Remove/Install Expansion Valve - AR83.30-P-5520GQ

MODEL 166, 292 

MODIFICATION NOTES

05.10.2016	Safety note added		AS83.00-Z-0006-01A
13.09.2016	Compressor oil specification changed		BB00.40-P-0362-01A
12.09.2016	General note added		AH83.30-P-0003-02A
12.09.2016	General note added		AH83.30-N-0003-01A
12.09.2016	General note added		AH83.30-P-0005-01A
12.09.2016	Safety note added		AS83.00-Z-0001-01A
12.09.2016	Safety note added		AS83.00-Z-0007-01A

Shown on model 166 

	Risk of fire  due to ignition of R1234yf refrigerant on hot components. Risk of poisoning  caused by inhaling overheated refrigerant vapors. Risk of injury  to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion  due to formation of ignitable refrigerant/air mixtures	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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. Model 166, 292 with code 2U8 (Alternative refrigerant)	AS83.00-Z-0007-01A
	Risk of poisoning  caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury  to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts	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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated. Model 166, 292 except code 2U8 (Alternative refrigerant)	AS83.00-Z-0006-01A
	Protect air conditioning circuit and components from moisture when carrying out repair work		AH83.30-P-0005-01A
	Notes on handling refrigerant R1234yf	Model 166, 292 with code 2U8 (Alternative refrigerant)	AH83.30-P-0003-02A
	Notes on handling refrigerant R134a	Model 166, 292 except code 2U8 (Alternative refrigerant)	AH83.30-N-0003-01A
	Remove
1	Drain air conditioning system		AR83.30-P-1760CW
2	Remove windshield wiper system		AR82.30-P-6400GZ
3	Remove connecting strut at left	If necessary.
4	Remove panel (2)
5	Unscrew nuts of low-pressure line (5) and high-pressure line (4) from expansion valve (1)
6	Pull low-pressure line (5) and high-pressure line (4) out from expansion valve (1) and seal with a stop plug	The openings of the refrigerant lines must be closed off. Otherwise, penetrating dirt and moisture will damage the air conditioning system. Record plug	Figure
7	Remove bolts (3)
8	Lift seal (6) (arrow) and remove expansion valve (1)
9	Seal openings on air conditioner housing using suitable stop plugs	The openings on the air conditioner housing must be sealed. Otherwise, penetrating dirt and moisture will damage the air conditioning system. Record plug	Figure
	Install
10	Remove stop plug from air conditioner housing	Record plug	Figure
11	Insert sealing rings of expansion valve (1) and moisten with compressor oil Compressor oils (specification 362.1)	Sealing rings must be replaced.	BB00.40-P-0362-01A
12	Lift seal (6) (arrow) and insert expansion valve (1)
13	Moisten screws/bolts (3) for expansion valve (1) with compressor oil and apply in alternating fashion Compressor oils (specification 362.1)	This serves to prevent the expansion valve (1) from tilting.	BB00.40-P-0362-01A
14	Tighten screws/bolts (3) for expansion valve (1)	Bolt, expansion valve to retaining plate	*BA83.30-P-1006-01J
15	Remove stop plugs from low-pressure line (5) and high-pressure line (4)	Record plug	Figure
16	Insert sealing rings on low-pressure line (5) and high-pressure line (4) and moisten with compressor oil Compressor oils (specification 362.1)	Sealing rings must be replaced.	BB00.40-P-0362-01A
17	Insert low-pressure line (5) and high-pressure line (4) in expansion valve (1)
18	Tighten nuts of low-pressure line (5) and high-pressure line (4) at expansion valve (1)	Nut, low- and high-pressure lines to expansion valve	*BA83.30-P-1004-01J
19	Install paneling (2)
20	Install left connecting strut	If removed.
21	Install windshield wiper system		AR82.30-P-6400GZ
	Check
22	Evacuate the air conditioning system, refill it, and then check the system to make sure that it functions correctly and does not leak		AR83.30-P-1760CW

AIR CONDITIONING

Number	Designation		Model 166	Model 292
BA83.30-P-1004-01J	Nut, low- and high-pressure lines to expansion valve	Nm	8	8

AIR CONDITIONING

Number	Designation		Model 166	Model 292
BA83.30-P-1006-01J	Bolt, expansion valve to retaining plate	Nm	5	5

Fig 1: Identifying Record Plug (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA