873419 Removing and installing air-conditioning compressor

WM 873419 Removing and installing air conditioning compressor

Tools





Technical Values






Checking refrigerant oil in "new" air conditioning compressor

Work steps for blocked/seized up air conditioning compressor

1. Remove desiccator. => 875519 Removing and installing desiccator - section on "Removing"
2. Check the connections at both condensers, at the desiccator and at the refrigerant lines for the desiccator for any wear/chips.

If there is wear/chips:
3. Unscrew the refrigerant line between the compressor and condenser at the connection points on the compressor and on the condenser and disconnect it. => 874319 Removing and installing compressor-condenser line - section on "Removing"

WARNING

Acetone is a highly inflammable, irritating and combustible fluid.

- Highly inflammable.
- Irritates the eyes.
- Repeated contact can cause chapped and cracked skin.
- Vapours can cause drowsiness and dopiness.

-> Store containers in a well-ventilated place.
-> Keep clear of ignition sources - do not smoke.
-> In the event of contact with eyes, wash thoroughly with water and consult a doctor.
-> Safety and protective measures can be found in the data sheet for acetone.

4. Rinse out the refrigerant line between the compressor and condenser using commercially available acetone, for example. The acetone dissolves the refrigerant oil ND 8 in the air-conditioning line.
A suction and pressure syringe can be used to rinse out the refrigerant line.
Suction and pressure syringe Nr.194
4.1. Allow the acetone in the refrigerant line to dry off.

WARNING

Working with compressed air

- Risk of eye injuries
- Risk of damaging and dirtying components

-> Wear protective goggles with side eye protection.
-> Protect the point at which the compressed air emerges with suitable material.
-> Place the point at which the compressed air emerges on suitable surfaces.

5. Wrap a light-coloured material several times around the refrigerant line connection for the condenser and secure the material on the line with a tie-wrap. Make sure that the compressed air can escape through the cloth. Any wear fragments must remain in the cloth.
6. Blow pure compressed air (no oil or water impurities permitted) through the refrigerant line between the compressor and condenser.
7. Replace both condensers and the desiccator. => 875019 Removing and installing condenser;-=> 875519 Removing and installing desiccator - section on "Removing"
8. Reinstall the refrigerant line between the compressor and condenser at the compressor and at the condenser. => 874319 Removing and installing compressor-condenser line - section on "Installing"
9. Replace air conditioning compressor. => 873419 Removing and installing air conditioning compressor - section on "Installing"

If there is no wear/chips:
10. Replace the desiccator. => 875519 Removing and installing desiccator
11. Replace air conditioning compressor. => 873419 Removing and installing air conditioning compressor - section on "Installing"