Volkswagen Polo Service & Repair Manual: A/C Compressor with A/C clutch
Caution
| Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
system. |
| Only use tools and materials approved by the
manufacturer. |
| The warranty is voided if non-approved tools or
materials are used. |
|
| All components of the refrigerant circuit submitted for
quality observation are always to be sealed (use original
sealing caps of original part). |
| Replace damaged or leaking components of refrigerant
circuit. Refer to
→ Chapter „Components, Replacing“. |
| To date, the original parts (compressor, reservoir,
receiver/dryer, evaporator and condenser) have been filled with
nitrogen gas. This charge is being gradually discontinued. There
is little or no pressure equalization when removing the sealing
plugs from the original part. |
|
|
|
| The engine drives the A/C compressor via a ribbed belt. |
| An electromagnetic clutch installed on the A/C compressor
creates a frictional connection between the ribbed belt pulley
and A/C compressor crankshaft when the air conditioning system
is switched on. |
| If the A/C compressor sticks, a fuse installed in the
compressor ribbed belt pulley releases the electromagnetic
clutch and protects the ribbed belt pulley from overload. |
| The A/C compressor extracts the refrigerant gas from the
evaporator, compresses it and relays it to the condenser. |
 Note
| The A/C compressor contains refrigerant oil, which can be
mixed with refrigerant R134a under any temperature. |
| The type plate lists the type of refrigerant required for
the A/C compressor. A regulator valve regulates pressure within
the specified range (control characteristics) on the low
pressure side. |
| So that the A/C compressor does not get damaged when the
refrigerant circuit is empty, the A/C clutch is turned off and
the A/C Compressor Regulator Valve -N280- is no longer activated
(A/C compressor runs at idle with engine). |
|
|
 |
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
sys ...
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
sys ...
Other materials:
Cross-Section of a Radial Ply Tire
1 -
Tread Block
2 -
Tread Groove
3 -
Tread
4 -
Nylon Ply
5 -
Belt Layers
Consists mostly of steel
6 -
Bead Bundle
...
Tires, Dismounting, Run-Flat Tires and Ultra High Performance Tires
Only trained personnel can perform the assembly work on
run-flat tires and ultra high performance tires.
If equipped check the tire pressure monitoring sensor with
the vehicle diagnostic tester and if necessary replace.
...
Rain/light sensor
Fig. 75 Windscreen wiper lever: setting
the rain/light sensor Ⓐ
Fig. 76 Sensitive surface of the rain/light
sensor
First read and observe the introductory information
and safety warnings
When the rain/light sensor is activated, it automatically controls the frequency
of the wiper inte ...
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Refrigerant Circuit Component Arrangement
A/C Compressor without Magnetic Clutch