Compressor contamination

Tiny
RC.HAIGH
  • MEMBER
  • 2010 VOLKSWAGEN TDI
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 103,000 MILES
We have a 2010 VW Amarok it has blown three pulley's it has been suggested that the system may be contaminated with metal. Is it possible to check, flush, strip clean compressor etc? Or does whole system need to be replaced? Is there other after market compressor, dryer, etc, available? Work great then just blew the rubber out of pulley. Replace pulley and work fine. Three pulley's last 50,000 KM. Thanks
Tuesday, February 19th, 2019 AT 8:12 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,371 POSTS
Hi and thanks for using 2CarPros.

First, this model isn't available in the US, so my technical information is very limited. However, yes, the system can be flushed. And yes, if there is contamination in the system, it will do what you experienced.

First, on any vehicle I have ever repaired, the compressor and the accumulator can not be flushed.

The condenser, all lines, and the evaporator. If you are concerned with the accumulator, replace it.

Next, you will need a flush gun. I don't know where you are located, but often times a parts store will lend or rent one to you. Once you get the flush gun, purchase an AC flush solvent. At that point, you will need to fill the condenser, all lines and the evaporator will need opened up. Using a rubber hose as a fill and drain, fill the condenser with the solvent. Wait a couple minutes, and then using the flush gun, empty the condenser, blowing out all debris and solvent. Do the same with the remaining serviceable components.

The air gun provides basically compressed air to evacuate the solvent.

Again, the compressor and accumulator are not serviceable, so they will need replaced. Also, AC flush solvent is available at any parts store.

If you have other questions, let me know. And again, if the system was contaminated originally, all you are doing is forcing the dirt and debris into the compressor and causing it to lock up. Thus, the clutch comes apart.

As far as aftermarket components, I am not familiar enough with this vehicle to answer that, but I suspect parts would be available.

Take care,
Joe
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Tuesday, February 19th, 2019 AT 7:11 PM

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