Cleaning Evaporator (Automatic Climate Control)

Cleaning Evaporator (Automatic Climate Control)

Special tools required:
- 64 1 451
- 64 1 452
- 64 1 453
- 64 1 454
- 64 1 455
- 64 1 456

WARNING:
When handling cleaning agent, observe following protection measures:
Wear protective rubber gloves and protective goggles.
If cleaning agent comes into contact with eyes or skin, wash immediately with lots of water.

CAUTION:
To avoid dirtying vehicle interior:
- Close all air vents.
- Switch air conditioner to recirculated air mode.
- Cover carpet in work 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 information on cleaning agent, refer to Service Information.
For further information on spray apparatus, refer to Special Tools/Equipment Service Information.

NOTE: Make sure the cleaning agent can escape freely from the drain openings. If necessary, remove rear underbody protection.

Remove side carpet on left.

Repeat repair only:







Remove sealing cap (1) from hole in A/C housing (2).

Installation:
Replace sealing cap.

First repair only:

CAUTION:
To avoid swarf in A/C housing:
Drill holes at very low drilling speeds.
Carefully withdraw switched off drill together with swarf from holes.







Place drilling template 64 1 452 as illustrated on A/C housing (1) and predrill with 6 mm dia. drill bit.
Remove drilling template 64 1 452 and drill out hole with center bit 64 1 453 to 20 mm dia.

Installation:
Seal hole with sealing cap.

All:







Attach guide for spray lance 64 1 454 as illustrated into hole in A/C housing (1).







Attach positioner for spray lance 64 1 455 as illustrated to guide for spray lance 64 1 454 and secure with knurled nut (1).







Insert spray lance 64 1 451 in direction of arrow and secure with fixture for spray lance 64 1 456.







Connect spray lance 64 1 451 to spray apparatus.
By moving spray lance 64 1 451 back and forth, spray a uniform amount of cleaning agent onto evaporator.
For information on cleaning agent and rinsing again, refer to Service Information.

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

Set heater - A/C to footwell ventilation and fresh air operation. Open windows/doors.
Start car and run heater - A/C at max. fan power for approx. 5 minutes in order to dry evaporator.

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