Draining, evacuating and refilling air conditioning, checking function and checking for leaks

AR83.30-D-1760B

Draining, evacuating and refilling air conditioning, checking function and checking for leaks

8.12.05

Draining

 Danger!

Risk of explosion from welding or soldering work on closed air conditioning system. Risk of poisoning from 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



Conduct if air conditioning system is damaged or leaking

AH83.30-N-0004-01A



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 air filter



AP83.00-D-8330A

2

Unscrew protective caps on testing and filling valve for the high pressure side (1) as well as the low pressure side testing and filling valve (2)

3

Connect extraction and filling unit

 See manufacturer's owner's manual.



*WE58.40-Z-1002-22A



*WE58.40-Z-1003-22A



*WE58.40-Z-1004-22A

4

Discharge air conditioning system

 See manufacturer's owner's manual.

5

Drain separated compressor oil from the extraction and filling unit and measure the exact quantity

 See manufacturer's owner's manual.

Evacuating

6

Clean air conditioning system and evacuate

 See manufacturer's owner's manual.

Charging

7

Refill compressor oil

 Before filling in refrigerant, replace drained amount of compressor oil with new compressor oil. The specified total filling capacity must not be exceeded.

 See manufacturer's owner's manual.



*BF83.30-N-1001-01A



*BF83.30-N-1011-01A

8

Fill air conditioning system

 See manufacturer's owner's manual.



*BF83.30-N-1009-01A



Checking

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the running engine

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

AS00.00-Z-0005-01A

9

Check function of air conditioning

Let engine run at idle speed for roughly 5 min and check all air conditioning functions.

10

Inspect air conditioning system for leaks with leak detector



 In view of the fact that the refrigerant is heavier than air, the check with the probe of the leak tester must always be carried out below the suspected leakage point.

*WE58.40-Z-1002-20A

11

Install air filter



AP83.00-D-8330A

Number

Designation

Model
903.6, 904.6 with code H08

BF83.30-N-1001-01A

Total filling quantity of compressor oil for new system (in refrigerant compressor)

cm3

220

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A

BF83.30-N-1009-01A

Total filling capacity, refrigerant

kg

2,80

Specifications for Operating Fluids

Sheet

BB00.40-P-0361-00A

BF83.30-N-1011-01A

Total filling capacity for compressor oil of air conditioning system
(including refrigerant compressor)

cm3

300

Specifications for Operating Fluids

Sheet

BB00.40-P-0362-00A

WE58.40-Z-1002-20A

Air conditioning leak detector

WE58.40-Z-1002-22A

Air conditioning service station

WE58.40-Z-1003-22A

Red filling hose

WE58.40-Z-1004-22A

Blue filling hose