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Flushing AC compressor

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
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1990 - 1998 960
1997 - 1998 V90/S90

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Jnsul
Posts: 3
Joined: 28 August 2009
Year and Model: S-90 1997
Location: Bethesda, MD

Flushing AC compressor

Post by Jnsul »

I should have asked this on my original post. How do you flush the compressor on a !997 S-90? its a ZEXEL Using 100 Pag and R-134A. Thanks

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

The compressor doesn't get flushed, nor do the accumulator, condenser, receiver drier and evaporator. Flushing should be done on the lines only and they must be disconnected from the items above before starting.

Some experts recommend that the compressor should be removed from the vehicle and the oil drained from it. Pour new refrigerant oil into the suction port and turn the compressor hub by hand thereby pumping clean oil through the compressor. Compressors don't compress liquids so make sure you rotate the compressor hub by hand enough to ensure you don't foul the compressor with the oil.

Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

Jnsul
Posts: 3
Joined: 28 August 2009
Year and Model: S-90 1997
Location: Bethesda, MD

Post by Jnsul »

Again Thanks for the info.I'll follow your advice and only put the required amount into the compressor. Plate on compressor calls for 6.8 oz. I'll let you all know the outcome.

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