Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

AR83.30-G-1760M

Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

10.08.2018

Engine

933.9, 935.9 in model 800.210/220

with air conditioning system

Modification notes

14.02.2018

Document revised completely.

 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

 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

Topical note

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

AH83.30-N-0005-01A

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

Draining

1

Remove cap from intake side test and filling valve, and from pressure side test and filling valve.

 See information from body manufacturer.

2

Connect air conditioning service unit.

 See information from body manufacturer.

3

Discharge air conditioning system.

4

Replace drier cartridge.

Only if refrigerant circuit is opened.

AR83.30-G-6521M

5

Determine amount of compressor oil extracted.


Before filling the air conditioning system, add the calculated oil filling quantity to the refrigerant circuit.
Otherwise damage to the A/C compressor will occur.

Evacuate

6

Evacuate air conditioning system.

Filling

7

Add compressor oil.



Compressor oils (specification 362.0)

BB00.40-P-0362-00A

 See information from body manufacturer.

8

Fill air conditioning.

 See information from body manufacturer.



Check

9

Start engine and switch on air conditioning system.

 See information from body manufacturer.

10

Check air conditioning system for proper operation.

 Run engine at idle speed for approx. 4 min and check all air conditioning system functions while doing so.
See information from body manufacturer.

11

Switch off engine.

12

Check air conditioning system for leakage.

 Visual inspection.

13

Remove air conditioning service unit.

14

Attach cap at intake side test and filling valve and at pressure side test and filling valve.