Dismantling and assembling air distributor housing — AUDI

Dismantling and assembling air conditioner => Page
87-271
.

Notes:

From September 1998, production was gradually switched from type "1" air-conditioner design to type "2" => Page
87-156
.
As of model year 2002 version "3" air conditioners will be installed => Page
87-156
In vehicles from model year 2002 with compressor with regulating valve -N280 an evaporator vent temperature sender is also installed => Page
87-130
(the opening is sealed with a plug in vehicles without sender -G263).

Bolt
Clamp
Foam seal
For condensation drain

Bottom section of air distributor housing
With condensation drain
The lower section from version "2" onwards has been adapted to the modified evaporator.

Drip pan
For condensation from evaporator

Evaporator
With seal
From version "2" onwards, the evaporator is 32 mm narrower than on version "1".
From version "2" onwards, the evaporator can no longer be removed from the air distributor housing (the housing would have to be dismantled due to the modified attachment of the refrigerant pipes).

Bolt

Refrigerant pipes
With insulation
The refrigerant pipes from version "2" onwards have been adapted to the modified evaporator.
After assembly, wrap foam as insulation completely round the refrigerant pipes and evaporator connection flange.

Bracket
Bolt

O-ring seals
Renew
Note correct dimensions =>Page
87-27
Different diameter for

Type "1"
2 x 13.4 mm; 2.4 mm
From version "2" onwards
1 x 13.4 mm; 2.4 mm
1 x 10.8 mm; 2.4 mm

=> Parts List

Central flap positioning motor -V70
With potentiometer -G112
Removing and installing =>Page
87-135
.

Bolt
Right temperature flap positioning motor -V159
With potentiometer -G221
Removing and installing =>Page
87-133
.

Defrost flap positioning motor
-V107
With potentiometer -G135
Removing and installing =>Page
87-132
.
The lever arm on the positioning motor is different in version "1" and versions "2" onwards.

Bolt
Bracket for positioning motor -V107

Air distributor housing
Do not dismantle further
On vehicles which do not have additional heater element -Z35, the opening for the additional heater element is closed off. On air distributor housings supplied as replacement parts, the opening is open; if used on vehicles which do not have the additional heater element, the opening must be closed off with a cap.
Version "1" and version "2" onwards differ with respect to the housing, the air flaps, the evaporator support and various other components.
Air is ducted to the intermediate piece for the defrost duct by means of two openings on version "1", from version "2" onwards these are combined into one opening.

The position of the central flaps is different; from version "2" onwards, both outer flaps remain open slightly at the top when the centre flap is closed (angle between the flaps is approx. 40 degrees), on version "1", all flaps are closed evenly.
Version "3" differs from version "2" in that it has an additional opening for installation of the evaporator vent temperature sender -G263 => Page
87-130
(in vehicles without sender -G263 the opening is sealed with a plug).

Coolant pipe
Return

Coolant pipe
Feed

Bracket for coolant pipes
Cover
From version "2" onwards with bracket for coolant pipes

Bracket for coolant pipes
Only present on type "1".

Left temperature flap positioning motor -V158
With potentiometer -G220
Removing and installing =>Page
87-133
.

Clip
Renew
Ensure it is seated properly

O-ring seals
Renew

Heat exchanger
Removing and installing => Page
87-148
.

Heater element for additional heater -Z35
Only envisaged for vehicles with diesel engine => Page
01-116
.
Function, removing and installing =>Page
87-146
.

Cover
Only on vehicles with no heater element for additional heater.
The cap is the same as the cap for the heater element for additional heater, except that the openings for the connectors are sealed air-tight.

Rubber bush