VW Golf manuals

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.
   
Pungent smell
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.
   
Handling refrigerants
  WARNING Danger of freezing injuries. The refrigerant can emerge as liquid or as vapour. ...

First aid
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:

Leaks at shock absorbers
Shock absorbers are often replaced because of externally visible leakage. Inspections on the test rig and in the vehicle have shown that in the majority of cases this replacement is not justified. Slight loss of fluid (“sweating”) at ...

Assembly overview - long noise insulation
  Note The removal and installation procedures may have to be modified slightly depending on engine fitted. 1 -  Short noise insulation Removing –  Remove bolts -2-, -3- and -4-. –  Pull out ...

Removing and installing high-pressure pump
Removing Engine cold The fuel system is under high pressure.Risk of injury due to fuel which may spurt out.Release high pressure. → Chapter Risk of functional impairment due to soiling ...

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