Volkswagen Touran Service Manual: Leaking or Damaged Components except A/C Compressor, Reservoir or
Receiver/Dryer
Empty Refrigerant Circuit
| |
Remove malfunctioning component. |
| |
Remove the A/C compressor. |
| |
Remove oil drain plug from A/C compressor. |
 Note
| To speed up refrigerant oil drainage, turn A/C compressor by
hand via ribbed belt or magnetic clutch plate. |
| Pour the used refrigerator oil out of the A/C compressor. |
| Then fill the A/C compressor with quantity of fresh
refrigerant oil corresponding to quantity of refrigerant oil in
original part compressor. Refer to
→ Rep. Gr.87. |
| Use different refrigerant oils and quantities for the
various compressors. Refer to
→ Rep. Gr.87. |
| To ensure the compressor is lubricated at start-up, at least
80 cm3 of refrigerant oil must be
poured into the compressor. The remainder can be added to the
new reservoir or receiver/dryer. Refer to
→ Rep. Gr.87. |
| If dirt has penetrated into the compressor with the
refrigerant circuit open (for example after an accident),
compressor is to be replaced. |
| Flush the refrigerant circuit with compressed air and remove
moisture with nitrogen. Refer to
→ Chapter "Refrigerant Circuit, Flushing with Compressed Air and
Nitrogen". |
| |
Replace receiver/dryer or accumulator and restrictor. |
| |
Assemble, evacuate and recharge refrigerant circuit. |
|
|
|
Refrigerant Still in Circuit
| |
Discharge the refrigerant circuit. |
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Remove malfunctioning component, flush with compressed air,
collect escaping refrigerant oil. |
| |
The new component is to be filled with the amount of
refrigerant oil flushed out (plus 20 cm3
for evaporator, plus 10 cm3 for
condenser, refrigerant pipes and refrigerant hoses) as fresh
refrigerant oil fill. |
| |
Replace the restrictor depending on the vehicle. |
| |
Assemble, evacuate and charge the refrigerant circuit. |
|
|
|
All components of the refrigerant circuit submitted for
quality observation are always to be sealed (use original
sealing caps of original part).
...
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