Rear Fresh Air Blower V80 , Removing And Installing - Audi Q7 2007 Repair Manual

Audi Q7 2007 ➤
Heating, Ventilation and Air Conditioning - Edition 04.2013
– Insert the heater core -C- into the A/C unit.
– Connect the coolant hose -B- to coolant pipe to heater core
-C- (coolant hose -A- is not connected for the time being).
Note
Connect the coolant hoses on proper side, coolant hose -B- sup‐
ply from engine (via the pipes under the left fender) and coolant
hose -A- return to engine (via the pipes under the left fender).
Refer to
⇒ "6 Incorporation of the A/C System in Vehicle Coolant Circuit",
page 66 .
– Fill coolant into coolant expansion tank up to top marking. Re‐
fer to ⇒ Engine Mechanical; Rep. Gr. 19 ; Coolant System .
– Cover the area below the A/C unit, where any coolant flowing
out may reach, with absorbent paper (so that any coolant still
present will not flow on and into the A/C unit or on to floor mat).
– Place a container under connection -A- to heater core -C-.
– Open the Hose Clamps - Up To 25 mm - 3094- on coolant hose
-B- far enough that coolant can flow slowly into heater core (to
pre-bleed heater core).
Note
If coolant does not flow into heater core on its own, pressure
♦
can be built up in coolant expansion tank using hand pump of
Cooling System Tester - VAG1274- and thereby accelerate
the flow.
By pre-bleeding the cooling circuit, the bleeding of the cooling
♦
system at start-up becomes considerably easier after instal‐
lation. Refer to ⇒ "7 Coolant Circuit, Bleeding", page 78
– Wait until coolant exits from coolant hose connection -A- on
coolant pipe to heater core.
– Connect the coolant hose -A- at coolant pipe to heater core.
– Install the removed components again in reverse order.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
– Bleed the cooling circuit. Refer to
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
⇒ "7 Coolant Circuit, Bleeding", page 78
with respect to the correctness of information in this document. Copyright by AUDI AG.
chanical; Rep. Gr. 19 ; Coolant System .
9.41 Rear Fresh Air Blower - V80- , Remov‐
ing and Installing
Caution
Do not grasp fan wheel of Rear Fresh Air Blower - V80- , force
against the fan wheel or shifting the balancing weights fas‐
tened to fan wheel may cause imbalance and then problems
during operation.
Removing
– Switch off ignition.
184
Rep. Gr.87 - Air Conditioning
.
and ⇒ Engine Me‐