Procedures

64 51 001 Cleaning Evaporator

Special tools required:







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.







NOTE:
For information on cleaning agent and rinsing again, refer to Service Information.
For information on spraying equipment, refer to Service Information Special Tools and Equipment.







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

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







Necessary preliminary tasks:
- Remove rear underbody protection
- Move steering column in "top" and "extended" position.
- Remove evaporator temperature sensor







NOTE: Direction arrows on special tool 64 1 300 must point in direction of travel.

Insert guide lug (1) of special tool 64 1 300 into opening of evaporator temperature sensor.
Guide lug (1) must be firmly seated in opening of evaporator temperature sensor.







Connect special tool 64 1 300 to spray apparatus.
Move special tool 64 1 300 inwards.
Release clamping screw (2) and pull out guide wire (1) in order to position the folding spray element vertically.
Apply cleaning agent uniformly to evaporator by carefully moving special tool 64 1 300 back and forth.







NOTE: For purposes of clarity, the cleaning procedure is shown on the removed heater/air conditioner.

Set up spray element (1) by pulling out guide wire and carefully move lance (2) back and forth.







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