Volkswagen Golf Service & Repair Manual: Effects on metal
| In its pure state, refrigerant R134a is chemically stable
and does not attack iron or aluminium. |
| However, impurities such as chlorine compounds in the
refrigerant do attack certain metals and plastics. This can lead
to blockages, leaks and deposits on the air conditioner
compressor piston. |
|
|
|
| Critical temperature and critical
pressure |
| Up to a gas pressure of 39.5 bar positive pressure
(corresponding to a temperature of 101°C) the refrigerant R134a
remains chemically stable; however, above this temperature the
refrigerant decomposes (see Combustibility). |
|
In an enclosed container that is not completely full,
refrigerant evaporates as vapour at the surface in a quantity
sufficient to form an equilibrium between vapour a ...
Only very small amounts of water are soluble in liquid
refrigerant. On the other hand, refrigerant vapour and water
vapour mix in any proportion.
...
Other materials:
Removing and installing Denso heat exchanger, RHD vehicles
Special tools and workshop equipment
required
Drip tray for workshop hoist -VAS 6208-
Hose clamps up to 25 mm -3094-
...
Checklist
The following actions must always be carried out in the given order
in preparation for filling a tyre :
If you get a flat tyre, park your vehicle
on a firm and level surface at a safe distance from the flow of traffic.
Switch on the electronic parking brake
Braking, stopping and ...
Assembly overview - camshaft housing, engine codes CHPA, CMBA, CPVA, CXSA,
CZCA, CPVB, CZDA
1 -
Bolt
Specified torque and tightening sequence
→ Fig.
2 -
Inlet camshaft control valve 1 -N205-
Removing and installing
→ Chapter
3 -
Bolt
...
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Vapour pressure
Water content