Volkswagen Polo Service & Repair Manual: Refrigerant Circuit, Flushing
Note
For vehicles in which no adapters fit on to the refrigerant
pipes, for example, a blower pistol with rubber mouthpiece is to
be used to blow through individual components. Special care must
be taken not to damage the connections (crushing or scratching). |
Evaporator is to be flushed via the connection for
low-pressure pipe (large diameter) after removing expansion
valve or removing restrictor. |
Always flush components in direction opposite of refrigerant
flow direction.
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Check expansion valve and replace if dirty or corroded. |
If there are dark, sticky deposits in the components that
cannot be removed with compressed air, replace these components. |
Thin, light grey deposits on the insides of refrigerant
pipes do not impair the function of the components. |
After flushing, always replace receiver/dryer or reservoir
and restrictor. Replace dryer cartridge or dryer on condensers
with attached dryer. |
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In order to be able to force moisture and other contaminants
out of refrigerant circuit, compressed air and nitrogen (to
force moisture out of refrigerant circuit) ar ...
Other materials:
Notes on tow-starting
First read and observe the introductory
information and safety warnings
Vehicles should not be tow-started wherever possible. Use jump leads
to start the engine instead .
For technical reasons, the following vehicles cannot be
tow-started:
Vehicles with an automatic gearbox.
If ...
Adhesive Surface Pretreatment when Replacing Laser-Soldered Roofs
Dry sand the cataphoretic primer on the roof adhesive surface
-item 6-
→ Item down to the bare metal using P180 sandpaper.
–
Dry sand the roof pillar adhesive surface
...
Test Requirements
Radiator and condenser are clean (clean if necessary).
The ribbed belt for the A/C compressor and alternator
tensioned correctly.
All air ducts, covers and seals are OK and installed
correctly.
...
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