Distribution block:1. Distribution unit. 2. Fan assembly. 3. Lower cabin filter. 4. Cabin filter cover. 5. Mixing valve drive cable. 6. Air flow distribution flap drive cable. 7. Heater resistor. 8. Clamp the heater core pipeline. 9. Clamp the heater core pipeline. 10. Heater core piping. 11. Heater core. 12. Recirculation flap drive cable. 13. Modular fan speed variator. 14. Heater core pipeline.
Removal and installation the distribution block
Removal the distribution block
1. Disconnect the negative battery terminal.
Attention:
- To prevent atmospheric moisture from entering the air conditioning system circuit, it is necessary to immediately plug any openings in the air conditioning system components. Fuel line plugs can be used for this purpose (catalog numbers 7 701 208 229 or 7 701 476 857). The plugs must be clean. Do not use plugs that have already been used to plug fuel lines.
- To avoid refrigerant leaks, be careful not to damage (do not deform, twist, etc.) pipelines.
2. Disconnect the connecting pipes from the expansion valve.
3. Move the expansion valve connecting pipes to the side.
4. Seal the openings of the connecting pipes and the expansion valve with plugs.
5. Clamp the pipes with clamps (Ms. 583) (5).
6. Remove the clamps (6) of the heater hoses.
7. Disconnect the heater hoses.
8. Remove the instrument panel.
9. Remove the front air ducts.
10. Shine the steering column.
11. Disconnect the wiring from the holders (7), (8), (9) and (10).
12. Disconnect the connector (11).
13. Disconnect the distribution block connector.
14. Remove the front footwell air ducts.
15. Disconnect the connectors (12) from the control panel.
16. Disconnect the radiator fan connector.
17. Disconnect the heater resistor connector.
18. Disconnect the modular fan speed variator connector.
19. Using a special station, remove the refrigerant from the air conditioning system.
20. Remove the distribution block.
21. Remove the control panel, recirculation flap drive cable, air distribution flap drive cable, mixing flap drive cable, fan assembly, fan speed variator module, heater resistor, heater core lines, heater core, evaporator ring, evaporator sensor and expansion valve from the distribution block.
Installation of the distribution block
Attention:
- Remove the plugs from each component at the very last moment, just before installation. Also remove components from their packaging just before installation.
- To avoid leaks, ensure that all seals and pipe surfaces are in good condition, clean and free of cracks.
1. Clean the refrigerant line seals.
2. Install all components in the reverse order of removal.
3. Using a special station, fill the air conditioning system circuit with the required amount of refrigerant and compressor oil.
4. Fill and bleed the engine cooling system.
5. Check the tightness of the engine cooling system.
6. Check the tightness of the air conditioning system circuit.
7. Check the functionality of the air conditioning system.