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Where's the AC oil? S90-V90

uid 19's pic
posted by  jbowers on  Fri Feb 28 07:34 CST 2003
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last visit: Sun Jan 22 13:49 CST 2012
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I'm positive the factory 134 systems used "PAG" and that is what I used in mine when I rebuilt the system with a new compressor, expansion valve and dryer.

I guessed my compressor overloaded the clutch and broke the links due to low oil, because I found no oil in any part of the system when I took it apart. I think a lot of it leaked by the housing joints and seals in the original compressor as there was a "film" of stuff that was probably decomposed PAG all over the outside of the old compressor.

I added the recomemded oil quantity to the dryer and the compressor when I put it back together.

If I was David Hunter, I'd put a little PAG oil in the new dryer.

If you're really anal about doing it right, you need to remove the compressor and drain the oil so you know exactly how much to replace. (Getting the compressor out is a b$#@h!) I took the alternator off and still had to grind a clearance notch in my wrench handle to get a back bolt loosened.
--
'96 965 with 16' wheels at 100K. Had '85 745 Turbo Diesel for 200K.






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