Volkswagen Golf Service & Repair Manual: Removing and installing coolant pipes at heat exchanger (Valeo)
 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
(distinguishing features
→ Chapter). The combined fitting of different makes
of component is therefore not permissible
→ Electronic Parts Catalogue. |
|
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| – |
Remove heater and air conditioner unit
→ Chapter. |
| – |
Detach the sealing collar -3-
to the plenum chamber bulkhead. |
| – |
Detach the coolant pipe holder -4-
to the left. |
| – |
Lift locking element -7- and
pull off clip -6-. |
| – |
Pull coolant pipe -5- off heat
exchanger. |
| – |
Remove screw-type clip -9- and
pull coolant pipe -10- off heat
exchanger. |
| – |
Detach the coolant pipes. |
|
|
|
| Installation is carried out in the reverse order. When
installing, note the following: |
| – |
Check connection -3- of the
heat exchanger and connection -2-
of the coolant pipes for damage or contamination. |
| – |
Clean and smoothen sealing surface for seals. |
| – |
Moisten new seals -4- with
coolant (or lubricate lightly with silicone grease) and fit them
to coolant pipe -1-. |
| – |
Push coolant pipes into heat exchanger as far as stop. |
Risk of malfunction on heat exchanger due to defective seals and
leaks.Never squeeze seals.Never cant coolant pipes.Slide on coolant
pipes completely. |
|
|
| – |
Fit a new clip -5- or
screw-type clip -2- onto coolant
pipe / heat exchanger joint. |
| – |
Check clip and screw-type clip for proper seating on
connections of heat exchanger and check coolant pipes. The
coolant pipes must not rest against air distribution housing or
any other components. |
| – |
Install heater and air conditioning unit
→ Chapter. |
| – |
Read event memory, and clear any entries displayed vehicle
diagnostic tester in “Guided fault finding” mode. |
| – |
As a final step, check operation of heater and air
conditioning system. |
| → Chapter „Assembly overview - heater and air conditioning unit“ |
|
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Special tools and workshop equipment
required
Drip tray for workshop hoist -VAS 6208-
& ...
Note
There are different designs and makes of heater and air
conditioning unit. The individual components of the various
heaters and air conditioning u ...
Other materials:
Checking outer constant velocity joint
The joint is to be dismantled to renew the grease if it is
heavily soiled, or to check the running surfaces of the balls
for wear and damage.
Removing
–
Before disman ...
Notes for vehicles with start-stop system
Observe the safety precautions for vehicles with a
start-stop system
→ Chapter.
If a start-stop system is installed, the following abort
conditions will deactivate the start-stop function:
The star ...
Safety precautions for working on vehicles with start-stop system
Risk of injury due to unexpected engine start
In vehicles with activated Start/Stop system, the engine may start
up unexpectedly. The status of the Start/Stop system is indicated by a
message in the dash panel insert.
–
Deactivate Start/Stop syste ...
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Removing and installing coolant pipes at heat exchanger (Denso)