Automotive Air Conditioning Information Forum (Archives)

Gilbert on Mon September 06, 2010 4:44 PM

Year: 1995
Make: Bentley
Model: Continental R
Engine Size: 6750
Refrigerant Type: R134a
Country of Origin: United Kingdom

Hi guys

My 1995 Continental R started smoking because of the melting rubber, attached to the driver of the AC clutch. The heat destroyed as well the dust seal of the pulley bearing.

The Bentley has a Sanden SD7 V16 type compressor (part no 1109)

Anybody knows what kind of bearing this has in order to find an applicable dust seal ?



cheers from Europe


Gilbert

ice-n-tropics on Mon September 06, 2010 5:36 PM

Gilbert,
If the bearing seal is a crispy critter, then the the shaft seal may have overheated enough to leak oil and refrigerant around the OD of the seal (not the shaft interface). It could be that the SD7V16 has abnormally high turning torque which caused the slipped belt in the first place.
If the dust seal fails the grease runs out, therefore the bearing is tough to reuse.
The SD7V16 has the same clutch pulley double row bearing as the SD7H15. 55 mm OD. The bearing on the prior Bentleys which used the SD510 is too big (62mm).
The #1109 is a common compressor on cheaper cars, where a replacement may be more resonably priced.
hotrodac

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Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy.
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Edited: Mon September 06, 2010 at 5:40 PM by ice-n-tropics

Gilbert on Mon September 06, 2010 11:55 PM

Thank you for the quick reply