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:
Composite Wheels
Composite wheels consist of various parts.
The primary components are rims and wheel discs. These
components are fastened to each other with special screws and a
special procedure. This ensures the wheel's function, proper
seal, safety a ...
Paint System for Plastic Parts
This universal painting system enables you to safely and
simply paint all plastic parts which can be usually found on the
exterior. (Plastic types: PP, EPDM, ABS, PC, PPO, PBTP, UP-GF,
PA, PVC, R-TPU, PUR) This technical reference material does not
apply ...
Brake fluid
Fig. 117 In the engine compartment: cap
on the brake fluid container
First read and observe the introductory information
and safety warnings Brake fluid will gradually absorb water
from the surrounding air. The brake system will be damaged if there is too much
water in the brake fluid. T ...
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