Volkswagen Polo Service & Repair Manual: 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. |
| The doors reach their end position. |
| Evaporator and heater not drawing in secondary air (at
maximum fresh-air blower speed). |
| With engine running and A/C system set to maximum cooling
output, pay attention to the following points: |
| The fresh air blower is running. |
| The coolant fan must be running or it must be switched on. |
| The recirculation/fresh air door must be in the
“recirculation” position. |
| Ambient temperature is greater than 15
0C. |
| The A/C Evaporator Temperature Switch -E33- is installed
correctly and its switch temperatures are correct. |
|
|
|
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Turn off the ignition.
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Connect pressure gauge battery (A/C service station).
–
Take pr ...
Other materials:
Refrigerant R134a Environmental Information
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as refrigerant.
The refrigerant employed is tetrafluoroethane R134a, which
bo ...
Opening and closing the bonnet
Fig. 134 A: release lever in the footwell
on the driver side. B: release lever on the bonnet
Fig. 135 C: holder for the bonnet stay
in the lock carrier. D: bonnet secured with the bonnet stay
First read and observe the introductory information
and safety warningsOpening the bonnet
Ensu ...
Rolling Resistance Tires
Tire deformation when rolling causes the vehicle to loose
energy that makes the rolling resistance noticeable.
Deformation is significantly lowered on rolling resistance
tires due to new construction and low-wear surface mixtures.
...
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