Thermostatic Air Cleaner: Testing and Inspection

1. Check security and tightness of:
- preheater plates
- preheater hose
- air filter housing





2. Check operation of damper in air filter housing
- Remove air filter housing.
- Undo air duct connections.
- Carefully withdraw housing from mountings.





3. Remove damper housing from air cleaner
- Remove housing screws (four) and lift out housing.





4. Check damper operation
Check:
- bushings and mountings
- spring
- thermostat (cool e.g. with cooling spray)

Damper position at different outside temperatures:
A = Less than +5 degrees C (preheated air only)
B = approx. +10 degrees C
C = +15 degrees C (cold air only)

Damper Housing Assembly:

5. Reassemble air filter housing
- Install damper housing.





6. Install air filter housing in car
- Position housing in mountings.
- Reconnect all air ducts.





7. Check mounting of front intake
- Look through grille and check mounting of front intake.
- If required loosen grille and secure front mounting of intake.

Check operation
- Run engine.