Front Expansion Valve, Removing And Installing: Installing
Install in reverse order of removal and Note The Following:
-- Check the support ring -D- for proper installation position and check the grommet in the plenum chamber rear panel for damage and proper installation.
-- Clean the connecting tubes -B and C- from the evaporator and check for damage.
-- Check the baseplate -D- on the connecting tubes -B and C- is seated correctly on the connecting tubes to the evaporator.
-- Replace the O-ring seals -E and F-. Refer to the Parts Information for the correct version.
Follow the instructions for installing the O-rings. Refer to REFRIGERANT CIRCUIT SEALS .
The retaining plate -A- must be installed in the mounts from the connecting tubes -B and C-.
The O-ring seals -D and E- are inserted in the groove from the connecting tubes -B and C- -arrows-.
-- Coat the O-ring seals lightly with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
-- Clean the connections on the expansion valve -A- (to the connecting tubes -C and E-) to the evaporator and check for damage.
The expansion valve -A- is available in different versions (same housing but a different control characteristic). Refer to the Parts Information for the exact allocation.
-- Replace the O-ring seals -B and F-. Refer to the Parts Information for the correct version.
-- Make sure the retaining plate -D- is seated correctly on the connection pipes -C and E- leading to the evaporator.
-- Tighten the bolts -G-.
-- Connect the refrigerant line to the expansion valve. Refer to REFRIGERANT LINES, DISCONNECTING FROM FRONT EXPANSION VALVE AND RECONNECTING .
-- Evacuate and fill the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, EVACUATING WITH A/C SERVICE STATION [R134a] /REFRIGERANT CIRCUIT, CHARGING WITH A/C SERVICE STATION [R134a] or REFRIGERANT CIRCUIT, EVACUATING [R1234yf] / REFRIGERANT CIRCUIT, CHARGING [R1234yf] .
-- Install the remaining removed components.
-- Retrieve the Front A/C Display Control Head -E87- DTC memory and if necessary delete the displayed error using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
-- Operate the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT .
Read the information for starting the A/C system after filling. Refer to A/C SYSTEM, STARTING AFTER CHARGING REFRIGERANT CIRCUIT / A/C SYSTEM, GENERAL INFORMATION or A/C SYSTEM, OPERATING AFTER CHARGING [R1234yf] .