Volkswagen Golf Service & Repair Manual: Removing and installing refrigerant shut-off valve for high-voltage battery
heat exchanger -N542
– |
Observe safety precautions
→ Chapter „Safety precautions when handling refrigerants“. |
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Comply with notes
→ Chapter „Working on refrigerant circuit“. |
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Observe safety precautions when working in the vicinity of
high-voltage components
→ Chapter „Safety precautions when working in the vicinity of
high-voltage components“. |
– |
Observe the risk category of the high-voltage system
→ Rep. gr.00. |
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Drain refrigerant circuit. |
Risk of freezing injury caused by escaping pressurised refrigerant.There
is a risk of injury to the skin and parts of the body due to
freezing.Always wear safety gloves.Always wear safety goggles.Extract
refrigerant, and open the refrigerant circuit immediately afterwards.If
more than 10 minutes passed since the refrigerant has been extracted, do
not open the refrigerant circuit prior to extracting refrigerant anew.
Due to re-evaporation, pressure will be built up in the refrigerant
circuit. |
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Disconnect connector -A- from
-N542--B-. |
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Loosen union nuts -C-.
Counterhold on -N542--B- while
doing so. |
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Remove refrigerant line -D-
from heat exchanger for high-voltage battery
→ Chapter. |
|
|
|
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Remove shut-off valve -N542--D-. |
Installation is carried out in the reverse order. When
installing, note the following. |
Note
Adhere to the installation instruction for seals
-B-
→ Chapter. |
Following attachment, check the routing of the refrigerant
lines. They must be inserted in the holders provided and not
make contact with other components. |
– |
Renew seals -B-; for correct
version refer to
→ Electronic Parts Catalogue. |
|
|
|
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Check restrictor in refrigerant line
-D- (leading to heat exchanger for high-voltage battery)
for soiling
→ Chapter. |
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Screw on union nuts -C- to stop
by hand.
|
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Install refrigerant line -D- to
heat exchanger for high-voltage battery
→ Chapter. |
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Tighten union nuts -C-.
Counterhold on -N542--B- while
doing so, and make sure that refrigerant lines are routed free
of stress. |
Note
When tightening the union nuts, make sure that the
refrigerant lines remain free of stress. |
Following attachment, check the routing of the refrigerant
lines. They must be inserted in the holders provided and not
make contact with other components. |
Also refer to the notes on commissioning of air conditioning
system after filling
→ Air conditioning system with refrigerant R134a; Rep. gr.00. |
– |
Evacuate and charge refrigerant circuit
→ Air conditioner with refrigerant R134a; Rep. gr.00. |
– |
Read event memory of operating unit, Climatronic control
unit -J255-, and clear any faults which may have been stored
vehicle diagnostic tester in “Guided fault finding” mode. |
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Component |
Specified torque |
Union nuts
-C- |
16.5 Nm |
Removing
–
Observe safety precautions
→ Chapter „Safety precautions when handling refrigerants“.
...
Special tools and workshop equipment
required
Hose clamps, up to 25 mm -3094-
Engine bung set -VAS 6122-
...
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Assembly overview - airbag control unit
1 -
Airbag control unit -J234-
Removing and installing
→ Chapter
The control unit is earthed via the housing with the body
2 -
Nut
Nut and earth stud form the earth connection for the control unit
Threads must be ...
Wheel bolt caps
Fig. 221 Removing the wheel bolt caps
First read and observe the introductory information
and safety warnings
Take the wire hook from the vehicle toolkit.
Insert the hook through the opening in the cap and pull off in the direction
of the arrow.
The caps protect the wheel bolts a ...
Draining air conditioner service station
Note
If it becomes necessary to drain the air conditioner service
station (e.g. because contaminated refrigerant was extracted),
all filters and dryers are to be renewed as a rule. Do not take
the filters and dryers out of their airtight p ...
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