Volkswagen Golf Service & Repair Manual: Welding and soldering on refrigeration systems
| Before welding and brazing on vehicles (in the vicinity of
the air conditioning system components), extract the refrigerant
and then purge the system by blowing through with compressed air
and using nitrogen. |
| The products of decomposition of refrigerants under heat are
not only poisonous but are strongly corrosive, so that pipework
and system parts could be attacked. This refers primarily to
hydrogen fluoride. |
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| A pungent odour indicates that the products of decomposition
mentioned above are already present. Breathing in these
substances must be avoided under all circumstances, or the
bronchial tubes, lungs and other organs could be injured. |
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WARNING
Danger of freezing injuries.
The refrigerant can emerge as liquid or as vapour.
...
In the event of contact with the eyes or mucous membranes,
wash immediately with copious running water and summon an eye
specialist.
In t ...
Other materials:
Increase in temperature due to insufficient tyre pressure
The graph shows the temperature development of a tyre at a
speed of 180 km/h.
A -
When specified tyre pressure is maintained, the temperature
will remain stable.
B -
Danger zone: When tyre ...
Checking fuel pressure, engine code CWVA
Special tools and workshop equipment required
Removal wedge -3409-
Pressure tester -VAS 6550-
Connector cable -VAS 6550/3-3-
Connector cable -VAS 6550/3-4-
Vehicle diagnostic tester
...
Assembly overview - drive shaft
1 -
Outer constant velocity joint
Renew only as complete unit
Removing
→ Fig..
Installing: drive onto shaft to stop using plastic hammer
Distribute grease evenly in joint
Ch ...
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Handling refrigerants
First aid