Remove/install service valve - AR83.30-P-6522V

MODEL 171.4 with CODE (580) Automatic air conditioning with CODE (581) Convenience automatic air conditioning 

Fig 1: Identifying Service Valve And Plug

Courtesy of MERCEDES-BENZ USA

	Removal/installation
	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.	-
	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		-
	Notes on handling refrigerant R134a		AH83.30-N-0003-01A
1	Discharge air conditioning system	Installation:  Evacuate, refill air conditioning system and check for proper operation and tightness.	AR83.30-P-1760V
2	Disconnect air conditioning evacuation, recycling and charging unit for refrigerant R134a at the service valve (1)		*WE58.40-Z-1002-22A
3	Unscrew service valve (1) at the stop plug (2)	Installation:  Moisten thread and sealing ring at the service valve (1) with compressor oil.
			*BA83.30-P-1007-01D
4	Install in the reverse order