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94 850 Turbo A/C, 110,000 miles 850 1995

posted by  TomL on  Thu Jul 29 16:33 CST 2004
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last visit: Sun Jul 25 18:24 CST 2010
[RELATED]

If your AC is cutting out in hot weather you probably need a new AC clutch or at least remove some of the shims to allow the face of the clutch to close up somewhat. Measure the gap in the clutch. If it is around 0.030"+ it will not engage when things heat up. It will engage when it is cool but when the clutch windings heat up the magnet gets weaker due to higher resistance of the wire. (Winding resistance increases from 3.5 ohms to 5.5 ohms) You can remove the clutch, remove some of the spacers on the shaft, and result in <0.020 gap. You might also bypass the over temp switch on the end of the compressor. I spent some time in HK so I know how important AC is there. If you are in traffic turn the temp control to max cold and the blower on high. If you don't allow the compressor clutch to disengage, it will continue to pump out the cold air.
I am trying to find a source for the clutch. It is a Zexel 506491-6961 664 and is made by Ogura Clutch Co. Ltd. I know of three 850's that I can install them on if I can buy them. Do you know of a source in Hong Kong?
If you do, Email me at TomL77@att.net
Tom
--
Tom 69-1800S, 72-1800ES, 96-850T






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