64 51 002clean evaporator (automatic air conditioning)

Special tools required:

Warning!

When handling cleaning agent, observe following protective measures:

Wear protective rubber gloves and protective goggles.

If cleaning agent comes into contact with eyes or skin, wash immediately with lots of water.


Important!
To avoid dirtying vehicle interior:

  • Close all air vents.
  • Switch heating and air-conditioning unit to air recirculation function.
  • Cover carpet in working area.
Recycling:
Carry out the cleaning operation in a suitable washing bay as the emerging cleaning agent escapes through the drain openings in the transmission tunnel.

Note:

For more notes on cleaning agent, refer to Service Information.

For more notes on spray pistol, refer to Service Information Special Tools/Equipment.


Note:

Ensure that the cleaning agent can flow away freely at the drain openings. If necessary, remove rear underbody protection.


Remove left side carpet.

Repeat repair only:

Remove sealing cap (1) from bore hole in housing of heating and air-conditioning unit (2).


Installation note:
Replace sealing cap.
First repair only:
Important!

To prevent swarf from gathering in housing of heating and air-conditioning unit:

Carry out drilling of each bore hole at a very low speed.

Pull out switched off drill together with swarf carefully out of bore holes.


Position drilling template 64 1 452 on housing of heating and air-conditioning unit (1) as illustrated and pre-drill with ∅ 6-mm drill.

Remove drilling template 64 1 452 . Drill out bore hole to ∅ 20 mm with quick-helix drill 64 1 453 .

Installation note:

Close off bore hole with sealing cap.


All:
Attach guide for spray lance 64 1 454 in bore hole in housing heating and air-conditioning unit (1) as illustrated.
Connect positioning device for spray lance 64 1 455 on guide for spray lance 64 1 454 as illustrated and secure with knurled nut (1).
Insert spray lance 64 1 451 in direction of arrow and secure with mounting for spray lance 64 1 456 .

Connect spray lance 64 1 451 to spray pistol.

Apply cleaning agent uniformly to evaporator by carefully moving spray lance 64 1 451 back and forth.

For notes on cleaning agent and rinsing, refer to Service Information.

Note:

After completing cleaning, allow car to drip-dry for approx. 5 minutes.


Set heating and air-conditioning unit to footwell ventilation and fresh air mode. Open windows or doors.

Start the vehicle and run the heating and air conditioning unit at maximum blower output for approx. 5 minutes.

Note:

In order to eliminate the last remnants of cleaning agent, repeat this process shortly before handover to the customer.


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