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Hey guys!
I have an old 90 gallon craftsman oil less 2 cyl air compressor that no longer builds pressure. I can find the piston ring for the wafer piston that fits between the wafer and the connecting rod. The other cylinder has an actual piston with a ring groove.
From my research it seems this model may have been recalled years ago and the piston ring in discontinued. This has been a great compressor that I painted my 71 Vette with as well as did all my car maintenance for years. The motor still runs good so I do not want to replace it unless I have to.
The pump is a Devilbis and I think the piston ring is called a “scarf ring”? Any ideas who I could contact to see if something could be made to work? I’ve been told a hydraulic shop.
Any good tool forums I could post this question on?
If not already done so, call around to shops that offer compressor or pneumatic services to see if they can rebuild your pump or offer parts. In Tampa we have a handful of companies that offer service and parts. They also service refrigeration trucks etc. Lastly, post your question on Garagejournal.com. in the appropriate section. Good luck. Jerry
I would say that your probably out of luck on coming up with parts for that unit. I believe those would have been a "buy-out" product for D.V. and about the time it was discontinued, so went the spares.
Just any sealing ring just isn't going to do; as with the oil-less pumps great effort is made in the compatibility of metallurgy between the rubbing surfaces to avoid excessive familiarization in service; this often incorporating dry lubricants, such as graphite impregnation. But in my experience realize that "oil-less" pumps just are not going to last as long as those pumping/splashing a liquid lubricant.
If all else is good, I feel that perhaps one might look into just replacing the pump on the other existing componentry.
Air Compressor piston ring help?
