Stuffed nose cone on AC compressor.

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Stuffed nose cone on AC compressor.

Postby sergei » Sat Mar 23, 2013 11:33 am

Car in question is Toyota Mark II GX90.
The pulley bearing has seized on AC compressor leading to catastrophic failure of AC clutch.

I acquired replacement clutch and bearing, only to find that nose cone of the compressor is stuffed (the part where circlip supposed to be is completely separated from nose cone, nose cone is worn itself).

The whole thing is a molten mess of copper and plastic.....
I am cleaning up the pulley, but the matter of nose cone, I don't know what to do about it....
I do not want to remove the nose cone myself, as I am pretty sure it involves draining the refrigerant.

Is there anyone here on board who does AC?

I got the parts from autoair.co.nz for reasonable cost, and I pretty sure they do nose cones as well (and probably O ring for it)....
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Postby RunningRich » Sat Mar 23, 2013 1:41 pm

Did you mean that the parallel aluminium pit that sticks out of the front cover is worn? If so the front cover needs replacing, which means that the pump will need disassembly.

Bin it.

Assuming that it is a nippon denso pump they are common as muck. Find a car at pickapart (which is still gassed) from the same era with the same pump body. You can often swap the pulley between models, but there is some variation.

Replace the carbon seal and it should be good to go.

I have rebuilt a pump before (no replacement available) but the rebuild kit alone was around $100.

Any Aircon place can empty the system and fill, but today that means R134a.
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Postby Lloyd » Sat Mar 23, 2013 1:53 pm

Ring around on regas prices too, the asking price varies a LOT.
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