Procedures

64 51 001 Cleaning evaporator

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.
Comply with notes and instructions on handling cleaning agents







NOTE:
For information on cleaning agent and rinsing again, refer to Service Information.
Refer to Service Information (bulletin) Spraying device for the heating and air conditioning system.







IMPORTANT:
To avoid dirtying vehicle interior:
- Close all air vents
- Heater - A/C system must be switched to air recirculation function
- 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.

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







Necessary preliminary tasks:
- Remove rear underbody protection
- Remove microfilter for passenger compartment ventilation







NOTE: Cleaning procedure must be performed in two steps with special tool 2 222 502.







Step 1:
Insert special tool 2 222 502 in the rear opening of the microfilter housing (1) at position (2) as shown.







Move special tool 2 222 502 from top to bottom (A) and right to left (B) to the limit position each time.
At the same time, press special tool 2 222 502 at position (1) in the direction of the arrow against the microfilter housing.
Spray approximately half of the cleaning agent. Then pull the special tool 2 222 502 out of the microfilter housing.







Step 2:
Insert special tool 2 222 502 in the rear opening of the microfilter housing (2) at position (1) as shown.







Move special tool 2 222 502 from top to bottom (A) and right to left (B) to the limit position each time.
At the same time, press special tool 2 222 502 at position (1) in the direction of the arrow against the microfilter housing.
Spray the remaining half of the cleaning agent. Then pull the special tool 2 222 502 out of the microfilter housing.







NOTE:
Set heating - A/C system to footwell ventilation and fresh-air mode. Open side windows/doors.
Start car and run heating - A/C system at max. blower output for approx. 5 minutes in order to dry evaporator.
In order to eliminate the last remnants of cleaning agent, repeat this process shortly before handover to the customer.