OT: air compressor problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

phestus · 04-25-2004, 11:08 AM

It's not a chevy compressor, but...Came out to the shop this morning and my compressor is on, won't shut itself off, and oil is puking out from the overflow tube, lots of oil. It's a 10 hp 2 stage , but I'm not familiar with the in's and out's of these things, so I don't want to tear it apart if it don' t really need it..

Anyone else with this kind of experience? Any ideas?

hgs_notes · 04-25-2004, 11:32 AM

Sounds like the pressure switch failed on. Its usually mounted on the air tank and the wires for the motor come from through it. Best bet is to just replace it rather than try to clean or repair ir. The oil is coming out because its hot and expanding. Depending on how long the compressor has been running will determine if the pump is shot. Its quite possible the rings are fried and the oil was being pushed out by air leaking into the crank case, but its also possible the air was leaking by because of the increased pressure of the pump.

Good luck.

HG

04-25-2004, 11:08 AM	#1
phestus Registered User Join Date: Feb 2004 Location: In a snowdrift in Manitoba Posts: 39	OT: air compressor problem It's not a chevy compressor, but...Came out to the shop this morning and my compressor is on, won't shut itself off, and oil is puking out from the overflow tube, lots of oil. It's a 10 hp 2 stage , but I'm not familiar with the in's and out's of these things, so I don't want to tear it apart if it don' t really need it.. Anyone else with this kind of experience? Any ideas? __________________ '70 C-10, mostly rust n' dust '74 BMW R90/6 "The quickest way to get yourself out of a hole, is to stop digging..."

04-25-2004, 11:32 AM	#2
hgs_notes GEARHEAD Join Date: Aug 2003 Location: MN Posts: 6,126	Sounds like the pressure switch failed on. Its usually mounted on the air tank and the wires for the motor come from through it. Best bet is to just replace it rather than try to clean or repair ir. The oil is coming out because its hot and expanding. Depending on how long the compressor has been running will determine if the pump is shot. Its quite possible the rings are fried and the oil was being pushed out by air leaking into the crank case, but its also possible the air was leaking by because of the increased pressure of the pump. Good luck. HG __________________ If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 Long Fleet C/10 72 Jimmy 4x4 (Junkyard Jimmy) HG's Plow Truck '78 K35 Dually Bigass Farm Truck HG's thread of miscellaneous stuff

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