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Home >> Mercedes Benz >> 2011 >> G55 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Testing & Repair -- G-Class (463) >> Testing & Repair >> Remove/install expansion valve - AR83.30-P-5520GM

Remove/install expansion valve - AR83.30-P-5520GM

MODEL 463.202 /222 /236 /237 /243 /244 /245 /246 /247 /248 /249 /250 /254 /270 /271 /303 /306 /309 /322 /323 /332 /333 /336 /340 /341 /346 

Fig 1: Identifying Expansion Valve Components
G07740686Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
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 discharged. AS83.00-Z-0001-01A
NOTES Notes on coolant   AH20.00-N-2080-01A
NOTES Procedure for a damaged or leaky air conditioning system   AH83.30-N-0004-01A
NOTES Protect air conditioning circuit and components from moisture when carrying out repair work   AH83.30-N-0005-01A
IMPORTANT Notes on handling R134a refrigerant Air conditioning with refrigerant R134a AH83.30-N-0003-01A
1 Remove air conditioner housing   AR83.30-P-5200GM 
NOTES Notes on removing and installing the air conditioner housing   AH83.30-P-0006-01GM
2 Remove gasket (11) IMPORTANT Check gasket (11) for damage and replace if necessary.  
3 Remove bolts (9) IMPORTANTInstallation:  To avoid canting, tighten screws (9) alternately.  
TORQUE SPECIFICATION *BA83.30-P-1016-01C 
4 Remove expansion valve (10) IMPORTANTInstallation:  Replace sealing rings. Coat thread and sealing rings with compressor oil.  
TORQUE SPECIFICATION Figure
5 Install in the reverse order    
6 Check air conditioning system for proper function    
7 Check air conditioning circuit for leakage. UV leak detector kit for air conditioning systems
gotis://E_83_04.0 
 
AIR CONDITIONING

Number Designation Model 463
BA83.30-P-1016-01C Bolt, expansion valve Nm 8
Fig 2: Identifying Set Of Stop Plugs (129 589 00 91 00)
G07740687Courtesy of MERCEDES-BENZ USA