-0005-01A



Notes on handling R134a refrigerant

All models with R134a. refrigerant.

AH83.30-N-0003-01A

1

Remove expansion valve

Model 124, 129, 140, 201

Model 168

AR83.30-P-5520GC

Model 170

AR83.30-P-5520G

Model 202

AR83.30-P-5520E

Model 208, 210

AR83.30-P-5520F

Model 220, 215

AR83.30-P-5520M

Model 463, 461

AR83.30-P-5520GA

Model 414.700

AR83.30-L-5520VA

2

Install corresponding test adapter (1) in vehicle in place of expansion valve

 Test adapter depends on diameter of pipe at air conditioner housing.

 Test adapter

*140589516300

 Adapter

*463589016300

 Adapter hose

*140589516301

Air conditioner pressure and leak tester (mobile)

gotis://E_83_06.0

 Use new sealing rings (2, 6) to install test adapter (coat with compressor oil).

 Model 129, 140, 168, 170, 202, 208, 210, 215, 220, 414

*BA83.30-P-1002-01A

 Model 461, 463

*BA83.30-P-1016-01C

3

Connect testing unit to test adapter (1)

4

Check evaporator for leaks

 Fill system with a system pressure of
15 bar. Pressure must be maintained for at least 4 hours.

 Temperature changes during the pressure test can cause pressure fluctuations, e.g. due to weather changes, overnight, cooling down of engine compartment. Make sure the ambient conditions remain constant.

If faults are found: 

Remove/install evaporator

Model 124, 129, 140, 201

Model 168

AR83.30-P-5540GC

Model 170, 202, 208, 210

AR83.30-P-5540E

Model 215, 220

AR83.30-P-5540M

Model 463, 461

AR83.30-P-5540G

Model 414

AR83.30-L-5540VA

5

Disconnect testing unit from test adapter (1)

6

Remove test adapter (1) and adapter hose

 Test adapter depends on diameter of pipe at air conditioner housing.

 Test adapter

*140589516300

 Adapter

*463589016300

 Adapter hose

*140589516301

7

Install expansion valve

 Install expansion valve with new sealing rings (2, 6). Coat thread and sealing rings (2, 6) with compressor oil.

Model 124, 129, 140, 201

Model 168

AR83.30-P-5520GC

Model 170

AR83.30-P-5520G

Model 202

AR83.30-P-5520E

Model 208, 210

AR83.30-P-5520F

Model 220, 215

AR83.30-P-5520M

Model 463, 461

AR83.30-P-5520GA

Model 414.700

AR83.30-L-5520VA

Number

Designation

Model
129

Model
140

Model
168
up to 28.2.01

Model
168
as of 1.3.01

BA83.30-P-1002-01A

Bolt, expansion valve

Nm

8

8

8

8

Number

Designation

Model
170

Model
202

Model
208

Model
210

BA83.30-P-1002-01A

Bolt, expansion valve

Nm

8

8

8

8

Number

Designation

Model
215

Model
220

Model
414.700

BA83.30-P-1002-01A

Bolt, expansion valve

Nm

10

10

8

Number

Designation

Model
461

Model
463

BA83.30-P-1016-01C

Bolt, expansion valve

Nm

8

8