Dismantling and assembling air conditioner unit — AUDI

Dismantling and assembling air conditioner unit
Note
Before dismantling, remove heating system heat exchanger from air conditioner unit
Chapter
and unplug connector from
evaporator outflow temperature sender
G263
.
There are different versions of the heat exchanger and the corresponding coolant pipes. In Model Year 2006, the seal between the connections at the heat exchanger and the coolant pipes was gradually switched from an axial/radial seal
A
and
B
to a radial seal
D
and
E
. On replacing the heat exchanger, pay attention to the correct version
Electronic parts catalogue
and the correct installation position of the O-ring
C
.
Instead of a screw-type clip, vehicles with a radial seal at the coolant pipes
B
to the heat exchanger may be fitted with a plastic clamp
A
Electronic parts catalogue
.
The air conditioner unit is only to be removed after draining the refrigerant circuit; if applicable, the vehicle is to be taken to a workshop equipped with the necessary tools where the work can be performed by appropriately qualified personnel
Air conditioner with refrigerant R134a
.
Removing and installing air conditioner unit
Chapter
Housing for evaporator and heat exchanger
Different versions for vehicles with and without
supplementary heater element
Z35
Electronic parts catalogue
Different versions for left-hand drive and right-hand drive vehicles
Electronic parts catalogue
Dismantling and assembling
Chapter
Air distributor housing
Different versions for vehicles with operating and display unit,
Climatronic control unit
J255
of
“Basic”
or
“Convenience”
type
Electronic parts catalogue
Different versions for vehicles with diesel engine (with
supplementary heater element
Z35
) and petrol engine and diesel engine with
“auxiliary heater”
as optional extra and no
supplementary heater element
Z35
Electronic parts catalogue
Removing and installing electrical components with housing in position
Chapter
Detaching electrical components and corresponding connecting elements from air distributor housing/re-attaching
Chapter
In Model Year 2008, the thread at the fastening points between the air distributor housing and the dash panel central tube is being gradually modified (discontinuation of the cast metal inserts, the bolts are screwed directly into the plastic). Pay attention to the correct version of the bolts on installation
Electronic parts catalogue
.
Air conditioner unit wiring harness
Mark the various connectors before unplugging to avoid interchange with identical connectors and control motors.
Different versions for vehicles with operating and display unit,
Climatronic control unit
J255
of
“Basic”
or
“Convenience”
type
Electronic parts catalogue
Different versions for left-hand drive and right-hand drive vehicles
Electronic parts catalogue
Note
The air conditioner unit wiring harness has various identical connectors which should be marked before unplugging to avoid interchange.
Clip
Bolt