Note

• There are different designs and makes of heater and air conditioning unit. The individual components of the various heaters and air conditioning units are similar but not identical. The combined fitting of different makes of component is therefore not permissible .
• The following illustrations show a "Valeo" heater/air conditioning unit, distinguishing features with respect to other makes

Heater and air conditioning unit, flap control left side: Assembly overview

1. - Operating lever
   • For actuation of defrost and air distributor flap
2. - Air distribution flap servomotor

Heater and manually controlled air conditioner:

Air distribution flap servomotor - V428- with potentiometer for air distribution flap servomotor - G645-

• Removing and fitting

Automatically controlled air conditioner:

• Front air distribution flap servomotor - V426- with potentiometer for front air distribution flap servomotor - G642-
• Removing and fitting

3. - Bolt.
   • 2 off
   • 1 Nm
4. - Bolt.
   • 3 off
   • 1 Nm
5. - Bolt.
   • 2 off
   • 1 Nm
6. - Servomotor for temperature flap

Heater and manually controlled air conditioner:

• Temperature flap control motor - V68- with potentiometer for temperature flap control motor - G92-
• Removing and fitting

Automatically controlled air conditioner:

• Left temperature flap control motor - V158- with potentiometer for left temperature flap control motor - G220-
• Removing and fitting

7. - Operating lever
   • For warm air flap
8. - Heater and air conditioning unit
   • Many components of the heater and heater/air conditioning unit are identical
   • Different versions
   • The combined fitting of different makes of component is not permissible
   • The following illustrations show the heater from "Valeo"
   • Assembly overview
9. - Defroster and air distribution flap actuator
   • Removing and fitting

Heater and air conditioning unit, flap control right side: Assembly overview

1. - Heater and air conditioning unit
   • Assembly overview
2. - Operating lever
   • For defrost flap
3. - Bolt.
   • 2 off
   • 1 Nm
4. - Defroster flap servomotor - V107-
   • With potentiometer for defroster flap servomotor - G135- .
   • Only for automatically controlled air conditioner
   • Removing and fitting
5. - Right temperature flap servomotor - V159-
   • With potentiometer for right temperature flap servomotor - G221-
   • Only for automatically controlled air conditioner
   • Removing and fitting
6. - Bolt.
   • 2 off
   • 1 Nm
7. - Operating lever
   • For warm air flap

Heater and air conditioning unit, heat exchanger, auxiliary air heater element: Assembly overview

1. - Bolt.
   • 6 Nm
2. - Coolant pipe for heat exchanger
   • Removing and fitting
3. - Staple
   • Can also be replaced by a clamp in the course of service work
4. - Coolant pipe for heat exchanger
   • Removing and fitting
5. - O ring
   • Renewing.
6. - Cover
   • For heat exchanger
7. - Bolt.
   • 2 Nm
8. - Foam spacer
9. - Support plate
   • For coolant pipes
10. - Foam rubber
    • For insulation
    • Note the fitting position:
11. - Heater and air conditioning unit
    • Removing and fitting
    • Dismantling and assembling
12. - Heat exchanger
    • Removing and fitting
13. - Heating element for additional heater - Z35-
    • Removing and fitting
14. - Bolt.
    • 2 off
    • 2 Nm
15. - Electrical wire
    • Removing and fitting
16. - Negative wire
    • Nut, 9 Nm
17. - Bolt.
    • 3 off
    • 2 Nm
18. - Screw-type clip
19. - O-ring
    • Replace