874319 Removing and installing air-conditioning compressor/condenser line

WM 874319 Removing and installing air-conditioning compressor/condenser line

Technical values





Preliminary work

Preliminary work for removing and installing air-conditioning compressor/condenser line

1. Drain the air conditioning system. -> 870317 Adding refrigerant and removing by suction Service and Repair
2. Remove engine guard. -> 108019 Removing and installing engine guard - section on "Removing" 108019 Removing and installing engine guard
3. Loosen front wheel housing liner at the left. -> 505619 Removing and installing front wheel housing liner - section on "Removing" Service and Repair

Removing air-conditioning compressor/condenser line

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.

1. Remove the refrigerant lines at the compressor.





Refrigerant lines on air-conditioning compressor

1.1. Loosen the fastening screws -1- for the refrigerant lines -3-.
1.2. Pull out the line -3- at the air-conditioning compressor and close off the connections with suitable stoppers.
2. Remove the line -1- from the air-conditioning compressor to the condenser -2-.





Line from air-conditioning compressor to condenser

2.1. To do this, unscrew the fastening screw -3- for the line -1- at the condenser -2-.

Installing air-conditioning compressor/condenser line

NOTICE

Too much refrigerant oil in new air conditioning compressor.

- Risk of damage to air conditioning components.

-> Do not start engine.
-> Do not tow the vehicle.

1. Replace the sealing rings -1, 2- on the coolant line -3- from the air-conditioning compressor to the condenser.





Sealing rings on lines

2. Fit the coolant line -1- from the air-conditioning compressor to the condenser -2-.
Make sure that the guide pin at the connection point fits into the mounting for the refrigerant line.





Line from air-conditioning compressor to condenser

2.1. Position the refrigerant line -1- on the condenser -2- and fit the fastening screw -3-.=> Tightening torque: 12 Nm (9 ftlb.)
3. Position the refrigerant line on the air-conditioning compressor.
Make sure that the guide pin on the air-conditioning compressor fits into the mounting for the refrigerant line.
4. Fit the fastening screws -1- for the refrigerant lines -3-. => Tightening torque: 20 Nm (15 ftlb.).





Refrigerant lines on air-conditioning compressor

Subsequent work

Subsequent work for removing and installing air-conditioning compressor/condenser line

1. Fill the air conditioning system with refrigerant. -> 870317 Adding refrigerant and removing by suction Service and Repair
2. Fit engine guard. -> 108019 Removing and installing engine guard - section on "Installing" 108019 Removing and installing engine guard
3. Open air outlet vents on the dashboard and set fan to at least 75 %.
4. After allowing the system to stabilise at idle speed (approx. 5 sec.), switch on air conditioning and allow the engine to run uninterrupted for at least 2 minutes at an engine speed of less than => Engine speed: 1,500 1/min.
5. Switch off the air conditioning again. Do not drive until the air conditioning system has been filled.