Hose/Line HVAC: Service and Repair

Refrigerant pipe accumulator to compressor

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Draining the air conditioning (A/C) system

Warning! Follow the safety instructions for work on air conditioning systems.

Read the instructions for slow and fast leaks according to: AC-system, oil, refilling AC-System, Oil, Refilling.

Caution! Always use new O-rings lubricated with compressor oil.

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

Drain the refrigerant from the AC-system according to: Refrigerant, draining Refrigerant, Draining.

Removing the shield




Raise the vehicle.
Remove the shield under the vehicle. It is secured with 7 clips.

Pipe/hose between compressor and condenser (pressure side), replacing

Removing the pipe/hose between the compressor and the condenser





Remove:
- the rear/upper pipe/hose connector (1) on the compressor.
- the front bumper cover. See: Cover bumper front, B5254T7 Service and Repair
- the lower connector for the charge air hose to the charge air cooler (CAC) on the right-hand side.




Lower the vehicle.
Remove the upper charge air cooler (CAC) hose.
Remove the dip stick.
Disconnect the rear connector (1) to the condenser, to the left of the right-hand headlamp. See the illustration.
Route the pipe/hose down to the compressor under the vehicle.

Installing the pipe/hose between the compressor and the condenser

Note! For tightening torques, see: Tightening torque, B5254T7 [1][2]Body and Frame.

Place the pipe/hose for the compressor in position by the upper connector to the condenser.

Install:
- the pipe coupling, 1 M8. Ensure that the O-rings are securely located between the condenser and the pipe/hose. Tighten the screw
- the pipe coupling by the compressor, 1 M8. Make sure the O-rings are securely located. Tighten the screw
- the charge air pipe upper and lower connectors.
Carry out finishing work. See: Finishing.

Pipe/hose between compressor and receiver (suction side), replacing

Removing the pipe/hose between the compressor and the receiver




Remove the lower/front pipe/hose connector (2) on the compressor.




Lower the vehicle.
Remove the upper connector of the charge air hose to the charge air cooler (CAC).
Disconnect the pipe/hose connector to the receiver adjacent to the power steering fluid reservoir. See the illustration.
Route the pipe/hose down to the compressor under the vehicle.

Installing the pipe/hose between the compressor and the receiver

Note! For tightening torques, see: Tightening torque, B5254T7 [1][2]Body and Frame.

Place the pipe/hose for the compressor in position by the upper connector to the receiver.

Install:
- the pipe coupling, 1 M8. Ensure that the O-rings are securely located between the receiver and the pipe/hose. Tighten the screw
- the upper connector for the charge air pipe
- the pipe coupling by the compressor, 1 M8. Make sure the O-rings are securely located. Tighten the screw.
Carry out finishing work. See: Finishing.

Finishing

Function testing together with leak tracing
Vacuum pump the air conditioning (A/C) system. See: Vacuum pumping Vacuum Pumping.
Fill the AC-system with refrigerant according to: Refrigerant, filling Refrigerant, Filling.
Leak trace the air conditioning (A/C) system. See: Leak detection, tracer agent Leak Detection, Tracer Agent or.

Installing shield and bumper cover




Install the shield under the vehicle with 7 clips. See the illustration.
Carry out a performance test on the climate control unit. See: Climate control system, check Climate Control System, Check.
Install the front bumper cover. See: Cover bumper front, B5254T7 Service and Repair.