Condenser HVAC: Service and Repair

Condenser, replacing

Removal

Important information

Note! For vehicles with chassis no. up to -86697, see TXV-valve and connector pipe TXV-Valve and Connector Pipe.

Before starting work on the condenser

Warning! Follow the safety instructions for work on air conditioning systems. See: Refrigerant, safety regulations Technician Safety Information.

Note! First read the instructions covering slow and fast leaks. See Oil in the A/C system Service and Repair.

Note! Always plug the pipes and connections when working on the climate control system.

Condenser - Work in the engine compartment
- Disconnect the battery negative lead. See Battery, replacing Battery, Replacing
- Drain the refrigerant from the system. See Refrigerant, draining Refrigerant, Draining




- Remove the air pipe from the control module box.




- Remove the upper screws holding the air conditioning aggregate together. Pull the aggregate outwards slightly.




- Remove the screws from the upper mountings on the air conditioning aggregate.

Condenser - Work under the car





Remove:
- the air baffle.





Remove
- the pipe coupling from the receiver / dryer.





The lower mounting for the air conditioning aggregate:
- Partially slacken off the screws on the right-hand side
- Remove the screws on the left-hand side.




Slightly lower the air conditioning aggregate on the left-hand side. This is to access the screw.

Remove
- the screw from the hose / pipe coupling between the compressor and the condenser.
Use a curved ring spanner
- the hose from the catch on the condenser. Carefully push the hose to one side.




- Slacken off the lower screws holding the air conditioning aggregate together. Pull the aggregate outwards slightly
- Press the air conditioning aggregate backwards. Lower the condenser slightly. Remove the pressure sensor on the receiver
- Remove the condenser
- Remove the receiver / dryer. See Accumulator / receiver drier, replacing Service and Repair.

Installation

Condenser - Work under the car
- Screw the protective sleeve loosely into place on the service valve
- Install the receiver / dryer. See Accumulator / receiver drier, replacing Service and Repair.
- Fill the condenser with oil.
Note! Always use new O-rings lubricated with compressor oil.

- Press the air conditioning aggregate backwards. Push the condenser up slightly. Install the switch from the pressure sensor on the receiver.




- Thread in the lower screws for the air conditioning aggregate
- Check that the condenser is in the correct position against the air conditioning aggregate. Tighten the screws for the air conditioning aggregate.




- Position the hose / pipe from the compressor in the mounting hook. Position the hose / pipe in the hose connector on the condenser
- Thread and tighten the screw by hand so that the hose connector touches the bottom
- Tighten the screw for the hose connector from the compressor. Tighten to 25 Nm ±6 Nm.




- Position the air conditioning aggregate against the rubber seals. Tighten the screws for the air conditioning aggregate against the member
- Check that the seals are correctly positioned.




- Install the hose connector for the receiver. Tighten. Tighten to 10 Nm.




- Install the air baffle.




- Thread the upper screws for the air conditioning aggregate on the condenser. Tighten the screws.




- Thread the screws on the upper mountings on the air conditioning aggregate. Tighten the screws.
- Vacuum pump the system and test for leaks. See Refrigerant, draining Refrigerant, Draining
- Fill the system with refrigerant and check for leaks. See Refrigerant, draining Refrigerant, Draining
- Connect the battery negative lead. See Battery, replacing Battery, Replacing.