887019 Removing and Installing Expansion Valve For Auxiliary Air Conditioner

WM 887019 Removing and installing expansion valve for auxiliary air conditioner

Technical values





Preliminary work

1. Remove rear side trim panel. -> 700319 Removing and installing side trim panel for rear luggage compartment - section on "Removing" Service and Repair
2. Drain refrigerant. -> 870317 Draining and filling refrigerant - section on "Draining" Service and Repair

Removing expansion valve

WARNING

Refrigerant

- Danger of freezing

-> Avoid contact with refrigerant.
-> Wear personal protective gear.
-> Observe the safety regulations for working on air-conditioned vehicles and dealing with refrigerant.
-> Observe the safety regulations for extraction and filling systems.
-> Observe the instructions for repairing air conditioning systems and storing spare parts.





Overview of expansion valve

1. Unscrew the two fastening screws -1- for the refrigerant lines on the expansion valve.





Unscrewing fastening screws for refrigerant lines

2. Pull out refrigerant lines from expansion valve and close with plugs.
3. Unscrew the two fastening screws for the expansion valve -2- and remove expansion valve.





Loosening and removing expansion valve

Installing expansion valve

Information

- Before the expansion valve is re-installed, the O-rings of the refrigerant lines must be checked for damage and replaced if necessary.

- Wet the O-rings of the refrigerant lines with refrigerant oil.

1. Carefully push expansion valve onto refrigerant lines from evaporator - do not tilt.





Installing and screwing down expansion valve

2. Screw in and tighten the two fastening screws -2-. => Tightening torque: 9 Nm (6.5 ftlb.)
3. Carefully push refrigerant lines onto expansion valve (do not tilt) and tighten with the two fastening screws -1-. => Tightening torque: 10 Nm (7.5 ftlb.)





Tightening fastening screws of refrigerant lines

Subsequent work

1. Install rear side trim panel. -> 700319 Removing and installing side trim panel for rear luggage compartment - section on "Installing" Service and Repair
2. Fill in refrigerant. -> 870317 Draining and filling in refrigerant - section on "Filling" Service and Repair