Check evaporator for leakage - AR83.30-P-5550A

MODEL 124, 129, 140, 168, 170, 201, 202, 208, 210 with CODE (580) Air conditioning (or Tempmatic for USA) 

MODEL 124, 129, 140, 201, 202, 208, 210, 215, 220 with CODE (581) Automatic air conditioning 

MODEL 461.217 /219 /223 /227 /229 /238 /239 /249 /266 /267 /302 /321 /322 /323 /326 /327 /328 /329 /332 /335 /336 /337 /338 /341 /342 /345 /365 /366 /367 /368 /401 /402 /403 /404 /405 /450 /451 /452 /454 /455 /456 /458 /459 with CODE (H02) Air conditioning 

MODEL 463.200 /204 /206 /207 /208 /209 /220 /221 /224 /225 /227 /228 /230 /231 /232 /233 /240 /241 /300 /304 /307 /308 /320 /321 /324 /325 /327 /328 /330 /331 with CODE (H02) Air conditioning 

MODEL 414.700 with CODE (H06) Air conditioning 

Shown using model 168 as an example 

Fig 1: Identifying Test Adapter, Evaporator Intake/Pressure Connection And Sealing Ring - Shown Using Model 168

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown using model 463 as an example 

Fig 2: Identifying Test Adapter, Evaporator Intake/Pressure Connection And Sealing Ring - Shown Using Model 463

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Checking
	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
	Conduct if air conditioning system is damaged or leaking	All models fitted with air conditioning.	AH83.30-N-0004-01A
	Protect air conditioning circuit and components from moisture when carrying out repair work	All models fitted with air conditioning.	AH83.30-N-0005-01A
	Notes on handling refrigerant R134a	All models with R134a. refrigerant.	AH83.30-N-0003-01A
1	Remove expansion valve	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 dependent on pipe diameter at air conditioner housing
		Test adapter	Fig 3
		Adapter	Fig 4
		Adapter hose	Fig 5
		Use new O-rings (2, 6) (coat with compressor oil) to install the test adapter.
		Model 129, 140, 168, 170, 202, 208, 210, 215, 220, 414	*BA83.30-P-1002-01A
		Model 461, 463	*BA83.30-P-1001-01C
3	Connect testing unit to test adapter (1).
4	Check evaporator for leakage	First fill system with 20.5 bar of system pressure, reduce system pressure to 20 bar after approx. 10 min. 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. Consistent ambient conditions must be strictly ensured. If in poor condition: ↓ Remove/install evaporator
		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	Install in the reverse order

AIR CONDITIONING SYSTEM

AIR CONDITIONING SYSTEM

AIR CONDITIONING SYSTEM

AIR CONDITIONING SYSTEM

Fig 3: Identifying Test Adapter (140 589 51 63 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 4: Identifying Adapter (463 589 01 63 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Identifying Adapter Hose (140 589 51 63 01)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.